MAVEN — spacecraft, shown live in Cosmoscope, a real-time 3D map of the universe.
MAVEN sniffs the upper Martian atmosphere to learn how the planet lost its air — and its oceans — to space over billions of years.
Cosmoscope draws MAVEN on its real trajectory, from mission ephemeris rather than an artist's impression. Open the live 3D view to see where MAVEN is right now, how far it has travelled from the Sun, and how long its radio signal takes to reach Earth. Scrub the timeline to replay the route that took it there.