Tuesday, February 10, 2015

Bitcoin down 2% in quiet trade, further losses seen ahead


Investing.com - Bitcoin prices declined in subdued trade on Tuesday, with further losses seen ahead amid bearish chart signals.
Bitcoin (BTC/USD) fell to a session low of $215.00 on Slovenia-based BitStamp, the weakest level since February 6, before trading at $216.89 during U.S. morning hours, down $4.78, or 2.16%.
The price of a bitcoin on Bulgaria-based BTC-e slumped $7.06, or 3.19%, to trade at $214.09, while prices on Singapore-based itBit declined $3.71, or 1.69%, to trade at $215.76.
According to the CoinDesk Bitcoin Price Index, which averages prices from the major exchanges, prices of the crypto-currency shed $3.41, or 1.55%, to trade at $216.77.
Meanwhile, euro-denominated Bitcoin prices Bitcoin (BTC/EUR) dropped €2.84, or 1.46%, to trade at €191.88 on U.S.-based Kraken Exchange.
Elsewhere, yuan-denominated Bitcoin prices on Shanghai-based BTC China retreated 21.71 yuan, or 1.56%, to trade at 1,347.47 yuan, while prices on Beijing-based OKCoinsank 27.79 yuan, or 2.02%, to trade at 1,348.71 yuan.
Bitcoin is digital cash and is not backed by a government or central bank to regulate or issue it. It can be used to purchase goods and services from stores and online retailers.
Bitcoin’s market cap has been on a steady decline in recent months, even as the virtual currency has been getting more popular with merchants and retailers, including PayPal, Expedia, Overstock.com and Dell.


Monday, February 9, 2015

Crude oil hits session highs after bullish OPEC monthly report

Investing.com - Crude oil futures rose to the highest levels of the session on Monday, after the Organization of the Petroleum Exporting Countries cut forecasts for global oil-supply growth in 2015 as drillers in the U.S. pull back on new production in response to low prices.
In its monthly report released earlier in the day, OPEC lowered its 2015 estimate for non-OPEC supply growth by 420,000 barrels a day, led by a decline of 170,000 barrel a day in the U.S.
“The main factors for the lower growth prediction in 2015 are price expectations, a declining number of active rigs in North America, a decrease in drilling permits in the U.S. and a reduction in the 2015 spending plans of international oil companies,” OPEC said in the report.
OPEC also raised its forecast for demand for its own oil to 29.2 million barrels a day in 2015, up 400,000 barrels from a previous estimate.
On the New York Mercantile Exchange, crude oil for delivery in March rose by as much as 2.98%, or $1.59, to hit a session high of $53.28 a barrel, before trading at $52.55 during U.S. morning hours, up 85 cents, or 1.65%.
On Friday, New York-traded oil futures surged $1.21, or 2.4%, to end at $51.69 a barrel after industry research group Baker Hughes said that the number of rigs drilling for oil in the U.S. fell by another 87 in the past week to 1,136, the lowest since December 2011.
The number of oil rigs has declined in 14 of the last 17 weeks since hitting an all-time high of 1,609 in mid-October.
West Texas Intermediate oil futures are up nearly 18% over the past two weeks, but prices are still down almost 52% from a recent peak of $107.50 hit in June.
New York-traded oil futures climbed $4.10, or 7.15%, last week, the second straight weekly gain and the biggest advance since February 2011, amid indications U.S. producers may be pulling back on new production in response to low prices.
Elsewhere, on the ICE Futures Exchange in London, Brent oil for April delivery tacked on 52 cents, or 0.89%, to trade at $59.20 a barrel, after rising by as much as $1.22, or 2.03%, to touch a daily high of $59.90.
London-traded Brent jumped $1.17, or 2.03%, on Friday to settle at $58.68.
The April Brent contract rallied $6.00, or 9.08%, last week, also the second consecutive weekly advance and the biggest increase since 2011, as some investors bet that a bottom had been reached after a seven-month long rout.
London-traded Brent prices sky-rocketed 17% over the past two weeks, the largest two-week gain since 1998. However, prices are still down approximately 50% since June, when futures climbed near $116.
Oil prices have fallen sharply in recent months as OPEC resisted calls to cut output, while the U.S. pumped at the fastest pace in more than three decades, creating a glut in global supplies.

