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Science
XMM-Newton and Chandra help revise distance to Milky Way's outer spiral arms
Astronomers revise distance to Milky Way's outer spiral arms using XMM-Newton and Chandra
3 trends tracked about this subject — the full history, oldest to newest below.
Astronomers revise distance to Milky Way's outer spiral arms using XMM-Newton and Chandra
The discovery of a planet surviving its star's death suggests Earth may have a future beyond the demise of the sun.
Interstellar comet 3I/ATLAS may be the oldest object ever seen in our solar system, dating back up to 12 billion years.