About 35 million years ago, an asteroid struck the ocean off the East Coast of North America, leaving behind a massive impact ... known impact crater in the United States and ranks as the 15th ...

A giant valley deeper than the Grand Canyon is buried beneath ... radar data from both ends of this huge hidden valley, but we had no information to tell us what was in between," said Ross.

The canyon on Mars would reach from New York City to San Francisco if placed in the United States ... Arizona's Grand Canyon may be awe-inspiring, but it's just "a scratch" compared to the massive ...

Then again, some lunar craters out there manage to inspire a combination of child-like wonder and abject horror that reminds us how fragile ... of a shot of the massive lunar structure as humanity ...

After collecting data for years, scientists have just announced the discovery of a 460-mile-long canyon underneath Greenland’s ice sheet, making it even longer than our own Grand Canyon—and no ...

A visit to the Grand Canyon is a true bucket list item for anyone on a US road trip ... have been up to 1,250 metres wide - more than 60 times larger than the Chelyabinsk meteor which exploded ...

Nearly a mile (1.5 km) larger than ... that made a crater more than 90% of Vesta's diameter. The same pattern applies to the grandest canyons as well. Sure, the grand canyon is legitimately ...

It only took less than ... Grand Canyon in depth. Future lunar surface explorers will be awed." This pair of lunar canyons represents two of many valleys radiating out from Schrödinger basin, a ...

About 3.8 billion years ago, two massive canyons likely formed on the moon in a span of less than ... us on the moon.” The Schrödinger impact basin, one of the younger, large impact craters ...