For years, astronomers have been excited about the idea that some planets beyond our solar system might be covered by vast, ...

New simulations suggest Earthlike planets may be much more typical than previously thought whereas water worlds may not.

Normally when a medium-size star dies, it blasts away the bulk of material in its system. The Hubble discovery was surprising ...

In total, Saturn is thought to have at least 274 moons, the greatest number of natural satellites in the solar system. After its opposition, Saturn will stay visible for many weeks, but each passing ...

Astronomers have discovered that many sub-Neptune exoplanets, once thought to host vast oceans, are far less watery than ...

A new study challenges the dream of water-rich “Hycean” planets like K2-18b, suggesting that most sub-Neptunes lose their water deep into their interiors during formation. Instead of vast oceans, ...

"The complexity of the exo-Neptunian landscape provides offers a unique window onto the processes involved in the formation ...

NASA/ESA Hubble Space Telescope, Gemini North telescope and NASA Infrared Telescope Facility observations of Neptune and Uranus may have revealed why they differ in color. Credit: Directed by: Bethany ...

There is much less water on the surfaces of distant planets outside our solar system than previously thought. These ...

The Hubble Space Telescope time-lapse captured footage of Jupiter, Saturn, Uranus and Neptune. Credit: SCIENCE: NASA, ESA, ...

Human exploration of the universe is truly endless, always leading to new surprises. On September 4 this year, NASA, the ...