An astrophotographer spotted a beautifully-formed solar prominence that looks like a giant version of the famous Parisian landmark.
Astronomers have announced the discovery of a truly monstrous structure consisting of a ring of galaxies around 5 billion light-years across — and it defies cosmological theory.
On Tuesday (June 16), NASA's Cassini mission had an EXTREMELY close encounter with one of Saturn's cratered moons, Dione.
On Wednesday, President Barack Obama mentioned something curious in a tweet — it was a message about the cosmos.
Astronomers studying the globular star clusters orbiting the giant elliptical galaxy Centaurus A (NGC 5128) have stumbled upon a fascinating discovery — the clusters are too massive.
By tracking the phases of six exoplanets, astronomers have tracked their daily weather cycles for the first time.
Ever since NASA’s Dawn spacecraft arrived in the vicinity of dwarf planet Ceres, the world has been abuzz with theories as to what those mysterious white spots may be.
The International Space Station is about receive perhaps its most important upgrade to date: a microgravity espresso maker!
As the European Rosetta spacecraft continues to explore Comet 67P/Churyumov-Gerasimenko as it gradually gets closer to the sun, it's having to deal with some very inclement orbital weather.
It has long been assumed that the size of a supermassive black hole in a galaxy's core is intimately related to the number of stars that galaxy contains -- but it might not be that simple.
One of the least likely places you might think astronomers would learn about ancient supernovae is at the bottom of the ocean but scientists have done just that -- also dredging up a mystery.
After pointing the Allen Telescope Array at a newly-found exoplanet discovered by NASA's Kepler space telescope, SETI reports there is no transmitting alien civilization. But the search continues.
The Martian surface is covered with a diverse array of landscapes and features, but this is one of the weirdest: strange spider-like formations that cover the south polar region of Mars.
Just in time for the festive period, the Hubble Space Telescope has released a dazzling image of a globular star cluster filled with stellar glitter.
Last week's lunar eclipse wasn't just a show for Earthlings, NASA's MESSENGER mission was also watching from Mercury, 66 million miles away.