Ancient rocks hold proof of Earth's magnetic field. Here's why that's puzzling
Earth's ancient magnetic field appears to have had a strength similar to what we see today, and it may have protected ancient life from harmful cosmic radiation.
By Elizabeth Howell published
Veteran NASA astronauts Butch Wilmore and Suni Williams are in quarantine at agency facilities before the 1st Boeing Starliner launch. They are expected to fly on May 6.
By Robert Z. Pearlman published
The "Hoppers" — five European astronauts and the first astronaut from the Australian Space Agency — are now ready to "hop" into their first flight assignments, having completed basic training.
By Fabian Klenner published
As a planetary scientist and astrobiologist who studies ice grains from Enceladus, I'm interested in whether there is life on this or other icy moons. I also want to understand how scientists like me could detect it.
By Tariq Malik last updated
Reference The full moon happens about once a month. Find out when.
By Jeff Spry published
A review of Zack Snyder's "Rebel Moon — Part Two: The Scargiver."
By Jase Parnell-Brookes last updated
Buying Guide The best compact binoculars offer fantastic views in a lightweight, small package without compromising on image quality — check out our favorite models.