Study: The moon is very, very, very old.
Find out everything there is to know about planets and stay updated on the latest planet news with the comprehensive articles, interactive features and planet images at LiveScience.com. Learn more about space and the solar system as scientists continue to make amazing discoveries about planets.
This first-of-its-kind discovery reveals a new category of ultrahot exoplanet, one so thoroughly cooked that your cast-iron skillet would bubble, turn to gas and boil out of the atmosphere.
A NASA mission to an ancient iron-nickel hunk has entered its final design phase, a key milestone on the way to reaching the distant destination in the mid-2020s.
The two planets appear to have cleared a wide gap in their young star's protoplanetary disk. This is the first-ever observation of this behavior.
Jupiter's magnetic field has changed since the 1970s, and now physicists think they know why it's happening.
The moon's farside has thicker crust and is made up of a number of craters, while its nearside is a land of open basins.
New research suggests that the moon may have formed when a large planetoid fell into Earth's ancient magma ocean.
Astronomers found the remains of a dead planet orbiting a dead sun in a dead solar system. Happy spring!
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