Long theorized but never observed, the first known “planet with a death wish” is described by Ilin and her colleagues in a ...

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

The clingy planet orbits so close to its star, it triggers powerful explosions of radiation that eat away at its atmosphere.

A recent study has uncovered a dramatic interaction between a planet and its parent star that is reshaping our understanding ...

A fluffy, Jupiter-sized planet may be triggering deadly flares from its star, leading to the slow destruction of its own atmosphere.

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

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

This new planet, located 1,200 light-years from Earth, is 50% larger than Jupiter but seven times less massive, giving it an extremely low density comparable to that of cotton candy.

Matching the density of the two planets produces a model that has a bit over 10 percent of the planet's mass composed of water. This, however, means that about half the planet's volume is water.

Astronomers have discovered a gas giant planet with the density of a marshmallow orbiting a cool red dwarf star located 580 light-years from Earth. The Jupiter-like exoplanet is the lowest-density ...

To their great surprise, the accumulated measurements revealed an extremely low density for the planet. Its mass and its size, they calculated, were about 0.14 and 1.5 that of Jupiter, respectively.

Scientists have discovered a planet that they said could float in a bathtub if you could get one large enough. The planet is about 580 light-years away from us and is orbiting a red dwarf star in ...