Scientists figured out in 2017 that Ultima Thule is not spherical but possibly elongated in shape. It may even be two objects
Researchers believe a newly discovered galaxy is the solution to the mystery of missing stars.
One of the first space walking astronauts to repair the Hubble State Telescope described his experience in space as "always kind of fun".
Space shuttle Atlantis and seven astronauts blasted off on Monday on an ambitious 11-day mission to refurbish the Hubble Space Telescope.
