The Satellites of Mars

There are lots of 3D maps that visualize the tens of thousands of human-made satellites orbiting the Earth, such as SatelliteeXplorer and James Darpinian's See a Satellite Tonight, which uses Google's Street View imagery to show you exactly where to look in the night sky if you want to watch a satellite passing overhead.

Perigee takes a rather broader view of humanity's presence in space. As well as visualizing thousands of satellites orbiting the Earth, this impressive 3D viewer lets you explore spacecraft orbiting the Moon and Mars, and even track probes travelling through the wider Solar System.

On Earth you can explore around 16,600 active catalogued satellites, with the option to filter them by operator, country, constellation, orbit type or launch site. You can also search for individual satellites by name or NORAD number and click on them to see details such as their operator, launch date and orbit.

The same 3D interface can then be used to explore our planetary neighbours. Switch to the Moon to see active lunar orbiters such as LRO, Danuri, Chandrayaan-2 and CAPSTONE, along with more than 50 lunar landing and impact sites. On Mars you can explore the planet's orbiters, Phobos and Deimos, landing sites and even the latest positions of the Curiosity and Perseverance rovers.

Zoom out further and Perigee becomes a map of the wider Solar System, showing the planets, five dwarf planets and more than 20 spacecraft, including the Voyager probes, Juno, Parker Solar Probe, JUICE and Europa Clipper. You can speed up time by as much as 100,000 times or jump to a specific date to see how the positions of objects change.