NPR

Here's why Jupiter's tally of moons keeps going up and up

The first astronomer to discover moons around Jupiter was Galileo, back in the year 1610, but astronomers are still finding more and more moons around this gas giant.
This composite was made with images from NASA's Juno mission and shows the shadow on Jupiter cast by Io, one of its many moons.

Scientists have spotted 12 more moons around Jupiter, adding to an already-huge number that just seems to grow and grow.

There's so many moons around this gas giant planet that astronomer Scott Sheppard struggles to keep track.

"With this new haul, we're up to, I believe, 92 ... actually, I have to check that," he says, leaning over to type into his computer at the Carnegie Institution for Science, Earth and Planets Laboratory in Washington, DC. " Yeah, so 92 is the

You’re reading a preview, subscribe to read more.

More from NPR

NPR5 min read
Here's This Year's List Of The Most Endangered Historic Places In The U.S.
The National Trust's annual list includes Eatonville, the all-Black Florida town memorialized by Zora Neale Hurston, Alaska's Sitka Tlingit Clan houses, and the home of country singer Cindy Walker.
NPR6 min readSocial History
For Many Missouri Catholics, Abortion Rights Means Choosing Between Faith, Politics
The state is shaping up to be big battleground over abortion rights in November. Research shows a majority of U.S. Catholics supports abortion rights — even though church leadership does not.
NPR2 min read
3 Salad Recipes To Segue From Winter To Spring
Think of these three salad recipes as an introduction to a new season, a combination of color, textures and bright spring flavors. They are light but substantial and satisfying enough to be a main course for lunch or dinner. 

Related Books & Audiobooks