Jupiter TOP STORY

Signs of Europa Plumes Remain Elusive in Search of Cassini Data

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Europa

The new research provides a snapshot of Europa's state of activity at that time, and suggests that if there is plume activity, it is likely intermittent.


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Jupiter TOP STORIES

The Origin Of Jupiter's Great Red Spot

© NASA

Jupiter

The ruddy color of Jupiter's Great Red Spot is likely a product of simple chemicals being broken apart by sunlight in the planet's upper atmosphere, according to a new analysis of data from NASA's Cassini mission.

Ganymede Passes In Front of Jupiter's Great Red Spot

Ganymede Passes In Front of Jupiter's Great Red Spot

Hubble treats astronomers to gorgeous close-up views of the eerie outer planets. But it's a bit of a trick when it seems like the planet's looking back at you!


Evidence of 'Diving' Tectonic Plates on Jupiter's Moon Europa

Evidence of 'Diving' Tectonic Plates on Jupiter's Moon Europa

Scientists have found evidence of plate tectonics on Jupiter's moon Europa. This indicates the first sign of this type of surface-shifting geological activity on a world other than Earth.


Massive Eruptions on Io

Massive Eruptions on Io

Three massive volcanic eruptions occurred on Jupiter's moon Io within a two-week period last August, leading astronomers to speculate that these presumed rare "outbursts".


Jupiter's Great Red Spot is Smaller than Ever Measured

Jupiter's Great Red Spot is Smaller than Ever Measured Video in Story

Jupiter's trademark Great Red Spot -- a swirling anti-cyclonic storm larger than Earth -- has shrunk to its smallest size ever measured.


Juno Gives Starship-Like View of Earth Flyby

Juno Gives Starship-Like View of Earth Flyby Video in Story

When NASA's Juno spacecraft flew past Earth on Oct. 9, 2013, it received a boost in speed of more than 8,800 mph (about 7.3 kilometer per second)


Forty Years Ago, Pioneer 10's Closest Approach to Jupiter

On Dec. 4, 1973, NASA's Pioneer 10 spacecraft sent back images of Jupiter of ever-increasing size.


Jupiter and Saturn Are Awash in Diamonds

Jupiter and Saturn Are Awash in Diamonds

Recent work by planetary scientists has indicated that the deep atmospheres of Jupiter and Saturn may contain chunks of diamond floating in a liquid hydrogen/helium fluid.


Juno Prepares For Earth Flyby on Wednesday

Juno Prepares For Earth Flyby on Wednesday

NASA's Juno spacecraft launched aboard an Atlas V rocket from Cape Canaveral Air Force Station, Fla., Aug. 5, 2011, beginning a five-year journey to Jupiter. But it wasn't charted on a direct path. Before it reaches its destination, Juno will greet the Earth one last time. The spacecraft will perform a flyby Oct. 9, passing within 347 miles of Earth.


Stressed Europa Likely Off-Kilter in the Past

Stressed Europa Likely Off-Kilter in the Past

By analyzing the distinctive cracks lining the icy face of Europa, NASA scientists found evidence that this moon of Jupiter likely spun around a tilted axis at some point.


Amateur Astronomers Observe Jupiter Fireballs

Amateur Astronomers Observe Jupiter Fireballs

The solar system is crowded with small objects like asteroids and comets. Most have stable orbits which keep them out of harm's way, but a small proportion of them are in orbits that risk them colliding with planets.


NASA Exploration Spacecraft Juno is Halfway to Jupiter

NASA Exploration Spacecraft Juno is Halfway to Jupiter

NASA's Juno spacecraft is halfway to Jupiter. The Jovian-system-bound spacecraft reached the milestone today (8/12/13) at 5:25 a.m. PDT (8:25 a.m. EDT/12:25 UTC).


Jupiter's Moon Europa a Mystery with Many Questions

Jupiter's Moon Europa a Mystery with Many Questions

Most of what scientists know of Jupiter's moon Europa they have gleaned from a dozen or so close flybys from NASA's Voyager 2 spacecraft in 1979 and NASA's Galileo spacecraft in the mid-to-late 1990s.


Herschel Links Jupiter's Water to Comet Impact

Herschel Links Jupiter's Water to Comet Impact

ESA's Herschel space observatory has solved a long-standing mystery as to the origin of water in the upper atmosphere of Jupiter, finding conclusive evidence that it was delivered by the dramatic impact of comet Shoemaker-Levy 9 in July 1994.


Are Io's Volcanoes In The Wrong Locations?

Are Io's Volcanoes In The Wrong Locations?

Jupiter's moon Io is the most volcanically active world in the solar system, with hundreds of volcanoes, some erupting lava fountains up to 250 miles high (about 400 kilometers). However, concentrations of volcanic activity are significantly displaced from where they are expected to be, based on models that predict how the moon's interior is heated, according to NASA and European Space Agency researchers.


'Hot spots' ride a merry-go-round on Jupiter

'Hot spots' ride a merry-go-round on Jupiter Video in Story

The dark hot spot in this false-color image from NASA's Cassini spacecraft is a window deep into Jupiter's atmosphere. All around it are layers of higher clouds, with colors indicating which layer of the atmosphere the clouds are in.


ESA Selects Science Instrument and Hardware for European Mission to Jupiter

ESA Selects Science Instrument and Hardware for European Mission to Jupiter

The JUpiter ICy moons Explorer mission, JUICE, will carry a total of 11 scientific experiments to study the gas giant planet and its large ocean-bearing moons, ESA announced today.



More top stories from December.