Friday, February 6, 2015

Strong U.S. job, wage gains open door to mid-year rate hike


WASHINGTON, Feb 6 (Reuters) - U.S. job growth rose solidly in January and wages rebounded strongly, a show of underlying strength in the economy that puts a mid-year interest rate increase from the Federal Reserve back on the table.
Nonfarm payrolls increased 257,000 last month, the Labor Department said on Friday. Data for November and December was revised to show a whopping 147,000 more jobs created than previously reported, bolstering views consumers will have enough muscle to carry the economy through rough seas.
At 423,000, November's payroll gains were the largest since May 2010, when employment was boosted by government hiring for the population count.
While the unemployment rate rose one-tenth of a percentage point to 5.7 percent, that was because the labor force increased, a sign of confidence in the jobs market.
January marked the 11th straight month of job gains above 200,000, the longest streak since 1994.
Economists polled by Reuters had forecast hiring increasing 234,000 last month and the unemployment rate holding steady at 5.6 percent.
The continued improvement in the labor market comes despite the economy slowing. Sputtering growth overseas and lower oil prices have weighed on exports and business investment.
Wages increased 12 cents last month after falling five cents in December. That took the year-on-year gain to 2.2 percent, the largest since August.
Interest rate hike expectations had been dialed back to September in the wake of December's surprise drop in wages.
The Fed last week ramped up its assessment of the labor market. Brisk job gains and the improvement in wages could harden expectations of a June policy tightening.
The pick-up in wages is likely to combine with lower oil prices to provide a massive tailwind for consumer spending and keep the economy growing at a fairly healthy clip, despite the global turmoil.
Growth braked to a 2.6 percent annual rate in the fourth quarter.
While several states put in place higher minimum wages last month, that likely had a minimal impact on wages. Economists say roughly three million workers may have been affected, accounting for just 3 percent of the private sector's more than 118 million employees.
The government revised payroll employment, hours and earnings figures dating back to 2010. The level of employment in March 2014 was 91,000 higher than previously estimated.
A new population estimate that will be used to adjust the figures from its household survey was also introduced. That survey is used to determine the number of unemployed and the size of the workforce.
Away from the firmer wages and job growth, the labor force participation rate, or the share of working-age Americans who are employed or at least looking for a job, rose two-tenths of percentage point to 62.9 percent, a sign of confidence in the jobs market.
A broad measure of joblessness that includes people who want to work but have given up searching and those working part-time because they cannot find full-time employment rose to 11.3 percent from 11.2 percent in December.
In January, private payrolls increased 267,000. November and December private employment was revised higher. Private payroll gains in November were the largest since September 1997.
Manufacturing added 22,000 jobs in January. Construction payrolls increased 39,000 after rising 44,000 in December.
Retail employment increased 45,900 after braking sharply in December. The only areas of weakness were government, where payrolls fell 10,000, and transportation employment which dropped 8,600, the first drop since last February.
Temporary help fell 4,100, the first drop in a year.


Tuesday, February 3, 2015

Oil jumps as dollar plunges, up nearly 20 percent in four days

By Barani Krishnan
NEW YORK (Reuters) - Oil prices rose on Tuesday, headed for the biggest four-day advance since January 2009 as a tumbling dollar sent commodities rallying.
Despite signs that U.S. crude supplies had registered another heavy build last week, investors were growing more confident that oil prices have hit a bottom after a seven-month rout. Traders said oil bulls were encouraged by BP's plan to cut capital expenditure by 13 percent to $20 billion in 2015, which came after reductions announced by other major energy companies.
Benchmark Brent crude oil was up $3.77 at $58.52 a barrel by 2:02 p.m. ET (1902 GMT).
U.S. crude , or WTI, rose $4.30 to $53.87.
Since last Wednesday's close, Brent and WTI have gained about $9 each, or roughly 19 percent. Until then, the market had tumbled with little pause week after week, after a selloff that began in June on fears of a global oversupply in crude.
The break higher came after news on Friday that the number of U.S. oil drilling rigs, measured by oil services firm Baker Hughes, had fallen their most in a week in nearly 30 years.
On Tuesday, the dollar dropped more than 1 percent against a basket of currencies (DXY), heading for its biggest daily drop since July 2013 and boosting the value of commodities priced in the currency. [USD/]
The capital reduction plans of BP and other energy firms fueled the perception that the global oil glut may end faster than thought.
"You've got a number of themes working to push the market higher," said Phil Flynn, analyst at Price Futures Group in Chicago.
Still, some traders remained pessimistic that the selloff was over, citing signs of another big weekly build in U.S. crude stockpiles.
U.S. commercial crude oil and gasoline stockpiles likely rose about 4 million barrels in the week ended Jan. 30, even as distillate inventories fell, a preliminary Reuters survey showed on Monday. The U.S. Energy Information Administration will release the inventory data on Wednesday. [EIA/S]
Adding pressure to crude, a U.S. refineries strike stretched into a third day after talks on a new national contract broke down.
"It needs to get worse here in terms of productive capacity actually going offline," said John Kilduff, partner at New York energy hedge fund Again Capital. "Also, the capex cuts announced by the respective oil firms are just plans that can be reversed when prices began a steady recovery, so the desired production cuts may not fully materialize."

