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A British-U.S. team of researchers detected signs of two chemicals in the planet's atmosphere long considered to be "biosignatures" indicating extraterrestrial life.

Relatively little is known about Denisovans, an extinct group of human cousins that interacted with Neanderthals and Homo sapiens.

The discovery shows the cultural interaction between the Maya of Tikal and Teotihuacan's elite between 300 and 500 A.D., archaeologists said.

Colossal Biosciences said it used ancient DNA from the extinct species to create three dire wolf pups named Romulus, Remus and Khaleesi.

Astronaut Jonny Kim, son of South Korean immigrants, a former Navy SEAL and Harvard M.D., blasted off with 2 Russian cosmonauts on a flight to the space station for an eight-month stay.

SpaceX's third all-civilian privately chartered flight was the first to carry a crew into polar orbit.

Churchill, Manitoba, a small village on the Hudson Bay, is known as the polar bear capital of the world.

The international all-civilian Fram2 crew is the first in space history to fly to orbit with no licensed pilot or trained astronaut on board.

The new findings come from the Dark Energy Spectroscopic Instrument (DESI), which sits on a telescope at the Kitt Peak National Observatory in Arizona.