- An international team of scientists led by Columbia University researcher Andreas Küpper used stars outside this disk, which orbit around the Milky Way in a stream-like structure, to weigh the Milky Way to high precision.
- The researchers used data from the Sloan Digital Sky Survey, which scanned the sky of the Northern Hemisphere for about 10 years to create a comprehensive catalog of stars in the sky. The stream they tested the new technique on was produced by a globular cluster named Palomar 5, and had already been discovered in 2001 high above the Galactic disk.
- In the future, the researchers aim to use more structures like the Palomar 5 stream to gain an even higher precision and to create the most realistic model of the Milky Way to date.
Scientists Can Now Weigh the Milky Way
6. 3. 15 by Angelie Hawks