Exomoon (art)

Exoplanets

Have Astronomers Detected Exomoons At Last?

Have astronomers detected two giant exomoons? The answer depends on how convincing you deem newly presented results — and how you define a moon.

Exomoon (art)

Exoplanets

Exomoon or No Exomoon?

Last October, the first discovery of a potential exomoon was announced. But is Kepler-1625b-i an actual moon in another solar system? Or just an artifact of data reduction?

Illustration of Kepler-1625b and exomoon in transit

Exoplanets

Hubble Boosts Case for Exomoon

Exoplanet Kepler-1625b might harbor a moon the size of Neptune—potentially the first confirmed exomoon—but researchers urge caution.

Saturn's moons

Exoplanets

Best Exomoon Candidate Yet?

Astronomers have found one of the best exomoon candidates in data collected by the Kepler spacecraft.

Giant ringed planet

Celestial News & Events

Help Astronomers Track a Giant, Ringed Planet

The possible discovery of a massive ringed planet in Orion needs confirmation — and amateur astronomers can help.

ring system around J1407b

Exoplanets

Gap Reveals Potential Exomoon

Astronomers have confirmed that the star J1407 seems to have a companion with a gigantic, gap-ridden ring, inside which an “exomoon” might be forming.

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