Gaia was launched on December 19, 2013, and began scanning the stars in July 2014. It mapped over two billion stars, ...

Gaia has given us that view without ever leaving L2. While many prior efforts to trace the Milky Way's structure depended on ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

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.

Recent studies challenge the long-held belief that the Milky Way is a standard model for understanding galaxy formation, ...

Soon, the Gaia spacecraft will leave orbit and begin its retirement in the depths of space. In the last 10 years, it has ...

The James Webb Space Telescope has captured a mid-infrared picture of Sagittarius A*, filling in a long-standing gap in ...

Astronomers have detected a mid-infrared flare from the supermassive black hole at the heart of the Milky Way galaxy for the ...

Hubble revealed a universe of galaxies that existed beyond ours — but he couldn't have done it without a little help.

The European Space Agency's Milky Way-mapper Gaia has completed the sky-scanning phase of its mission, racking up more than 3 ...

Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they were independent galaxies, extremely large and distant. At the time ...