Four telescope projects have been nominated to be NASA’s next great observatory. But which will take home the coveted award?
The Beresheet lunar lander’s $90 million budget came mostly from private funders.
This week, we say goodbye to the rover that turned a 90-day mission into a 14-year journey on the Red Planet.
President Trump said he wants to end the spread of HIV in the U.S. by 2030. But he stayed silent on climate change.
The Earth’s inner core was once molten liquid and then solidified. New research suggests that may have happened much more recently than we thought.
The moon may have gotten its distinct pockmarked appearance more recently than you think.