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Like Saturn's largest moon Titan, it is larger than the planet Mercury, but has somewhat less surface gravity than Mercury, Io, or the Moon due to its lower density compared to the three. [18] Ganymede orbits Jupiter in roughly seven days and is in a 1:2:4 orbital resonance with the moons Europa and Io, respectively.
The sizes and masses of many of the moons of Jupiter and Saturn are fairly well known due to numerous observations and interactions of the Galileo and Cassini orbiters; however, many of the moons with a radius less than ~100 km, such as Jupiter's Himalia, have far less certain masses. [5]
As the below graph demonstrates, the maximum absolute magnitude (total inherent brightness, abbreviated H) of moons we have detected around planets occurs at H = 18 for Jupiter, H = 17 for Saturn, H = 14 for Uranus, and H = 12 for Neptune. Smaller moons may (and most likely do) exist around each of these planets, but are currently undetectable ...
The Galilean moons are named after Galileo Galilei, who observed them in either December 1609 or January 1610, and recognized them as satellites of Jupiter in March 1610; [2] they remained the only known moons of Jupiter until the discovery of the fifth largest moon of Jupiter Amalthea in 1892. [3]
Jupiter and Europa science probe with an ETA in 2030. Solar Orbit on route to Jupiter: In service: 2024– Jupiter Icy Moons Explorer: 5,963 kg (13,146 lb) Jupiter science probe and Ganymede orbiter with an ETA in 2031. Solar Orbit on route to Ganymede: In service: 2023– Falcon Heavy test flight: 5,900 kg (13,007 lb)
EchoStar XXIV, also known as Jupiter 3, is a communications satellite operated by Hughes Network Systems (an EchoStar company). It provides satellite internet service to customers across North and South America at download speeds of up to 100 Mbps. [4] The satellite was built by Maxar Technologies in Palo Alto, California.
Surprise! Harry Styles just dropped a new music video for “Satellite,” the eleventh track from his 2022 studio album Harry’s House, and we’re simply over the moon (pun very intended).The ...
Himalia (/ h ɪ ˈ m eɪ l i ə, h ɪ ˈ m ɑː l i ə /), also known as Jupiter VI, is the largest irregular satellite of Jupiter. With a diameter of at least 140 km (90 mi), [ 5 ] it is the sixth largest Jovian satellite , after the four Galilean moons and Amalthea .