Oil jumps as dollar plunges, up nearly 20 percent in four days

By Barani Krishnan
NEW YORK (Reuters) - Oil prices rose on Tuesday, headed for the biggest four-day advance since January 2009 as a tumbling dollar sent commodities rallying.
Despite signs that U.S. crude supplies had registered another heavy build last week, investors were growing more confident that oil prices have hit a bottom after a seven-month rout. Traders said oil bulls were encouraged by BP's plan to cut capital expenditure by 13 percent to $20 billion in 2015, which came after reductions announced by other major energy companies.
Benchmark Brent crude oil was up $3.77 at $58.52 a barrel by 2:02 p.m. ET (1902 GMT).
U.S. crude , or WTI, rose $4.30 to $53.87.
Since last Wednesday's close, Brent and WTI have gained about $9 each, or roughly 19 percent. Until then, the market had tumbled with little pause week after week, after a selloff that began in June on fears of a global oversupply in crude.
The break higher came after news on Friday that the number of U.S. oil drilling rigs, measured by oil services firm Baker Hughes, had fallen their most in a week in nearly 30 years.
On Tuesday, the dollar dropped more than 1 percent against a basket of currencies (DXY), heading for its biggest daily drop since July 2013 and boosting the value of commodities priced in the currency. [USD/]
The capital reduction plans of BP and other energy firms fueled the perception that the global oil glut may end faster than thought.
"You've got a number of themes working to push the market higher," said Phil Flynn, analyst at Price Futures Group in Chicago.
Still, some traders remained pessimistic that the selloff was over, citing signs of another big weekly build in U.S. crude stockpiles.
U.S. commercial crude oil and gasoline stockpiles likely rose about 4 million barrels in the week ended Jan. 30, even as distillate inventories fell, a preliminary Reuters survey showed on Monday. The U.S. Energy Information Administration will release the inventory data on Wednesday. [EIA/S]
Adding pressure to crude, a U.S. refineries strike stretched into a third day after talks on a new national contract broke down.
"It needs to get worse here in terms of productive capacity actually going offline," said John Kilduff, partner at New York energy hedge fund Again Capital. "Also, the capex cuts announced by the respective oil firms are just plans that can be reversed when prices began a steady recovery, so the desired production cuts may not fully materialize."

Forex - Aussie dollar down despite upbeat services readings, NZD a focus

Investing.com - The Aussie and New Zealand dollars eased after early morning data sets on Wednesday with investors focused on the scope for further rate cuts in both cases.

NZD/USD traded at 0.73451, down 0.23% after higher than expected unemployment data for the fourth quarter. AUD/USD traded at 0.7775, down 0.22%, following the unexpected rate cut to a record low 2.25% on Tuesday and USD/JPY changed hands at 117.69, up 0.08%.

New Zealand's fourth quarter unemployment rate ticked up to 5.7%, compared to expectations for a drop to 5.3% from 5.4% in the third quarter with the participation rate at a record high of 69.70%.

Then at 0930 local time (2230 GMT), RBNZ Governor Wheeler speaks on the outlook for the for NZ economy.

Given the RBNZ's surprise move to switch to an explicit neutral basis at the official cash rate review last week, the speech is being closely watched for the explanation.

Australia's AIGroup services index rose 2.4 points to 49.9, edging up to just shy of expansion territory.

In Japan, December preliminary wages data are due at 1030 (0130 GMT). In November the average wages per regular employee in Japan for November rose a nominal 0.1% for the ninth straight year-on-year rise but it was the smallest gain in the current gradual pickup that began in late 2013. A gain of 1.6% is expected.

At the same time, BOJ Deputy Governor Kikuo Iwata is due to speak to business leaders in Sendai City.
Iwata will hold a news conference in Sendai from 1400 to 1430 (0500 to 0530 GMT).

