A team working with data from the dearly departed Kepler space telescope has reported a possible moon orbiting an exoplanet some 5,000 light years away. It falls somewhere between the size of Earth ...

"In our solar system, the most massive moon is Ganymede, which is still extremely small compared to what we are inferring ...

Astronomers may, for the first time, be confirming an exomoon in our universe, much like our moon, but outside our solar system. This marks an intriguing revelation for space discovery, considering ...

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 ...

A new study published as a pre-peer-reviewed paper on arXiv and accepted for publication in Astronomy & Astrophysics suggests ...

The find, the second candidate for an exomoon, may be the next big thing in astronomy. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. It's time ...

Some of the same researchers who found the first purported exomoon now say that they’ve found another. Dubbed Kepler 1708 b i, the satellite has a radius about 2.6 times that of Earth, and circles a ...

And then there were two—maybe. Astronomers say they have found a second plausible candidate for a moon beyond our solar system, an exomoon, orbiting a world nearly 6,000 light-years from Earth. Called ...

WASP-39b is about the size of Saturn and whips around its sunlike star once every four days; that broiling orbit heats the planet’s dayside to 1,430 degrees Fahrenheit (776 degrees Celsius). WASP-49Ab ...