XMM–Newton

作者：DaveBowman2001 nilsausta

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XMM-Newton is a European space telescope designed to observe objects in both x-ray and visible light simultaneously. It was launched in December 1999, about two months after NASA's Chandra X-ray Observatory. Newton is still operational as of 2025, and will continue to observe the universe until 2026 or 2029.

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