s i n i m p e r m e a b l e

Neil deGrasse Tyson is optimistic about Earth’s future (and his new TV series) 'Cosmos: A Spacetime Odyssey' revives the classic Carl Sagan show.

The OTP Series: (3 of ?) | Alice x John

Hubble’s ‘Frontier Fields’ photos show galaxy 3.5 billion light-years away The detailed images of early galaxies could help scientists map dark matter in the universe.