91爆料

Doomsday December 15, 2016

NASA scientist warns Earth is due for 'extinction-level' event

A NASA scientist is warning that Earth is due for an 鈥渆xtinction-level鈥� event like a comet or asteroid strike 鈥� and claims there won鈥檛 be anything we can do to stop it.

Asteroids December 7, 2016

International Asteroid Day will be June 30, UN proclaims

Citizens of Earth, get out your calendars.

Asteroids December 5, 2016

6-foot-wide 'bald' asteroid is smallest ever studied

Astronomers have set a new record, taking the measure of a tiny space rock just 6 feet wide.

Asteroids November 8, 2016

Incoming! How NASA and FEMA would respond to an asteroid threat

It's a scary scenario: an asteroid headed for Earth, just four years away from slamming into our home planet.

Asteroids October 31, 2016

Giant metallic asteroid psyche may have water

The largest metallic asteroid in the solar system may have water on its surface, astronomers have found.聽

Asteroids October 14, 2016

A comet may have hit the Earth 56 million years ago, study says

Million of years in the past, a comet or an asteroid might have slammed into the Earth at an important time in its climatic history.

Asteroids October 12, 2016

Scientists study 'Death Star' to save Earth

Computerized modeling of Mars鈥� moon Phobos has a connection with keeping the Earth safe from asteroids, the Lawrence Livermore National Laboratory announced.

NASA September 9, 2016

NASA spacecraft on way to asteroid to bring back samples

The first NASA explorer of its kind took off on a seven-year quest Thursday, chasing after a big, black, unexplored asteroid to gather a few handfuls of gravel for return to Earth.

Asteroids September 8, 2016

A bus-size asteroid just gave Earth a close shave

An asteroid the size of a school bus buzzed by Earth Wednesday in an exceptionally close 鈥� but safe 鈥� flyby.

NASA September 8, 2016

NASA's asteroid-sampling mission is ready to launch Thursday

NASA's first-ever asteroid-sampling spacecraft is poised for an on-time liftoff Thursday evening, and mission team members said they can't wait.

Asteroids August 3, 2016

Comets go way back to Solar System's birth

Comets are pristine remnants left over from the solar system's formation 4.6 billion years ago, rather than younger fragments created by collisions between larger bodies, a new study suggests.