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.
Estimating distances in astronomy is challenging ... His measurements marked the end of the Great Debate about the Milky Way's size and the nature of the nebulae. Hubble wrote about his discovery ...
The Gaia mission, launched by the European Space Agency, has completed a decade of groundbreaking astronomical observations, collecting over three trillion data points on two billion stars and ...