Astronomers have identified a frozen, Earth-sized world circling a nearby sunlike star, a find that sharpens the search for planets that resemble our own while underscoring how rare truly temperate ...

A newly identified Earth-sized exoplanet with a year-long orbit may lie near its star’s habitable zone, but extreme cold could limit its chances of hosting liquid water.

“This is the first planet candidate with Earth-like radius and orbital properties transiting a Sun-like star bright enough ...

But unlike Jupiter, Venus does have phases, going from not illuminated at all (when it is between the Earth and the Sun) to ...

An international team led by the Universities of Geneva (UNIGE) and Montreal published the first results today from the NIRPS spectrograph installed on the European Southern Observatory's (ESO) ...

V1298 Tau links swollen young worlds to the compact planets that astronomers keep finding, and its timing signals made that ...