Venus, our solar system's broiling, radiation-bombarded, sulfuric-acid-raining, toxic hellscape of a planet, may once have been quite nice, actually.
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Often, when we don't have an immediate explanation for something strange in space, some people blame aliens. But better explanations usually come along in time.
Powerful storms have erupted on Jupiter, and they're screwing up the planet's beautiful belts of white and color.
Pluto lost its "official" planet status over a decade ago, but fans of the solar system's underdog are still rooting for it. And NASA Administrator Jim Bridenstine is one of them.
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.