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Tuesday, September 22, 2026 · UTC
Launches & Rockets

GJ 3090 b orbits its star backward, study reports

A 2026 study in Astronomy & Astrophysics finds the exoplanet's orbit is misaligned about 136 degrees from its host star's rotation.

Luisa Marconi
Senior Space Correspondent
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Stands on 3 placed sources from 2 publishers.
Exoplanet GJ 3090 b orbits its host star in a retrograde direction, circling opposite to the star's rotation with an orbital misalignment of approximately 136 degrees, a study in the journal Astronomy & Astrophysics reports.[2]