New Star Maps Shed Light on Milky Way's Convulsive History

Hints of ghostly galaxies and ancient cataclysms in data from the Gaia spacecraft offer fresh insights into dark matter

-- Read more on ScientificAmerican.com

from Scientific American News http://bit.ly/2HC07B0
via IFTTT

• Twitter
• Facebook
• Google
• Tumblr
• Pinterest