A 12-year sequence of telescope images captures a star and four planets orbiting. The footage, shared by The Planetary Guy on Bluesky, shows the exoplanets moving around their host star over more than a decade. The post has garnered attention on Hacker News, where it received 45 points and 5 comments.
The images were taken by the W. M. Keck Observatory in Hawaii, using the NIRC2 instrument.
The star, HR 8799, is located about 133.3 light-years away from Earth. The four planets, discovered between 2008 and 2010, range in mass from 5 to 10 times that of Jupiter. The sequence provides a rare direct view of planetary motion.
Source: Hacker News · Summarized by HeadlinesBriefing