Analysis of the second confirmed interstellar comet to visit our solar system suggests that the alien body could be covered ...

This unexpected discovery could rewrite everything we know about comets and their behavior in space. The Discovery of ...

The moon could contain massive slabs of ice at its north and south poles formed from the steam of vast ancient volcanoes, according to new research. If the new predictions are correct, it opens up the ...

The explosiveness of a volcanic eruption depends on how many gas bubbles form in the magma—and when. Until now, it was thought that gas bubbles were formed primarily when the ambient pressure dropped ...

Some scientists think we can better understand volcanoes by learning how the gaseous vortexes emerge. By Carolyn Wilke Some volcanoes perform a rather subtle trick: blowing rings of vapor that waft ...

NASA Apollo 17 astronaut Eugene Cernan drives a moon buggy at the lunar Taurus-Littrow Valley landing site in 1972. No one expected these glittering bits among the gray lunar dust back then. The beads ...

An undersea volcano erupted off Japan three weeks ago, providing a rare view of the birth of a tiny new island, but experts say it may not last very long. The unnamed undersea volcano, located about ...