Our solar system hosts almost 900 known moons; more than 400 orbit the eight planets while the remaining orbit dwarf planets, ...

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NASA scientists believe they have found indirect evidence of a moon orbiting an exoplanet with similarities to Jupiter's moon Io, pictured here. Credit: NASA / JPL-Caltech / SwRI / MSSS Scientists ...

After decades of searching, astronomers may have finally stumbled upon the first moon known to exist beyond our solar system—and it's an absolute giant. Reading time 3 minutes In September, NASA ...

For the first time, astronomers have discovered what could be an exomoon, a moon outside our solar system. The so-called exomoon, which is estimated to be the size of Neptune, was found in orbit ...

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 ...

A new analysis of a peculiar metallic cloud surrounding the exoplanet WASP-49 b provides further evidence that it may have been birthed by a volcanic satellite, which may become the first officially ...

After decades of searching, astronomers might finally be on the verge of discovering thefirst confirmed exomoon, a natural satellite orbiting a distant exoplanet. If the findings hold up, it could be ...

Scientists have spotted a few thousand exoplanets, or planets orbiting stars other than our sun. Exomoons are another story. There have been some potential exomoons, but nothing definitive. Now, a ...

Astronomers have so far identified over 1,800 exoplanets orbiting other stars. And the Kepler space telescope (Opens in a new window)has identified several thousand more possibilities, some of which ...