Astronaut Barry “Butch” Wilmore is “doing good” but is having a “rough” time adjusting to gravity after his prolonged nine-month stint in outer space, his daughter revealed.

About 4.5 billion years ago, gravity coaxed Earth to form from the ... about three miles thick—and denser. Planet Earth, explained Like Venus and Mars, Earth has mountains, valleys, and volcanoes.

is in theory destined for spaghettification thanks to a sharp increase in the strength of gravity as you fall into the black hole. Black Holes, explained As astrophysicist Neil Degrasse Tyson once ...

Friday is World Down Syndrome Day, a time to raise awareness about those who were born with an extra chromosome. Wednesday, ...