M51-ULS-1
M51-ULS-1
X-ray binary in the Whirlpool Galaxy.
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Readers' pathsAug 2026 – Oct 2026
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Extragalactic planet
Planet that is outside the Milky Way galaxy.
19%
Whirlpool Galaxy
Galaxy in the constellation Canes Venatici.
15%
Blanet
Planet that orbits a black hole.
15%
M33 X-7
Binary black hole-star systems in the constellation Triangulum.
7.7%
Celestia
Astronomy computer program.
7.4%
Circumbinary planet
Planet that orbits two stars instead of one.
4.6%
Canes Venatici
Constellation in the northern celestial hemisphere.
3.7%
High-mass X-ray binary
Type of binary star.
3.7%
Blue supergiant
Hot, luminous star with a spectral type of A9 or earlier.
3.3%
X-ray binary
Class of binary stars.
1.8%
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