李炳慶

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Japanese Astronaut Koichi Wakata tweeted this amazing picture back down to Earth from the International Space Station: http://oak.ctx.ly/r/pc5p

The observation of unexpected chemicals in the planet-forming disk around a young star indicate that such disks may be more complicated than previously anticipated. Read more: http://oak.ctx.ly/r/pfqk

A Japanese astronaut created a microgravity, multicolored light show on the International Space Station in the name of art. http://oak.ctx.ly/r/pgx4

A powerful jet shooting from a supermassive black hole at the center of a distant galaxy shines in a newly released image and video tour. Check them out here: http://oak.ctx.ly/r/pgmy

Pretty much any asteroid that poses a threat to Earth can be blasted out of the heavens using a nuclear bomb, even with warning times of a week or less, say a team of scientists who have been developing the idea. Here's how: http://oak.ctx.ly/r/pn6b

If you wanted to pay a visit to #Mars, how long would it take? The answer depends on a number of things … http://oak.ctx.ly/r/pnsw

This image of the Cat's Eye Nebula is just one of the amazing finds of the Chandra X-Ray Observatory and Hubble Telescope. See more: http://oak.ctx.ly/r/prrn

Astronomers have found a mind-bogglingly large structure — so big it takes light 10 billion years to traverse — in a distant part of the universe. What is it? Find out here: http://oak.ctx.ly/r/ptgn

A European spacecraft scheduled to launch toward the sun in 2017 will be shielded by a paint once used in prehistoric cave art. http://oak.ctx.ly/r/pw34

The night sky is filled spectacular cosmic treasures, from the moon and other planets to distant stars and galaxies. See amazing pictures of the night sky as seen by veteran observers and amateur astronomers here: http://oak.ctx.ly/r/pxaf

Night sky photographer Miguel Clara snapped this stunning image of the Big Dipper over Spain's Canary Islands off the west coast of Africa. See how he did it: http://oak.ctx.ly/r/pzgj

A galaxy called MCG-03-04-014 dominates the center of this new Hubble Space Telescope image. More images: http://oak.ctx.ly/r/q3mw