The 2019 World Science Festival kicks off this week in New York City! Hear from its founder, Brian Greene.
The biggest, most expensive science experiment in the world might be losing all its dark matter. But physicists are looking on the bright side.
The kilogram isn't a thing anymore. Instead, it's an abstract idea about light and energy and fundamental universal constants.
Earlier this month, engineers put the Mars 2020 rover's fully assembled spacecraft through some tests at the Space Simulator Facility at NASA's Jet Propulsion Laboratory in Pasadena, California.
Buried oceans like the one sloshing beneath the icy surface of the Jupiter moon Europa may be far more common across the cosmos than scientists had imagined.
Here's a guide to SpaceX's launch schedule, other rocket missions, astronomical events of the next year, as well as milestones for spacecraft already in travel.
An Illinois police officer on a routine trip earlier this month saw a fireball suddenly light up the sky in front of the car's dashboard camera.
Space.com's editors present a reading list for space and sci-fi lovers, as well as children who are interested in astronomy and spaceflight.