Out of the 6,000 known exoplanets, it's these rocky worlds that are most worthy of attention in the search for life beyond our planet.
The molten planet, with an atmosphere rich in sulfur-bearing gases, is unlike anything astronomers have ever smelled.
The collision likely resembles the one that formed the Moon around 4.5 billion years ago.
A closer look at the planets around a star called LHS 1903 may just flip our understanding of how planetary systems form.
A double sunset appears to be a true rarity in the cosmos, and general relativity explains why.
The hot super-Earth exoplanet has a magma ocean and orbits a very old star.
The free-floating object is swallowing surrounding material at an astonishing, record-breaking pace.
Alien life could exist on hot, rocky planets, sustained not by water but by a type of salty fluid, new research suggests.
Researchers may have discovered a gas giant orbiting the star Alpha Centauri A, and it appears to be in the star's habitable zone.
The clingy planet orbits so close to its star, it triggers powerful explosions of radiation that eat away at its atmosphere.
The space-based observatory has revolutionized the way we see space, and it can now add another remarkable accomplishment to its growing list.
This exoplanet’s glow confirms it’s real, and it's somehow survived a stellar death spiral.
Peculiarities in the orbits of two brown dwarfs indicate the presence of something even more extraordinary.
Dimethyl sulfide is cool—and a potential biosignature—but scientists are urging caution before we declare a plankton party some 120 light-years away.
New JWST data strengthens earlier hints that K2-18b, a possible water world 120 light-years away, could host the chemical byproducts of life.
New findings flip a previous theory of a planet's end on its head.
A new study finally sheds light on our mysterious cosmic neighbors and sets a planet-hunting record.
Water was present just a couple hundred million years after the Big Bang, according to a new study, shaking up the timeline of planetary evolution.
Meet Tylos: a gas giant 900 light years away and with a climate never seen before on any planet known to scientists.
A super-Neptune orbiting a star is zipping through space at 1.2 million miles per hour—or potentially faster.
