The Most Powerful Space Telescope in History Will Study the Solar System's Watery Moons
Are Those Really Alien Megastructures? How Astronomers Plan To Investigate
This Incredible 1.5-Billion-Pixel Image Is the Biggest Hubble Picture Ever
This Incredible Image Is the Biggest Hubble Picture Ever
A Flickering Exoplanet Could Point to Cometary Collisions
Comets rain down on a young, rocky world in this artist's impression of the Late Heavy Bombardment, a theorized period of intense impact activity on Earth approximately four billion years ago.
How Scientists Hunt for the Universe's Missing History
The time when the first galaxies formed is an astronomical mystery.
The Asteroid Threat, Visualized. It's not a question of if a large asteroid will strike the Earth again. It's a question of when.
The Veil Nebula Looks Like a Radiant Space Ribbon
Veil Nebula Supernova Remnant NASA’s Hubble Space Telescope has unveiled in stunning detail a small section of the expanding remains of a massive star that exploded about years ago. Called the Veil Nebula, the debris is one of the best-known superno
Einstein Cross (Nici's Chatter Box)
Astronomers See the Same Supernova Explode for 40 Years
Europe Will Put 26 Telescopes on One Satellite to Hunt for Earth-Like Planets
The European Space Agency is looking for an Earth twin.