See how the odd orbits Neptune's inner moons Naiad and Thalassa enable them to avoid each other, as they race around the planet. Researchers call it a "dance of avoidance."
Highlights of the November sky include how to watch as Mercury transits the Sun.
NASA's InSight lander on Mars is trying to use its robotic arm to get the mission’s heat flow probe, or mole, digging again.
What's Up for September? Following the crescent Moon, the September equinox and — wait — where did Mars go?
See NASA’s next Mars rover quite literally coming together inside a clean room at the Jet Propulsion Laboratory.
The Mars 2020 Rover is preparing to launch to the Red Planet in July 2020, but it doesn't have a name yet.
In the August sky, look for the "shooting stars" of the annual Perseid meteor shower for some stargazing delights.
A team of engineers at NASA's Jet Propulsion Laboratory in Pasadena, California, install the legs and wheels — otherwise known as the mobility suspension — on the Mars 2020 rover.