Researchers have spent decades trying to pin down exactly how long a day on Venus lasts. Finding the answer cuts to the core of fundamental mysteries about the planet. ...read more
Some astronomers didn’t like the religious implications of a universe with a beginning. Their alternative was the so-called “steady state model.” ...read more
Researchers tested new light sail tech in the lab and say their design could better steer the tiny, laser-powered interstellar spacecraft. ...read more