When we observe distant celestial objects, there is a possible catch: Is that star I am observing really as reddish as it ...
Voluminous clouds of cosmic dust permeate our galaxy, but only recently has software allowed detailed observations of the ...
An ambitious new survey by the Hubble Space Telescope offers the first bird's-eye view of all known dwarf galaxies orbiting ...
Astronomers have discovered the smallest dwarf galaxy ever seen. It is a mystery how the satellite galaxy of Andromeda ...
Hubble's study reveals Andromeda experienced major galactic collisions, unlike Milky Way. Its satellite galaxies show unusual ...