Over to China then where the HSBC services PMI is due at 0945 local time (0145 GMT). This doesn't tend to get the attention drawn by the manufacturing index, in part because it's been stable in recent months.

Overnight, the dollar pushed lower against the other major currencies on Tuesday, after disappointing U.S. factory orders data added to Monday's weak U.S. economic reports, dampening optimism over the strength of the country's recovery.

In a report, the U.S. Census Bureau said factory orders declined by 3.4% in December, worse than expectations for a decline of 2.2%. Factory orders fell by 1.7% in November, whose figure was revised from a previously reported decline of 0.7%.

Sentiment on the dollar remained vulnerable after data on Monday showed that U.S. consumer spending fell at the fastest rate since September 2009 in December, dropping 0.3% as households saved on cheaper gasoline prices.

Separate reports showed that U.S. construction spending rose less than expected in December, while manufacturing growth slowed.
The US dollar index was quoted at 93.85, up 0.09%.

Explosion heard in central Cairo: Reuters witness

CAIRO (Reuters) - An explosion was heard in central Cairo on Tuesday, a Reuters witness said.
The cause of the blast was not immediately clear. Islamist militants seeking to topple the government have carried out numerous bombings since the army toppled President Mohamed Mursi of the Muslim Brotherhood in 2013.

Monday, February 2, 2015

Gold remains lower after consumer spending data

nvesting.com - Gold remained in negative territory on Monday, despite data showing that U.S. personal spending declined for the first time in 20 months in December.
On the Comex division of the New York Mercantile Exchange, gold futures for April delivery shed $7.00, or 0.55%, to trade at $1,272.20 a troy ounce during U.S. morning hours. Prices held in a range between $1,271.30 and $1,283.90.
Futures were likely to find support at $1,252.10, the low from January 29, and resistance at $1,298.60, the high from January 27.
The Commerce Department said that personal spending fell 0.3% in December, worse than expectations for a decline of 0.2%.
Consumer spending is the single biggest source of U.S. economic growth, accounting for as much as two-thirds of economic activity.
The report also showed personal income rose 0.3% in December, above forecasts for 0.2%.
Meanwhile, the core PCE price index was flat in December, compared to expectations for a 0.1% gain. The core PCE price index rose at an annualized rate of 1.3% in December, in line with forecasts.
The Federal Reserve uses core PCE as a tool to help determine whether to raise or lower interest rates, with the aim of keeping inflation at a rate of 2% or below.
On Friday, gold rallied $23.30, or 1.86%, to settle at $1,279.20 after data showed the U.S. economy grew less than expected in the fourth quarter.

Gold prices ended January with a gain of $94.20, or 7.96%, as investors sought safety from volatility in global financial markets.
Also on the Comex, silver futures for March delivery declined 7.0 cents, or 0.41%, to trade at $17.13 a troy ounce. Silver rose 43.5 cents, or 2.59%, to end at $17.20 on Friday. Prices soared $1.47, or 10.31%, in January.
Elsewhere in metals trading, copper for March delivery tacked on 1.0 cent, or 0.41%, to trade at $2.505 a pound as investors shrugged of concerns over the health of China's economy.
Data released earlier showed that the final China HSBC Manufacturing Purchasing Managers' Index ticked down to 49.7 in January from a preliminary reading of 49.8. Analysts had expected the index to remain unchanged.
Over the weekend, government data showed that China's manufacturing purchasing managers' index slipped to a two-year low of 49.8 in January, below expectations for a reading of 50.2 and down from 50.1 in December.
The gauge contracted for the first time since September 2012, adding pressure on policymakers to stimulate a faltering economy.
The Asian nation is the world’s largest copper consumer, accounting for almost 40% of world consumption last year.
The red metal lost 33.1 cents, or 11.72%, in January as concerns over the global economic outlook and the impact on future demand prospects dampened the appeal of the commodity.

Saturday, January 31, 2015

U.S. regulators say 2.1 million vehicles recalled over air bag fault

(Reuters) - Some 2.1 million vehicles produced by Toyota Motor Corp, Fiat Chrysler Automobiles NV and Honda Motor Co are being recalled to fix a potentially defective chip that could cause air bags to deploy inadvertently, U.S. federal vehicle safety regulators said Saturday.
The vehicles were subject to three earlier recalls, but the National Highway Traffic Safety Administration said in a statement that "a small number of vehicles" fixed under those earlier actions had experienced inadvertent air bag deployments.

