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 ...

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

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.

Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position ... away a galaxy was, the faster it was moving away from Earth.

This spacecraft, dedicated to mapping the Milky Way, has exhausted its propellant ... The Lagrange L2 point is a position in space where the gravitational forces of the Earth and the Sun balance, ...

The MeerKAT telescope is located in the Karoo region of South Africa, is made up of 64 radio dishes and is operated and ...

The Andromeda Galaxy is hurtling towards us at an incredible speed of 250,000 miles per hour! That’s fast enough to cover the distance between the Earth ... with the Milky Way, resulting in ...

The Hubble Space Telescope has used its sensitive instruments to create a mosaic image containing 2.5 billion of the Milky Way's closest neighbor.

Crucial to all life on Earth, the 15th element of phosphorus remains a real puzzle for astronomers. Specialized space telescopes are needed to shed light on the issue.

Observations show Andromeda has a more active star formation history than the Milky Way, potentially ... stars in the Andromeda galaxy that are brighter than Earth's sun. But astronomers estimate ...