The European mission has discovered that the water locked in Comet 67P/Churyumov-Gerasimenko doesn't match the water on Earth.
Dust gets everywhere, particularly around young stars. But when it comes to the presence of dust in their interplanetary environments, many mature sun-like stars are very house-proud. Continue reading →
'Raise shields!' may be a familiar defensive order given in the Star Trek Universe, but according to space scientists in our Universe, Planet Earth has its own built-in invisible shield that buffers 'killer electrons' from orbital altitudes.
If you step outside before dawn during the next week or so, you might be able to see bright meteors streaking through the sky.
Last week's lunar eclipse wasn't just a show for Earthlings, NASA's MESSENGER mission was also watching from 66 million miles away. Continue reading →
The moon's largest mare, called Oceanus Procellarum, was thought to have been formed by a massive impact crater, but gravitational data from a NASA mission suggests otherwise. Continue reading →
Exoplanet hunters have just made it easier to identify alien Venuses, in the hopes that doing so will lead to the discovery of more alien Earths.
On Sunday (Sept. 7), a house-sized interplanetary interloper will fly past Earth at a distance of only 20,000 miles -- that's one-tenth of the distance from the Earth to the moon. Continue reading →
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