A Meteor Crashed Into Mars and Sent Shockwaves Racing Across the Planet. It Apparently Happens More Often Than We Thought
There's a hidden "seismic highway" beneath Mars' surface.
There's a hidden "seismic highway" beneath Mars' surface.
Mars may have oceans' worth of water — but it's more than 10 km under the surface.
The magnitude 5 quake might only shake a glass of water here on Earth, but it's a big deal on ...