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XMM-Newton and Chandra help revise distance to Milky Way's outer spiral arms

XMM-Newton and Chandra help revise distance to Milky Way's outer spiral arms
Phys.org Wednesday 01 July 2026, 16:20 UTC 1 min read
Key Points

The European Space Agency's XMM-Newton and NASA's Chandra X-ray space telescopes have spotted the aftermath of three bright explosions echoing through the outer spiral arms of our galaxy, the Milky Way. By measuring the distance to these echoes, they found the outer arms to be up to 10% farther away than previously thought.

The European Space Agency's XMM-Newton and NASA's Chandra X-ray space telescopes have spotted the aftermath of three bright explosions echoing through the outer spiral arms of our galaxy, the Milky Way. By measuring the distance to these echoes, they found the outer arms to be up to 10% farther away than previously thought.
XMM-Newton (ORG) Chandra (ORG) Milky Way's (PERSON) The European Space Agency's (ORG) NASA (ORG) Chandra X-ray (PERSON)
Originally published by Phys.org Read original →

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