HR 8799 d
EXOPLANET · the heavy mover
Astronomers have photographed this giant so many times over the years that they can animate its motion: a planet visibly crawling along its orbit around another star. HR 8799 d glows deep red with youth and weighs about seven Jupiters. Watching other worlds actually move makes the galaxy feel wonderfully mechanical.
🚀 Fly there in the 3D universe