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Galilean Moons

All articles tagged with #galilean moons

astronomy2 days ago•120 min saved

October 6 Lunar Occultation Hides Jupiter and Its Moons in Rare Pre-Dawn Spectacle

On October 6, 2026, a waning crescent Moon passed in front of Jupiter, hiding the gas giant and its four Galilean moons for approximately one hour. Visible across eastern North America, parts of Canada, and the Atlantic, the event offered a rare pre-dawn spectacle. While the full occultation was visible in darkness for many, observers in western regions saw only Jupiter’s reappearance from the Moon’s dark limb. The event, occurring roughly once every 13 years for a specific location, drew significant attention from astrophotographers who captured detailed images of the alignment.

via Space|

#astronomy #astrophotography #galilean-moons

astronomy4 days ago•93 min saved

Jupiter Vanishes Behind Waning Moon in Rare October Occultation

On October 6, 2026, a waning crescent Moon passed in front of Jupiter, hiding the planet and its four Galilean moons from view for approximately one hour. This rare alignment, visible across eastern North America, the Caribbean, and parts of Africa, occurred in pre-dawn hours. The event, which happens roughly once every 13 years for a specific location, allowed observers to witness Jupiter re-emerge from the Moon’s dark limb, accompanied by its satellites.

via Live Science|

#astronomy #galilean-moons #jupiter

science3 months ago•12 min saved

Galileo's Four Moons Upend Earth-Centered Cosmos

In 1610 Galileo used a telescope to observe four moons orbiting Jupiter, providing observable evidence against the geocentric view that everything revolved around Earth and marking a turning point toward heliocentrism, even though the shift unfolded gradually and with resistance.

via Space Daily|

#galilean-moons #galileo #geocentric-model

science1 year ago•2 min saved

Juno Unveils New Mysteries in Jupiter's Auroras and Moons

NASA's Juno spacecraft has successfully detected the elusive auroral signature of Jupiter's moon Callisto, completing the set of auroral footprints from the planet's four largest moons, and providing new insights into their interactions with Jupiter's magnetic environment.

via NASA Science (.gov)|

#callisto #galilean-moons #juno-mission

science1 year ago•2 min saved

Jupiter Shines Brightest This Weekend: A Celestial Spectacle

This weekend, Jupiter will be at its brightest as Earth positions itself between the gas giant and the sun, making it visible all night. With clear skies, observers can see Jupiter's four largest moons using binoculars or a telescope. The planet will rise in the east-northeast in the Taurus constellation. Additionally, the Winter Triangle and the Geminid meteor shower, peaking on December 13-14, will be visible, though the nearly full moon may obscure some meteors.

via NBC News|

#astronomy #galilean-moons #geminid-meteor-shower

science1 year ago•3 min saved

December Stargazing: Jupiter Shines Brightest in the Night Sky

Jupiter, the largest planet in our solar system, is easily observable from Earth and is known for its massive size and bright appearance. With a diameter that can fit 11 Earths and a mass greater than all other planets combined, Jupiter's gravitational influence shapes the orbits of many comets and asteroids. Its four largest moons, discovered by Galileo, can be seen with modest telescopes. NASA's Juno mission, which began in 2016, has provided significant insights into Jupiter's interior and its moons, with future missions like the Europa Clipper set to expand our understanding further.

via Science@NASA|

#astronomy #galilean-moons #juno-mission

astronomy2 years ago•3 min saved

"Observing Jupiter: Spotting the King of Planets"

Jupiter, the largest planet in our solar system, is easily observable from Earth and has a significant impact on the outer solar system due to its enormous mass. Its four largest moons, known as the Galilean moons, can be observed with modest equipment. NASA's Juno mission has been studying Jupiter since 2016, providing valuable insights into the planet's interior, and will soon be joined by the Europa Clipper mission to further explore the potential for life on Jupiter's moon, Europa.

via Science@NASA|

#astronomy #galilean-moons #juno-mission

astronomy2 years ago•6 min saved

"November's Celestial Spectacles: Jupiter, Meteor Showers, and More in NYC Skies"

In November, sky watchers in New York City can enjoy the sight of a bright Jupiter, the Taurids and Leonids meteor showers, and the peak settings of the Perseus family of constellations. Jupiter will be at its closest point to Earth on November 1-2 and fully illuminated on November 2. The Taurids meteor shower will peak on November 5-6, followed by the Leonids meteor shower on November 17-18. Jupiter's four largest moons, known as the Galilean moons, will be visible alongside the planet. Sky watchers can also locate constellations by using the Big Dipper as a guide.

