Maybe some extra-terrestrials pollute their planets too.
In the N. Hemisphere, the annual August Perseid meteor shower ranks as the year’s favorite shower. A big, bright supermoon interferes in 2014. So start observing the Perseids soon!
The sky’s two brightest nighttime objects, in the east before dawn this morning.
The Andromeda galaxy is approaching our Milky Way galaxy across the vastness of space. When will they collide?
Remember the Camelopardalids, the meteor shower earlier this year astronomers said would be spectacular … except it wasn’t? Now, the same astronomers explain why.
This is exciting! The first-ever rendezvous/landing on a comet. What to expect in the coming weeks as Rosetta draws alongside Comet 67P/Churyumov–Gerasimenko.
Mars has two moons, Jupiter has 67, Saturn 62, Uranus 27, Neptune 14. But our planet Earth has just one moon. Doesn’t it?
The longest lunar month of 2014 will start August 25 and end September 24. All you need to know about the varying lengths of the lunar months, here.
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.
Twilight is the time of day between daylight and darkness. Astronomers, the experts on nighttime, recognize three kinds of twilight.
Today is the 45th anniversary of humanity’s historic first steps on the moon. “One small step for [a] man, one giant leap for mankind.” The story in pictures.
On July 19, 2013, the Cassini spacecraft acquired a distant image of our home world, as we Earth citizens cast our thoughts spaceward.
The multiverse hypothesis – the idea that there are other universes – can be tested, scientists say.
It’s time for what we in the N. Hemisphere consider our best time of year to watch meteors. Learn when and where to catch shooting stars!
The car-sized rover is currently crossing a stretch of hard, rocky ground like that which previously dented and punctured its aluminum wheels.
On July 17, 1975, a famous first handshake between nations in space.
Next generation, in this case, is defined as experiments that will be at least 10 times as sensitive as the current crop of dark matter detectors.
What if we’d had Twitter on July 16, 1969, the day Apollo 11 launched carrying the first humans to the moon? NASA did a live-tweet reenactment today as if we had.
USGS released this cool geologic map of Mars this week, which was prepared for NASA. What to see first? Notice impact craters, in yellow.
Auroras are awesome to see from here on Earth. Check out the view from space! Vine posted by ISS astronaut Reid Wiseman.