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

Alinda has made its closest approach to our planet in decades, and it's about to peak in brightness in a rare ...

Astronomers have discovered an Earth-size planet ... around 'Hell Planet' in distant star system Although SPECULOOS-3 b isn't ...

It's around the same size as Jupiter but less than a third as massive, and orbits a main sequence star roughly 160 light-years from Earth. It is very close to ... measure the planet and its ...

It orbits its version of the sun every 12.8 days and is a similar size to Earth. The planet’s equivalent of the Sun, called Gliese 12, is a cool, red dwarf located in the constellation Pisces ...

Mars’ strangely small mass still puzzles planetary scientists. Definitive answers as to why are still hard to come by.

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

Since its launch in April 2018, the satellite has been conducting a survey of about 200,000 of the brightest stars near ... Earth radii. More information: Michelle Kunimoto et al, Two Earth-size ...

Previous observations suggested that Ceres was less than 30% ice, and its craters were thought to imply that the dwarf planet ... close to Earth," Sori said. "Ceres may be a valuable point of ...

Astronomers have identified an Earth-size exoplanet orbiting an ultracool ... to study atmospheric retention in planets close to their stars. This could provide insights applicable to the ...

It’s designated as a “near Earth object,” or NEO, based on its size and how close it orbits to the sun. NEOs are “potentially hazardous”—but rest assured, this one isn’t. Asteroid ...