Weighing just over 1,300 pounds, NASA’s Van Allen Probe A is hurtling toward Earth, its fiery re-entry set to slam into the ...

Jupiter's moons can have surprising effects on the world's displays of auroral lights by "stomping down" on the planet's gigantic magnetic environment. These surprising effects, detected in ...

Sixty-six light-years away, an Earth-sized exoplanet completes an orbit in under six hours, skimming around its star at nearly one-hundredth the distance that Mercury orbits the Sun. This planet is on ...

Most planets spin like tops around the sun. But one planet in the solar system breaks all the rules. Uranus is the weirdest world in our solar system. It rolls around the sun like a giant blue barrel.