Found in the northern sky, GJ 3378b is a potentially rocky world with liquid water on its surface, receiving 90% of the ...

Scientists revealed Wednesday that Mars' innermost core appears to be a solid hunk of metal just like Earth's. The Chinese-led research team based their findings on seismic readings from NASA's ...

Earth is our only example of a habitable planet, so it makes sense to search for Earth-size worlds when we're hunting for potentially-habitable exoplanets. When astronomers found seven of them ...

Artwork: The red tinge illustrates an atmosphere around a rocky planet orbting a red star Researchers have found the first atmosphere surrounding an Earth-like, rocky planet orbiting within the ...

Our Milky Way galaxy's most common type of star is called a red dwarf - much smaller and less luminous than our sun. These stars - or so it was thought - simply are not big enough to host planets much ...

Scientists found a Martian meteorite on Earth that is finally filling in a nearly 2-billion-year-old geology-history gap on the Red Planet.