410 Years Ago: Galileo Discovers Jupiter’s Moons - NASA
网页2020年1月9日 · Peering through his newly-improved 20-power homemade telescope at the planet Jupiter on Jan. 7, 1610, Italian astronomer Galileo Galilei noticed three other points of light near the planet, at first believing them to be distant stars.
Galilean moons - Wikipedia
网页The Galilean moons (/ ˌɡælɪˈleɪ.ən /), [1] or Galilean satellites, are the four largest moons of Jupiter: Io, Europa, Ganymede, and Callisto.
Moons of Jupiter - Wikipedia
网页The Galilean moons are by far the largest and most massive objects to orbit Jupiter, with the remaining 91 known moons and the rings together comprising just 0.003% of the total orbiting mass. Of Jupiter 's moons, eight are regular satellites with prograde and nearly circular orbits that are not greatly inclined with respect to Jupiter's ...
Galileo’s Observations of the Moon, Jupiter, Venus and the Sun
网页2009年2月24日 · Galileo sparked the birth of modern astronomy with his observations of the Moon, phases of Venus, moons around Jupiter, sunspots, and the news that seemingly countless individual stars make up the Milky Way Galaxy.
Moons of Jupiter | Table, Names, Sizes, & List | Britannica
网页Jupiter is the largest planet in the solar system and has, as of 2023, 95 known moons. The four largest moons of Jupiter—Io, Callisto, Ganymede, and Europa—were the first objects in the solar system discovered with a telescope. Galileo discovered them in 1610, and they are now called the Galilean satellites.
Galileo Discovers Jupiter’s Moons - Education
网页On January 7, 1610, Italian astronomer Galileo Galilei discovered, using a homemade telescope, four moons orbiting the planet Jupiter. Looking at what he thought were a group of stars, he realized the objects appeared to move in a regular pattern.
What are Jupiter’s Galilean moons? | The Planetary Society
网页2023年12月26日 · Jupiter’s Galilean moons are the closest large moons to Earth, and are therefore the most easily visible through a small telescope. Today, NASA’s Juno mission is in orbit around Jupiter, getting opportunities to observe some of its moons.
Jupiter - Galilean Moons, Gas Giant, Great Red Spot | Britannica
网页2 天之前 · Jupiter's four Galilean moons Montage of Jupiter's four Galilean moons—(left to right) Io, Europa, Ganymede, and Callisto—imaged individually by the Galileo spacecraft, 1996–97. The images are scaled proportionally and arranged in order of the moons' increasing distance from Jupiter.
The Galilean moons of Jupiter and how to observe them
网页2023年4月13日 · The origins of Jupiter's Galilean moons is a long-standing mystery. But new research suggests a promising pathway for how they may have formed. From bottom to top is Io, Europa, Ganymede, and...
Moons of Jupiter - Science@NASA
网页Jupiter's four largest moons were the first moons discovered beyond Earth. They are called the Galilean satellites after Italian astronomer Galileo Galilei, who is credited with their discovery in 1610.