via Gothamist|

#astronomy #galilean-moons #jupiter

space3 years ago•2 min saved

Juno Spacecraft Captures Mesmerizing Green Lightning on Jupiter's Atmosphere

NASA's Juno mission completed its 49th close flyby of Jupiter on March 1, 2023, capturing remarkable images of high-altitude haze bands forming over cyclones in a region referred to as Jet N7. The Juno mission aims to understand the origin and evolution of Jupiter, using a suite of scientific instruments, including the JunoCam, a camera specifically designed to capture high-resolution images of Jupiter's poles. Jupiter is the largest planet in our solar system, renowned for its massive size and distinctive bands of swirling, colorful clouds, and is surrounded by at least 95 moons, the four largest being Io, Europa, Ganymede, and Callisto.

via SciTechDaily|

#galilean-moons #high-altitude-haze #juno-mission

skywatching3 years ago•6 min saved

Catch Jupiter's Disappearing Act During Lunar Occultation on May 17

On May 17, a lunar occultation will occur where Jupiter and its four Galilean moons will pass behind a thin, 5% illuminated waning crescent moon as seen from North America. The best views of Jupiter's disappearance behind the moon will be from the western third of the United States and Canada, where at least part of it happens before sunrise. Binoculars will give a better view, and a telescope will be needed to follow its moons.

via Space.com|

#galilean-moons #jupiter #moon

space3 years ago•2 min saved

Jupiter Probe's Stuck Antenna Unfurls with Clever Fix.

The JUICE probe, on its way to explore Jupiter's icy moons, encountered a problem when its ice-penetrating RIME antenna refused to deploy. Engineers tried several methods to dislodge the stuck antenna, including shaking and baking it in the sun, but it remained lodged. Finally, a "non-explosive actuator" was fired, which moved the pin holding the antenna in place, allowing it to fully deploy. The probe will continue its eight-year journey to Jupiter, where it will explore Europa, Ganymede, and Callisto.

via Yahoo News|

#galilean-moons #juice #jupiter

space3 years ago•3 min saved

JUICE spacecraft captures stunning photos on its way to Jupiter.

Amateur and professional astronomers captured images of the Jupiter Icy Moons Explorer (JUICE) spacecraft as it headed away from Earth on its eight-year trip to Jupiter. The European Space Agency (ESA) JUICE mission departed from the European Spaceport in Kourou, French Guiana, at 08:14 EDT (1214 GMT) journeying aboard an Ariane 5 rocket. The primary mission of JUICE will be to investigate the subsurface oceans believed to dwell beneath the icy shells of Jupiter's moons, Europa, Callisto, and Ganymede, which could help determine if any of these moons possess the conditions needed to support life.

via Space.com|

#amateur-astronomers #galilean-moons #juice-spacecraft

science-and-astronomy3 years ago•3 min saved

JUICE Mission Set to Launch for Exploration of Jupiter and Its Moons.

Europe's first-ever Jupiter mission, the Jupiter Icy Moons Explorer probe (JUICE), is set to launch on April 13 atop an Ariane 5 rocket from Europe's Spaceport in French Guiana. JUICE will conduct a series of flybys of three of Jupiter's four big Galilean moons — Ganymede, Europa, and Callisto, all of which are thought to possess oceans of liquid water beneath their icy shells. JUICE will be the first probe ever to orbit a moon other than that of Earth. NASA's Europa Clipper, which will focus on Europa, is scheduled to lift off in October 2024.

via Space.com|

#europa-clipper #galilean-moons #juice

astronomy3 years ago•3 min saved

Bright Baby Jupiter Could Have Baked Its Moons

A new study suggests that a young Jupiter could have irradiated its four largest moons with light so intense that it vaporized water and stripped them of volatiles. This could explain why the Galilean moons have the compositions they do, from the hellacious volcano-world Io, closest to Jupiter, to ice-crusted Europa, then giant moon Ganymede, to the most distant, the crater-scarred Callisto. The findings offer a plausible explanation for the strange compositional differences between the four Galilean moons, which are thought to have formed from the same cloud of dust circling Jupiter.

via ScienceAlert|

#astronomy #composition #formation