Astronomers have discovered more than 300 exoplanetary systems that have three or more known planets. Most of these planets are about the same size and spaced close together, earning them the moniker ...

How did Jupiter’s formation shape the solar system, and specifically Earth’s orbit? This is what a recent study published in Science Advances hopes to address as a team of scientists investigated the ...

NASA’s Juno spacecraft has returned new images of Jupiter after its 66th close flyby as it enters the final year of its mission. The $1 billion spacecraft completed its latest close flyby on Oct. 23, ...

Jupiter is not quite as large as astronomers thought, according to the first measurements of its radius taken in more than 40 years. Jupiter is a gas giant and doesn’t have a solid outer surface like ...

Share on Facebook (opens in a new window) Share on X (opens in a new window) Share on Reddit (opens in a new window) Share on Hacker News (opens in a new window) Share on Flipboard (opens in a new ...

NASA's Europa Clipper spacecraft is in for a wild ride. The launch of this mission to explore the ocean world Europa — a Jupiter moon that harbors an ocean perhaps twice the volume of all Earth's seas ...

NASA launched the Juno spacecraft in 2011 on a mission to study Jupiter, and now the spacecraft is almost to its target. Before it reaches the gas giant, Juno has already made history as it sets the ...

NASA has launched a mission to Europa, an icy moon of Jupiter thought to harbor a vast ocean. The moon is considered one of the most promising places in the solar system to search for extraterrestrial ...

Over 80% of exoplanetary systems with three or more planets exhibit a "peas-in-a-pod" architecture, characterized by similarly sized planets closely spaced and orbiting near their star. A new study ...