NASA observes possible water geysers on Europa
The observation appears to confirm earlier sightings of water spewing from Jupiter's moon.
Hubble study helps explain the heyday of galaxy formation
Gas-heavy galaxies were creating plenty of stars billions of years ago.
Hubble discovers a new 'dark vortex' on Neptune
Just checking the weather on those outer planets.
Faintest known galaxy could shed light on the early universe
Scientists have discovered a very tiny galaxy from 13 billion years ago.
NASA finds 'super-Earth' with an atmosphere it can analyse
But don't expect to find life there.
Hubble shows some of the galaxy's biggest, brightest stars
Some are so intense that they'll go supernova within a few million years.
NASA installs the first mirror on the Hubble's replacement
When complete, the James Webb space telescope is expected to exceed the Hubble's power by an order of magnitude.
The majority of Earth-like planets haven't been born yet
Astronomers believe that the universe is simply too young for Earth-like planets to be common.
The Big Picture: A nebula with the grace of a butterfly
The Hubble Space Telescope team has captured a stunning snapshot of the Twin Jet Nebula's unique patterns.