Black holes that form in 'reverse Big Bang replays' could account for dark energy
Lost Maya city discovered in Mexico
Delegates agree to establish Indigenous subsidiary body at COP16 biodiversity summit in Colombia
Negotiations stall over some crucial issues on final day of UN biodiversity summit in Colombia
'Boo Deng' steals the show at NASA JPL's annual pumpkin carving contest (photos)
China's Shenzhou 19 astronauts take the reins of Tiangong space station (video)
Hubble watches neutron stars collide and explode to create black hole and 'birth atoms'
41 million digits later: Inside the quest to uncover a record-breaking prime number
