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Perseid meteor shower kicks off! Fireballs detected this weekend
Earth has just entered the stream of debris left behind by Comet Swift-Tuttle, the parent comet of the Perseids. Now is the time to start watching for meteors.
July 27, 2014
Can we find aliens by looking for their pollution?
Maybe some extra-terrestrials pollute their planets too.
July 25, 2014
Beauty! Best photos of July 24 moon and Venus
The sky's two brightest nighttime objects, in the east before dawn this morning.
July 25, 2014
Video: Joshua Tree nights
Shot in Joshua Tree National Park in California. Relax ... and enjoy the night sky.
July 25, 2014
Will the Andromeda galaxy someday collide with our Milky Way?
The Andromeda galaxy is approaching our Milky Way galaxy across the vastness of space. When will they collide?
July 23, 2014
Camelopardalids: Just a few centuries late in catching a good show
Remember the Camelopardalids, the meteor shower earlier this year astronomers said would be spectacular ... except it wasn't? Now, the same astronomers explain why.
July 22, 2014
Does Earth have a second moon?
Mars has two moons, Jupiter has 67, Saturn 62, Uranus 27, Neptune 14. But our planet Earth has just one moon. Doesn't it?
July 22, 2014
Transiting exoplanet with longest year yet
Most distant planets known so far orbit close to their stars and thus have a short "year." Kepler-421b has a year about twice as long as Earth's.
July 21, 2014
Is our universe a bubble?
The multiverse hypothesis - the idea that there are other universes - can be tested, scientists say.
July 18, 2014
Mars Curiosity rover now crossing dangerous terrain
The car-sized rover is currently crossing a stretch of hard, rocky ground like that which previously dented and punctured its aluminum wheels.
July 17, 2014
