As far as extrasolar planets go, ‘GJ 367 b’ is a featherweight. With half the mass of Earth, the newly discovered planet is one of the lightest among the nearly 5000 exoplanets known today.

Kepler-1649c is located 300 light-years from Earth. NASA described it as the "most similar to Earth in size and estimated temperature" out of the thousands of exoplanets discovered by Kepler.

Planet hunters using Keck Observatory have detected an extrasolar planet that is only four times the mass of Earth. The planet is the second smallest exoplanet ever discovered and adds to ...

“This discovery supports the growing belief that we live in a universe crowded with life,” Boss said. “Kepler is on the verge of determining the actual abundance of habitable, Earth-like ...

HARPS achieved a precision of 1 meter per second, enabling the discovery of smaller planets, including the first super-Earth.

If this theoretical second planet in the system is confirmed, it would become the smallest habitable-zone planet discovered by TESS, NASA's exoplanet-detecting satellite.

Scientists studying data from the Alpha Centauri star system on Wednesday announced what they believe is a second Earth-like planet orbiting the star closest to the sun.The finding, announced via ...

The first discovery of a second Earth will likely be another watershed moment for her and many, she said. "An Earth analogue has different implications," she said.