Friday, January 30, 2015

Forex - EUR/USD edges higher after string of data but gains capped

Investing.com - The euro edged higher against the U.S. dollar on Friday, after positive euro zone unemployment data and upbeat reports from France and Spain, although gains remained limited by concerns over Greece's future in the single currency bloc.
EUR/USD hit 1.13464 during European afternoon trade, the session high; the pair subsequently consolidated at 1.1339, adding 0.18%.
The pair was likely to find support at 1.1223, the high of January 27 and resistance at 1.1421, the high of January 27.
Eurostat reported that the euro zone’s unemployment rate ticked down to 11.4% in December from 11.5% the previous month, confounding expectations for the rate to remain unchanged.
In a separate report, Eurostat said that the annual rate of euro zone inflation fell by 0.6% in January, after a 0.2% slip in December. Economists had expected an annual decline of 0.5%.
Core inflation, which strips out volatile measures such as food and energy costs, rose 0.5% on a year-over-year basis, but was still well below the European Central Bank's target of close to, but just under 2%.
Earlier Friday, official data showed that French consumer spending increased by 1.5% in December, exceeding expectations for a 0.2% rise. November's figure was revised to a 0.2% gain from a previously estimated 0.4% advance.
Data also showed that Spanish gross domestic product rose 0.7% in the fourth quarter of 2014, above expectations for a 0.6% gain, up from a growth rate of 0.5% in the previous quarter.
A separate report showed that German retail sales gained 0.2% last month, disappointing expectations for a 0.3% rise. November's figure was revised to a 0.9% increase from a previously estimated 1.0% climb.
Sentiment on the euro remained vulnerable after Greece's new government moved Wednesday to roll back deeply unpopular austerity policies underpinning the county’s €240 billion international bailout, fuelling fears over a clash with its international creditors.
The euro was also higher against the pound, with EUR/GBP edging up 0.12% to 0.7521.
In the U.K., data showed that U.K. net lending to individuals fell to £2.2 billion in December from a revised £3.1 billion in November.
Data also showed that U.K. mortgage approvals rose by 60,280 last month after a downwardly revised 58,960 increase in November, compared to expectations for a 59,000 rise.
In addition, the U.K. Gfk consumer confidence index improved to 1 this month from minus 4 in December, compared to expectations for a reading of minus 2.
Later in the day, the U.S. was to release preliminary data on fourth quarter growth as well as reports on business activity in the Chicago region and revised data on consumer sentiment.

Thursday, January 29, 2015

U.S. pending home sales drop more than expected in December

WASHINGTON (Reuters) - Contracts to buy previously owned U.S. homes fell more than expected in December as tighter inventory and an increase in house prices discouraged buyers.
The National Association of Realtors said on Thursday its Pending Home Sales Index, based on contracts signed last month, decreased 3.7 percent to 100.7. The NAR also slightly revised down its index in November to 104.6.
These contracts usually become sales after a month or two. Economists polled by Reuters had forecast total pending home sales rising 0.5 percent in December from the previously reported level.
Contracts declined in the four main regions of the country.
U.S. pending home sales sputtered throughout 2014, but a strengthening economy, decline in mortgage rates and an easing in lending standards have renewed optimism for the coming months.
Compared to December of 2013, contracts were up 6.1 percent.

