Snapshots from Atlas 5 launch

After a six-month voyage from Earth, NASA’s InSight Mars lander, streaking through space at at some 12,300 mph, will slam into the thin martian atmosphere Monday afternoon to begin a nail-biting six-and-a-half-minute descent to the surface, kicking off a billion-dollar mission to probe the red planet’s hidden interior.

An Atlas 5 rocket rumbled into space Saturday evening after lifting off from Cape Canaveral with multiple U.S. Air Force communications and tech demo satellites, and brilliant clear skies made for ideal viewing conditions shortly before sunset.

Rocket Lab’s Electron rocket is set to launch 13 CubeSats Saturday night (U.S. time) under contract to NASA from the company’s privately-owned spaceport in New Zealand, a pathfinder mission that could pave the way for more NASA satellites to hitch a ride on future Electron flights.