Galactic Ghosts: Gaia Uncovers Major Event in the Formation of the Milky Way0
- From Around the Web, Space
- November 14, 2018
ESA’s Gaia mission has made a major breakthrough in unravelling the formation history of the Milky Way.
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Gaia Sees Effects of Milky Way’s Close Encounter with Sagittarius Dwarf Galaxy0
- From Around the Web, Space
- September 21, 2018
Astronomers analyzing data from the second release of ESA’s star mapping mission Gaia have shown that our Milky Way Galaxy is still enduring the effects of a near collision that set millions of its stars moving like ripples on a pond. The close encounter likely took place sometime in the past 300-900 million years, and the culprit could be the Sagittarius dwarf galaxy, an elliptical loop-shaped galaxy located 78,300 light-years away. It was discovered because of the pattern of movement it has given to stars in the Milky Way disk.
Gaia creates richest star map of our Galaxy—and beyond0
- From Around the Web, Space
- April 26, 2018
ESA’s Gaia mission has produced the richest star catalogue to date, including high-precision measurements of nearly 1.7 billion stars and revealing previously unseen details of our home Galaxy.
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