The James Webb telescope has made another stunning discovery -- this time of a massive planet that could potentially sustain ...

Stars often whip their planets with solar winds and radiation, pull them ever closer with gravity and sear them with heat.

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Some planets take the expression "you're your own worst enemy" to the extreme — triggering stellar flares from their own ...

Astronomers using the European Space Agency's Cheops mission have caught an exoplanet that seems to be triggering flares of ...

Since its debut in 2021, the James Webb Space Telescope has dazzled viewers with its infrared images of galaxies, nebulae, ...

TOI-6894 b, the largest exoplanet relative to its host star yet seen, doesn’t fit the most widely accepted formation model ...

Objects need to be at least 400 km or so in size to round out via self-gravity, and there’s still lots of room for large numbers of them to lurk undiscovered in the darkness beyond Neptune.

Everything in space—from Earth and the sun to black holes—accounts for just 15% of all matter in the universe. The rest of ...

The last time all eight planets aligned was on Dec. 28, 2022, according to Sky and Telescope.org. A six-planet parade of planets occurred in June 2024. When can you see the parade of planets?