Year in Review Space These discoveries from 2021, if true, could shake up science Hidden subatomic particles and the oldest animal fossils are among findings that need more evidence Fourteen celestial sources of gamma rays (colored dots in this all-sky map of the Milky Way; yellow indicates bright sources and blue shows dim sources) may come from stars made of antimatter. SIMON DUPOURQUÉ/IRAP Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Aina Abell December 21, 2021 at 10:00 am Discoveries in 2021 dared the world to consider grand possibilities in physics, space and the origins of life.