Wednesday, January 28, 2015

Dollar remains broadly higher, Fed statement ahead

Investing.com - The dollar remained broadly higher against the other major currencies on Wednesday, as investors eyed the outcome of Wednesday’s Federal Reserve meeting, with the bank expected to stick to its pledge to be patient on tightening monetary policy.
EUR/USD declined 0.46% to 1.1327, as sentiment on the euro remained vulnerable in the wake of a sweeping election victory for the anti-austerity Syriza party in Greece.
Markets were still jittery amid concerns over Syriza’s pledge to renegotiate the terms of Greece's €240 billion international bailout, which could cause the country to leave the euro zone.
Earlier Wednesday, the German research institute, Gfk said its Consumer Climate Index rose to 9.3 this month, above forecasts for 9.2 and up from a reading of 9.0 in December.
The pound was almost unchanged against the dollar, with GBP/USD at 1.5182, while USD/JPY held steady at 117.75.
Elsewhere, the Swiss franc regained ground against the euro, as it recovered from speculation on Tuesday that the Swiss National Bank was intervening in the market to weaken the currency.
EUR/CHF slid 0.32% to 1.0241 after rising as high as 1.0382 on Tuesday, while USD/CHF rose 0.13% to 0.9043.
In an interview on Tuesday, SNB Vice President Jean-Pierre Danthine said the bank was still "fundamentally prepared" to intervene in currency markets. "The minimum exchange rate couldn’t have been maintained anymore" with the European Central Bank’s bond purchasing program, he added.
The Australian and New Zealand dollars remained moderately higher, with AUD/USD up 0.25% to 0.7956 and NZD/USD was steady at 0.7455, holding just above Monday's three-year low of 0.7398.
The Australian Bureau of Statistics earlier reported that consumer price inflation rose 0.2% in the last quarter, below expectations for a 0.3% gain, after an increase of 0.5% in the three months to September.
Year-on-year, Australian CPI increased by 1.7% in the three months to December, compared to expectations for a 1.8% rise and down from a 2.3% gain in the third quarter of 2014.
The report also showed that Australia's trimmed mean consumer price inflation, which excludes the most volatile 30% of items, rose 0.7% in the fourth quarter of 2014, exceeding expectations for a 0.5% gain, after a 0.4% uptick in the previous quarter.
The Canadian dollar re-approached Tuesday's fresh six-year lows, with USD/CAD up 0.40% to 1.2446.
The U.S. dollar index, which measures the greenback’s strength against a trade-weighted basket of six major currencies, was up 0.35% at 94.59, not far from Friday’s more than 11-year highs of 95.77.


What Is a Black Hole?

What Is a Black Hole?
September 30, 2008
A swirling orange mass pulls matter from a blue star
An artist's drawing a black hole named Cygnus X-1. It formed when a large star caved in. This black hole pulls matter from blue star beside it.
Image Credit: 
NASA/CXC/M.Weiss
A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.

Because no light can get out, people can't see black holes. They are invisible. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently than other stars.

How Big Are Black Holes?
Black holes can be big or small. Scientists think the smallest black holes are as small as just one atom. These black holes are very tiny but have the mass of a large mountain. Mass is the amount of matter, or "stuff," in an object.

Another kind of black hole is called "stellar." Its mass can be up to 20 times more than the mass of the sun. There may be many, many stellar mass black holes in Earth's galaxy. Earth's galaxy is called the Milky Way.
The spiraled Milky Way galaxy
An artist's drawing shows the current view of the Milky Way galaxy. Scientific evidence shows that in the middle of the Milky Way is a supermassive black hole.
Image Credit: 
NASA/JPL-Caltech

The largest black holes are called "supermassive." These black holes have masses that are more than 1 million suns together. Scientists have found proof that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy is called Sagittarius A. It has a mass equal to about 4 million suns and would fit inside a very large ball that could hold a few million Earths.

How Do Black Holes Form?
Scientists think the smallest black holes formed when the universe began.

Stellar black holes are made when the center of a very big star falls in upon itself, or collapses. When this happens, it causes a supernova. A supernova is an exploding star that blasts part of the star into space.

Scientists think supermassive black holes were made at the same time as the galaxy they are in.
The center of the Milky Way galaxy
This image of the center of the Milky Way galaxy was taken by the Chandra X-ray Observatory.
Image Credit: 
NASA/CXC/MIT/F.K. Baganoff et al.

If Black Holes Are "Black," How Do Scientists Know They Are There?
A black hole can not be seen because strong gravity pulls all of the light into the middle of the black hole. But scientists can see how the strong gravity affects the stars and gas around the black hole. Scientists can study stars to find out if they are flying around, or orbiting, a black hole.

When a black hole and a star are close together, high-energy light is made. This kind of light can not be seen with human eyes. Scientists use satellites and telescopes in space to see the high-energy light.

Could a Black Hole Destroy Earth?
Black holes do not go around in space eating stars, moons and planets. Earth will not fall into a black hole because no black hole is close enough to the solar system for Earth to do that.
Even if a black hole the same mass as the sun were to take the place of the sun, Earth still would not fall in. The black hole would have the same gravity as the sun. Earth and the other planets would orbit the black hole as they orbit the sun now.
Supermassive black hole Sagittarius A* is located in the middle of the Milky Way galaxy
Sagittarius A* is the black hole at the center of the Milky Way galaxy.
Image Credit: 
X-ray: NASA/UMass/D.Wang et al., IR: NASA/STScI

The sun will never turn into a black hole. The sun is not a big enough star to make a black hole.

How Is NASA Studying Black Holes?
NASA is using satellites and telescopes that are traveling in space to learn more about black holes. These spacecraft help scientists answer questions about the universe.