One of Jupiter's four large Galilean moons, believed on the strength of magnetic and surface evidence to hold a deep subsurface saltwater ocean beneath its icy crust, making it one of the leading candidates in the search for life beyond Earth.
Facts
Object TypeNatural satellite (moon of Jupiter) 1 Diameter (km) Orbital Distanceabout 670,900 km from Jupiter 2 Discovery Year Connections
Associated With
Source Wikipedia: Europa (moon)
Source Wikipedia: Europa (moon)
Source Wikipedia: Europa (moon)
Source NASA Solar System Exploration
Europa is locked in a 2:1 orbital resonance with Io and 4:1 with Ganymede.
Source NASA Solar System Exploration
Source NASA Solar System Exploration: Ocean Worlds
Source NASA Solar System Exploration: Ocean Worlds
Source NASA Solar System Exploration
Orbits
Source NASA Solar System Exploration
Sources
1. NASA Solar System Exploration
National Aeronautics and Space AdministrationEuropa page, Facts About Europa section, ocean sentence
Scientists believe a saltwater ocean lies beneath its icy shell, holding twice as much water as Earth's global ocean.
Europa page, Facts About Europa section, size sentence
Europa is the fourth largest of Jupiter's 95 moons.
Europa page, Exploring Europa section, first flybys sentence
Europa was first observed up close during the Jupiter flybys of Pioneer 10, Pioneer 11, Voyager 1 and Voyager 2
Europa page, Exploring Europa section, Europa Clipper sentence
NASA's Europa Clipper launched on Oct. 14, 2024, on the first mission to conduct a detailed science investigation of Europa.
Entity description, europa catalogue classification
One of Jupiter's four large Galilean moons, believed on the strength of magnetic and surface evidence to hold a deep subsurface saltwater ocean beneath its icy crust, making it one of the leading candidates in the search for life beyond Earth.
- Orbits: Jupiter
Associated With: The Moon, Europa page, Description section, size comparison sentence
Europa is about the size of Earth's moon, with a diameter of 3,130 kilometers (1.945 miles).
Associated With: Voyager 2, Europa page, Exploring Europa section, Voyager flybys sentence
Europa was first observed up close during the Jupiter flybys of Pioneer 10, Pioneer 11, Voyager 1 and Voyager 2.
Associated With: Jupiter, Europa page, Facts About Europa section, Jupiter moon ranking sentence
Europa is the fourth largest of Jupiter's 95 moons.
View the Source 2. Wikipedia (space and spaceflight articles)
Wikimedia FoundationEuropa (moon), Wikipedia - physical characteristics infobox
approximately 4.79984 x 10^22 kg
Europa (moon), Wikipedia - orbital characteristics infobox
670900 km
View the Source 3. Encyclopedia Britannica: Space Exploration
Wikipedia: Europa (moon)
Europa (moon), Wikipedia - lead section, opening sentence
Europa is the smallest and least massive of Jupiter's four Galilean moons.
Associated With: Io, Orbit and rotation section
The orbital eccentricity of Europa is continuously pumped by its mean-motion resonance with Io.
Associated With: Ganymede, Europa (moon), Wikipedia - Discovery and naming section, Ganymede named among the other large moons
Europa, along with Jupiter's three other large moons, Io, Ganymede, and Callisto, was discovered by Galileo Galilei on 8 January 1610.
Associated With: Callisto, Europa (moon), Wikipedia - Discovery and naming section, Callisto named among the other large moons
Europa, along with Jupiter's three other large moons, Io, Ganymede, and Callisto, was discovered by Galileo Galilei on 8 January 1610.
In Group: Moons of Jupiter, Lead sentence
Europa ( ) is the smallest and least massive of Jupiter's four Galilean moons.
View the SourceNASA Solar System Exploration: Ocean Worlds
Associated With: Titan, Jupiter's Moon Europa section, subsurface ocean sentence
Scientists strongly suspect that a salty, subsurface ocean lies beneath Europa's icy crust.
Associated With: Titan, Saturn's Moon Titan section, subsurface ocean sentence
Titan is believed to have a salty subsurface ocean
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