In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...

High radiation during a time of frenzied star formation in the Milky Way left one stellar population with few chances to form planets, a study reports.

These stars offer valuable insights into the galaxy’s evolution and structure. In about 4.5 billion years, the Andromeda Galaxy will collide with the Milky Way, resulting in a spectacular cosmic ...

Observations show Andromeda has a more active star formation history than the Milky Way, potentially due to a past galactic collision. NASA recently released images of the Andromeda galaxy ...

Hubble’s work opened the door to the study of the universe beyond our galaxy ... telescope to show that the Milky Way was composed of a huge number of faint stars. For the next 300 years ...

Hubble's work opened the door to the study of the universe beyond our galaxy ... telescope to show that the Milky Way was composed of a huge number of faint stars. For the next 300 years ...