Search results for exomoon

Astronomy Dec 1, 2025

Astrometry suggests possible exomoon orbiting gas giant HD 206893 B

Have scientists finally confirmed the existence of the first exomoon? This is what a study released on the preprint server arXiv, and accepted for publication in Astronomy & Astrophysics, hopes to address. A large international ...

Astrobiology Nov 11, 2025

Never mind rogue planets—their rogue moons could support life

At a young age, we're told how the sun warms Earth and makes life possible. That idea sticks with most of us for life. But when we want to understand things more thoroughly and we dig more deeply, we learn that Earth has ...

Planetary Sciences Nov 10, 2025

Habitable zone planets around red dwarfs aren't likely to host exomoons, simulations suggest

There are no confirmed exomoons, moons orbiting distant exoplanets in other solar systems. There are a few candidates, but none have passed the threshold and been accepted as confirmed. But they must exist. Moons are common ...

Astronomy Sep 24, 2025

Finding exomoons using their host planet's wobble

Exoplanets aren't the only objects floating around other stars—they likely have comets and asteroids as well. Even some of the exoplanets themselves will have "exomoons," at least according to our current understanding of ...

Astrobiology Aug 18, 2025

How did Jupiter's Galilean moons form? Scientists explore moon formation theories

We already know a decent amount about how planets form, but moon formation is another process entirely, and one we're not as familiar with. Scientists think they understand how the most important moon in our solar system ...

Planetary Sciences May 28, 2025

Will Europa become a habitable world when the sun becomes a red giant?

People always want to know what will happen to Earth when the sun eventually swells up as a red giant. For one thing, the expanding sun will turn the inner planets into cinders. It will almost certainly spell the end of life ...

Astrobiology Feb 10, 2025

Is methane the key to finding life on other worlds?

How would detecting methane help astronomers identify if exoplanets, or even exomoons, have life as we know it, or even as we don't know it? This is what a recent study published in The Astronomical Journal hopes to address ...

Planetary Sciences Feb 10, 2025

Scientists spot candidate for speediest exoplanet system

Astronomers may have discovered a scrawny star bolting through the middle of our galaxy with a planet in tow. If confirmed, the pair sets a new record for the fastest-moving exoplanet system, nearly double our solar system's ...

Planetary Sciences Dec 16, 2024

Could planets orbiting two stars have moons?

Exomoons are a hot topic in the science community, as none have been confirmed with astronomers finding new and creative ways to identify them. But while astronomers have searched for exomoons orbiting exoplanets around single ...

Astrobiology Nov 6, 2024

Examining how stellar threats impact the habitable zone of exoplanets

When we think of exoplanets that may be able to support life, we home in on the habitable zone. A habitable zone is a region around a star where planets receive enough stellar energy to have liquid surface water. It's a somewhat ...

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