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Jupiter

Even though it is around the same size as our own Moon and a whole lot farther from the Sun, Jupiter's moon Europa is considered one of our solar system's most likely candidates for harboring extraterrestrial life. A deep and mysterious ocean is thought to exist below its icy crust and has beckoned scientists for more than a decade. NASA is in the process of conceptualizing a future mission to explore Europa, and has now confirmed which scientific instruments it will send along to do the job.

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NASA's Hubble Space Telescope has captured a rare image of a triple transit, as three of Jupiter's largest moons cast their shadows on the gas giant's planetary disk. The three moons captured in the image – Europa, Callisto and Io, were among the first celestial objects observed with a telescope, and were instrumental in debunking the long held belief that the Earth was at the center of the universe. Read More

Another celestial body has been added to NASA's bucket list as the space agency officially asks the US Congress for US$30 million for the first mission aimed at exploring Jupiter’s moon Europa. Part of the FY 2015 NASA Planetary Science budget, it would fund further development of an unmanned probe to study place in the Solar System outside of Earth where life may exist. Read More
At some point in their lives, who hasn't looked up at the sky and gazed in wonder at Earth's closest companion? Hanging a dizzying 384,400 km (238, 606 miles) above us, the Moon has stood like a silent sentinel throughout our species' short existence. It has enticed some to visit and inspired others to look to the universe beyond. The Russian space agency Roscosmos recently released series of videos shot from the perspective of Earth, showing us what it would look like if other planets and stars took the place of our Moon and Sun. Read More
The Great Red Spot is the distinguishing feature that makes Jupiter one of the most easily recognizable planets in our solar system. Until recently, it was widely believed that this blemish was formed as a result of reddish-colored chemicals rising up from within the planet itself. However, using information obtained by analysis of data from the Cassini fly-by mission of Jupiter, researchers working at NASA's Jet Propulsion Laboratory have discerned that the planet's Great Red Spot may have more to do with the external action of the sun than some internal mechanism. Read More
A series of three massive volcanic eruptions detected on the surface of Jupiter's moon Io in August last year, has the potential to yield insights into the formation process of the surface of Earth-like planets. By any standards, these eruptions were enormous, characterized as titanic curtains of lava issuing forth from fissures several miles in length, that spewed massive amounts of material high above the moon's surface. Read More
Data collected by NASA's Hubble Space Telescope over the past 20 years show Jupiter's Great Red Spot has been shrinking at an increasing rate to its current, and smallest, recorded size. The reduction is possibly due to the existence of eddies, that have been observed feeding into the planet-sized storm. Read More
In a combination of the astronomical and the culinary, scientists at NASA’s Jet Propulsion Laboratory (JPL) say that Jupiter’s largest moon, Ganymede, may not have a single large ocean, but instead may be built like a club sandwich with alternating layers of ice and water. The claim is based on computer models of how salt water acts under the high pressures that may exist beneath Ganymede’s global ice pack, and may improve the chances of finding life elsewhere in the Solar System. Read More

NASA scientists have produced the first global geological map of Jupiter's largest moon Ganymede by combining images from over twenty years of observation by the Voyager spacecraft and the Galileo orbiter. Read More

If you want to have a starship captain’s view of flying past the Earth, then NASA is happy to oblige. This week, the space agency released a video made of images taken by the Juno space probe as it shot past our planet last October. The unmanned spacecraft was using the Earth’s gravity to build up its velocity by over 8,800 mph (14,100 km/h) and slingshot it on its way to Jupiter. And as it did so, it took the time to receive a “Hi” from ham radio operators back home. Read More
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