Researchers believe dark rocks at the site of a future Mars rover landing mission may be left over from ancient volcanic ...

MUNISING, MI - It’s a winter scene unique to this part of Northern Michigan: water plunges over a nearly 50-foot sandstone ...

A detailed look at Yellowstone's magma storage system finds that only one region is likely to host liquid magma in the long ...

Researchers believe dark rocks at the site of a future Mars rover landing mission may be left over from ancient volcanic eruptions, and may be protecting signs of life — if there ever was life ...

the glossy glass originates from molten rock that has been spewed out from the bowels of the Earth via volcanoes. Before we get into the snowflakes, obsidian is formed when rhyolitic magma ...

The rock is believed to have come from an ancient volcanic eruption that once blanketed the site in ash billions of years ago. In the search for life on Mars, scientists have discovered more about the ...

The rocks, or tuffs, formed from volcanic ash that settled and solidified over time. Tectonic activity lifted these layers above sea level during formation of the Japanese islands, leaving them ...

Here's what happens when underwater volcanoes erupt after scientists issue a warning regarding an upcoming blast.

As many as 400 volcanoes are erupting on the surface of Jupiter's innermost moon Io, with virtually every square inch of the moon covered in lava plains. The erupting lava (molten rock that ...