Earth" and a massive outer planet, revealing insights into extreme planetary evolution. An international research team, led ...

But into what? Over many millions of years, NASA suspects the young world could mature into either of the most common planets found in our Milky Way galaxy: a "super-Earth" or mini-Neptune.

Earth' 750 light-years away, with 8 Earth masses packed into 1.6x Earth’s size, orbiting its star in just 21 hours.

The newcomer replacing Pluto presently goes by “Planet Nine.” If and when it finally shows up, it will get the honor of a ...

Smaller gas giants are less likely to survive in such systems, surrounded by clashing planetary titans. With their lower ...

Using the James Webb Space Telescope (JWST), astronomers have characterized the atmosphere of a hot super-Neptune exoplanet ...

NASA have discovered a planet bigger than Earth accompanied by gas that is 'only produced by life' in what is an incredible ...

NASA monitors the South Atlantic Anomaly, a growing magnetic field disturbance affecting satellites and spacecraft.

For contrast, the oldest planet yet discovered is 12.7 billion years ... comparable to a gaseous mini-Neptune or even a rocky super-Earth. Because of the enticing findings, the researchers say ...

Scientists Emily Simpson and Howard Chen discovered that if a super-Earth had existed between Mars and Jupiter, Earth's delicate climate balance would have been destroyed. If Phaedra had been 10 ...