Looking for a sky event this week? Check out our full Sky This Week column. October 17: Catch open cluster M34 Jupiter stands ...

Looking for a sky event this week? Check out our full Sky This Week column. October 18: Io, Europa, and their shadows cross ...

"Detecting an exomoon would be quite extraordinary, and because of Io, we know that a volcanic exomoon is possible." When you purchase through links on our site, we may earn an affiliate commission.

Jupiter’s Moon Io in the latest picture taken by the Juno spacecraft. Image: NASA/JPL-Caltech/SwRI/MSSS/Ted Stryk After years of capturing the massive world of ...

Data from the James Webb Space Telescope and other observatories suggests a supervolcanic exomoon may lurk around the giant ...

An exoplanet the size of Earth has been discovered in a distant solar system, and it could be bursting with volcanic activity. According to a paper published on Wednesday in the journal Nature, the ...

NASA’s Juno spacecraft has taken the best images of Jupiter’s moon Io in decades, as it passed by at a distance of 11,645 kilometres on 16 October. Io is slightly larger than Earth’s moon and mottled ...

An exoplanet covered in so many volcanoes that its molten surface radiates a fiery red has been discovered orbiting a star 66 light-years from Earth. That sentence may ring a bell for Star Wars fans, ...