An arrowhead-shaped rock on Mars sporting features that may hint at ancient microbial activity on the Red Planet has left ...

A close up of the Mars rock of interest ... The fine-grained mudstone named Cheyava Falls, after the highest waterfall in Arizona's Grand Canyon, sits at the edge of an ancient river valley ...

When you think of the tallest mountains ... This behemoth isn't just the biggest volcano on Mars but the largest in the entire solar system! It dwarfs every volcano on Earth, painting a picture ...

NASA's Perseverance rover has encountered another rock on Mars that has left scientists puzzled.

And Mount Etna, the tallest volcano in Europe, erupted on Feb. 8 and again two days later, just days before the Hawaii volcano. With ash emissions and other smaller bursts of gas and magma ...

JAKARTA, Indonesia - A volcano in eastern Indonesia erupted late Thursday, sending a dark ash tower eight kilometers (nearly five miles) into the sky as officials raised the alert level to its highest ...

Diverse Ancient Volcanoes on Mars Discovered by Planetary Scientist May Hold Clues to Pre-Plate Tectonic Activity on Earth Feb. 15, 2024 — A geologist has revealed intriguing insights into the ...

“And now we're seeing all four of those are giving us those indicators.” Mount Spurr is the tallest volcano in the Aleutian Arc, a batch of several dozen volcanic islands stretching from ...