142Halley's Comet begins its return journey to Earth Saturday(www.livescience.com)posted 11 months ago byLee Duna@lemmy.nzin astronomy@mander.xyzView comments15 commentssavehidereportSort:HotTopControversialNewOldYou are viewing a single thread.View all comments View context [ +- ]hperrin@lemmy.world2 points11 months agoDepending on your definition of species, HIV is the HIV of species. permalinksavereportparentreply