Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...

An exoplanet, TOI-5205 b, which is almost as large as Jupiter, orbits a small red star. By many estimates, this red star ...

The search for life beyond Earth has followed a familiar logic: find a rocky planet orbiting in the habitable zone, where temperatures could allow liquid water, and you may have a world worth watching ...

In general, anything larger than 13 times the mass of Jupiter has been deemed a brown dwarf, as these objects should be able ...

Unfortunately for science fiction fans, desert worlds outside our solar system are unlikely to host life, according to new ...

A new experimental study published in Geochimica et Cosmochimica Acta reveals that Mercury’s sulfur-rich interior behaves in ...

Talk about a hot mess. Scientists have uncovered a hellish “lava world” where temperatures soar to a blistering 2,700 degrees Fahrenheit — hot enough to melt rock into a churning ocean of magma and ...

Planets are born from the rotating disk of gas and dust that surrounds a star in its youth. While it is commonly accepted that giant planets form in these cloudy disks that result from the birth of ...

Astronomers have long been puzzled by a cosmic mystery: planets orbiting two stars—like Star Wars’ Tatooine—are surprisingly rare, even though they should be common. New research suggests the culprit ...

Dying stars may be wiping out nearby giant planets as they expand into red giants. Astronomers found that these close-in planets become increasingly rare around more evolved stars, suggesting many ...

"Please make Pluto a planet again. I really want it to be a planet again," Kayla begins, eliciting a response from the NASA ...

This letter report reviews the science goals of the current Terrestrial Planet Finder (TPF) project as well as NASA’s plan for acquiring the necessary precursor knowledge to successfully meet those ...