The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

HD 20794 d completes its orbit just shy of two Earth years, placing it well within reach of conditions that might harbor life ...

Located less than 20 light years away, HD 20794d could potentially be one of the most Earth-like planets found so far, ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

The risk of impact is likely to drop to zero as observations of Asteroid 2024 YR4 continue.

First discovered in 2009, GJ 1214 b is described by the JWST team as being “sub-Neptune-sized” - smaller than the outermost ...

A planet that may support alien life has been discovered less than 20 light-years away from Earth - and it's believed to ...

Astronomers have discovered a large Earth-like planet orbiting a distant star that could be home to alien life. The exoplanet ...

HD 20794d orbits its star with two other super-Earth planets, designated b and c, which orbit their star every 18.3 and 89.6 days, respectively. These were discovered in 2011 by a team of Geneva ...

A new study suggests that a close encounter with a massive interstellar object, possibly eight times the mass of Jupiter, may ...

Meeting of the American Astronomical Society, two teams of astronomers—centered at Penn State and MIT—independently announced ...