Cartão De Festividades Let It Snow - Hubble Space Telescope

Let It Snow - Hubble Space Telescope Holiday Card - Hubble maps the distribution of dark matter in the center of the giant galaxy cluster Abell 1689, containing about 1,000 galaxies and trillions of stars. Dark matter is an invisible form of matter that accounts for most of the universe's mass. Photo image courtesy of NASA and the Space Telescope Science Institute.