The amount of dust on the snowpack, not the warmth of the spring air, controls the pace of spring snowmelt flowing into the Colorado River.
Some Mars experts are eager and optimistic for a dust storm this year to grow so grand it darkens skies around the entire Red Planet.
The robotic lander deployed its solar panels for the last time before it reaches Mars later this year.
Asteroid 2002 AJ129 will make a close approach to Earth on Feb. 4, 2018, but no closer than 10 times the distance between Earth and the moon.
Saturn's moon Titan may be nearly a billion miles away from Earth, but a recent paper from NASA's Cassini mission reveals a new way this world and our own are eerily similar.
The year 2017 marked several milestones in science, technology and flight projects for NASA's Jet Propulsion Laboratory, Pasadena, California.
Researchers using NASA's Mars Reconnaissance Orbiter (MRO) have found eight sites where thick deposits of ice beneath Mars' surface are exposed in faces of eroding slopes.