News tagged with asteroid

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Asteroid threat has Congress' attention

As if you don't have enough to worry about, consider the subject of a hearing last week on Capitol Hill: asteroids that may be headed toward Earth. The good news: NASA is tracking most of the largest asteroids ...

Apr 15, 2013
4.3 / 5 (8) 9

Retired star found with planets and debris disc

(Phys.org) —ESA's Herschel space observatory has provided the first images of a dust belt – produced by colliding comets or asteroids – orbiting a subgiant star known to host a planetary system. The ...

Apr 09, 2013
4.8 / 5 (6) 3 | with audio podcast

Researchers say a comet killed the dinosaurs

In a geological moment about 66 million years ago, something killed off almost all the dinosaurs and some 70 percent of all other species living on Earth. Only those dinosaurs related to birds appear to have ...

Apr 04, 2013
4.8 / 5 (16) 3 | with audio podcast

How big are galaxies?

I'm going to refrain from the initial response that comes to mind… actually, no I won't—they're really, really, really big!!!!

Apr 03, 2013
5 / 5 (4) 4

Collision course? A comet heads for Mars

Over the years, the spacefaring nations of Earth have sent dozens of probes and rovers to explore Mars. Today there are three active satellites circling the red planet while two rovers, Opportunity and Curiosity, ...

Mar 28, 2013
4.6 / 5 (13) 16 | with audio podcast