CAMBRIDGE, Mass.–Astronomers led by an MIT professor have revised the scale used to assess the threat of asteroids and comets colliding with Earth to better communicate those risks with the public.

What does it mean that Wednesday’s earthquake registered a 4.4? An early morning earthquake woke many in Atlanta on Wednesday morning, registering 4.4 on the Richter scale. But what does that mean?

Using a football field, a drone, some peas, a few pepper flakes, grapes, and some people playing soccer, Mark Rober cleverly built what is probably the easiest to understand scale model of our solar ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. It’s a difficult job to sift through the ...