The specs of the new planet, called Proxima b, sound much like Earth’s. It is 1.3 times the mass of the Earth or bigger. It is probably rocky, like Earth, and not a Jupiter-like ball of gas.

Proxima b is a fascinating target for study, and not just because it’s an Earth-like planet in the star system nearest to our sun. The planet has a mass around 1.3 times that of Earth, ...

It may initially seem like a simple question, but determining which planet is closest to Earth is surprisingly tricky and can have multiple correct answers. When you purchase through links on our ...

A quartet of Earth-like worlds, each about 20% to 30% the size of our planet, circle one of our closest stellar neighbors, a new study reveals. The rocky alien worlds are close enough that future ...

The James Webb telescope has made another stunning discovery -- this time of a massive planet that could potentially sustain ...

The Trappist-1 system, just 40 light years from Earth, contains 7 rocky planets - all roughly the size of Earth. Packed tightly within the space between Mercury and the Sun, three of these planets lie ...

Astronomers have discovered the youngest known Earth-sized planet circling a nearby Sun-like star. At just 400 million years old, the newfound world, named HD 63433 d, is more than 10 times ...

The relative sizes of the three known planets in the HD 63433 system, with the young Earth-like planet with a lava surface closest to the star. The other two planets are mini-Neptunes.

A group of astronomers have discovered an exoplanet orbiting the closest single star to Earth’s Sun. The earth-like planet has at least half the mass of Venus, and a year lasts only a little ...