"L 98-59 c could be the first planet smaller than 2 Earth radii with a definitively detected atmosphere," a team of ...

As astronomers delve deeper into the diversity of worlds orbiting distant stars, a new study suggests comparing populations ...

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NASA's TESS telescope has discovered an intriguing exoplanet, TOI-1453 c, located 250 light-years away, with an unusually low density. Measuring 2.2 times the size of Earth and 2.9 times its mass, it ...

The gas giants outside our solar system are not capable of hosting extraterrestrial life, but do offer clues in a lingering mystery about how distant planets form, researchers said.

NASA has discovered a new world, named Gliese 12 b. It is roughly the size of Earth, lies in the habitable zone, and orbits every 12.8 days.

So in some sense, alien worlds were not first discovered in the 1990s or even the 1980s. It took nearly a century to fully ...

They then compared the occurrence rates of these planets using data from NASA's TESS, or Transiting Exoplanet Survey Satellite, for the younger population and from Kepler for the older population.

Scientists are using an array of instruments to detect other planets, some of which may harbor life—and others that most ...

Credit: NASA/CSA/ESA/J. Olmstead (STScI)/N. Madhusudhan (Cambridge University) A chemical found in the atmosphere around an ...

Scientists have been receiving X-ray signals from the Helix Nebula for decades, but now they believe it may hide a horrifying ...