Sally Ride was the 1st American woman to go to space, flying on the STS-7 space shuttle Challenger mission in 1983, and later on another mission in 1984.
Studying rivers from space using satellite imagery helps scientists see how rivers can suddenly change course, bringing the risk of flooding to communities.
As a planetary defense exercise, scientists used a recent approach of Apophis as a test to see how quickly they could track and identify a hazardous asteroid.
Members of the EarthSky community - including scientists, as well as science and nature writers from across the globe - weigh in on what's important to them.