space

Science & Astronomy

Earth Day from Space: Satellite Snaps Far-Out Photo (Image)
 Satellite View of the Americas on Earth Day
April 22nd, 2014
A U.S. satellite has captured the ultimate Earth Day view from space, showing the entire planet in a stunning group shot of humanity. The photo, taken today (April 22) to mark Earth Day, was captured by the GOES-East satellite at 7:45 a.m. EDT (1145 GMT)
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NASA Earth Day Events Celebrate Our Home Planet: A Space Fan Guide
Blue Marble from Suomi NPP
April 22nd, 2014
Today marks the annual celebration of our home planet.NASA has a slew of live events planned to highlight what makes Earth so special. NASA also has many online activities available, too. Here's our NASA Earth Day guide.
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What Is Relativity? New Book Offers Simple Explanation
'What is Relativity' Book Cover
April 22nd, 2014
Why can't anything travel faster than the speed of light? Do black holes really suck? And why is the universe expanding? These are just a few of the questions author and astrophysicist Jeffrey Bennett answers in his new book, "What is Relativity?"
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Powerful Asteroids Strike Earth with Surprising Frequency (Video)
April 22nd, 2014
Since the start of the 21st century, dozens of incoming asteroids have slammed into Earth, some of them packing far more energy than a city-destroying atomic bomb, a new animation illustrates.
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Milky Way's Structure Mapped in Unprecedented Detail
Milky Way Over Old Windmill by Sean Parker
April 22nd, 2014
The Milky Way is a spiral galaxy — but what exactly does it look like? Does it have two, four, or more arms? Astronomers think that now they’re one step closer to the answer.
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Opportunity: The Amazing Self-Cleaning Mars Rover (Photos)
Mars Exploration Rover Opportunity in March 2014
April 21st, 2014
Opportunity has been given a new lease on life after the Red Planet gave the tenacious Mars rover a power-boosting spring clean, blasting dust off its solar panels. Opportunity is still going strong more than 10 years after landing on Mars.
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'What Is Relativity?' (2014): Book Excerpt
Black Hole Blasting out Energy
April 22nd, 2014
Many people with a basic knowledge of physics know that Einstein developed the theory of relativity, yet few people actually understand what it means. But author and astrophysicist Jeffrey Bennett relativity should be something anyone can understand.
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Most Americans Doubt Big Bang Theory: AP Poll
Big Bang Theory: Universe Timeline
April 21st, 2014
Most adults in the United States are not convinced that the universe began with the Big Bang, according to a new Associated Press-GfK poll.
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