An Accidental Impact Crater Discovery
There are roughly 200 confirmed impact structures on Earth, but geologists estimate that hundreds more lurk undiscovered. Now,…
A Bit of Gray on an Emerald Isle
Today’s story is the answer to the March 2026 puzzler. Though Ireland is known for the many shades…
Scoria Cones on Earth and Mars
Since the 1970s, planetary geologists have known that volcanic features cover large swaths of Mars. Early Mariner 9…