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October 20, 2015

Asteroid Apophis to whiz past Earth tonight -- and return for more in 2036

A European space telescope has captured new images of the huge asteroid Apophis, revealing that the potentially hazardous object is actually bigger than previously thought.

October 20, 2015

Satellite spies asteroid Toutanis tumbling through space

A new video captures the giant asteroid 4179 Toutatis tumbling through space on its flyby of Earth earlier this week.

October 20, 2015

Astronomers find biggest black hole ever

Astronomers have discovered what may be the most massive black hole ever known in a small galaxy about 250 million light-years from Earth, scientists say.

October 20, 2015

Farthest-known galaxy in the universe found, scientists say

A new celestial wonder has stolen the title of most distant object ever seen in the universe, astronomers report.The new record holder is the galaxy MACS0647-JD, which is about 13.3 billion light-years away.

October 20, 2015

Navy returns NASA's Orion after test flight

NASA's new Orion spacecraft returned to dry land in Southern California after a test flight that ended with a plunge into the Pacific Ocean.

October 20, 2015

90,000 messages will be beamed to Mars Friday

Radio telescopes will beam tens of thousands of messages to Mars this Friday (Nov.

October 20, 2015

Megasunspot's solar outbursts surprise scientists

A humongous sunspot — the biggest one seen since 1990 — produced no aurora-causing events despite firing off 10 intense solar flares in less than two weeks last month, scientists say.

October 20, 2015

Galactic 'mega city' shows mysterious spots of star formation

A new photo of a huge galactic "mega city" under construction in the early universe shows star formation happening in unexpected places, scientists have found.

October 20, 2015

Second total lunar eclipse of year coming up Wednesday, North America gets prime viewing

If you missed April's total eclipse of the moon, now's your chance.

October 20, 2015

Jupiter's icy moon Europa: Best bet for alien life?

WASHINGTON — Jupiter's moon Europa doesn't look like a particularly inviting place for life to thrive; the icy satellite is nearly 500 million miles (800 million kilometers) from the sun, on average.