Latest Jupiter Stories

Juno Has Exited Safe Mode
2013-10-24 09:14:44

As of Oct. 17, Juno was approximately 4.4 million miles (7.1 million kilometers) from Earth. The one-way radio signal travel time between Earth and Juno is currently about 24 seconds.

diamonds on Jupiter and Saturn
2013-10-10 14:56:56

Researchers say that Jupiter and Saturn could contain massive quantities of solid diamonds in their cores.

Juno Flies By Earth On Way To Jupiter
2013-10-08 13:39:54

NASA's Juno mission will pass within about 350 miles of Earth's surface, which will be the closest it's been to our planet since leaving it in August 2011.

New Sensor Developed To Scan Planetary, Lunar Atmospheres
2013-10-07 13:41:22

Researchers from Chalmers University of Technology in Sweden have announced the development of a groundbreaking sensor that could eventually be used to scan the atmospheres of Jupiter’s moons and other planetary bodies.

Europa Surface Cracks Associated With One-Time Tilted Axis
2013-09-18 15:05:45

NASA scientists analyzed distinctive cracks lining the surface of Europa and found that the moon use to have a small tilt in its spin. This information could influence calculations of how much of the moon's history is recorded in its frozen shell, how much heat is generated by tides in its ocean, and how long the ocean has been liquid.

Amateur Astronomers See Fireballs Collide With Jupiter
2013-09-15 04:40:06

Amateur astronomers observing Jupiter with video cameras for the past three years have observed a trio of collisions between small stellar objects occurring around the planet.

Cassini Uncovers New Data About Saturn's Atmosphere Composition
2013-09-04 11:00:03

A new analysis of near-infrared images taken by NASA's Cassini orbiter is providing more data about the composition of Saturn's atmosphere.

Latest Jupiter Reference Libraries

2004-10-19 04:45:44

Satellite -- A satellite is an object that orbits another object. With sufficient tangential velocity, the object does not collide with the primary object it orbits, but maintains a distance from that object as the rate at which it falls towards that object is similar to the rate that it travels away, thus the object orbits the primary object and becomes a satellite. In other words: gravitational force serves as the centripetal force needed to make the object circle the primary...

2004-10-19 04:45:44

Galileo Probe -- The Galileo probe was an unmanned probe sent by NASA to study the planet Jupiter and its moons. Named after the astronomer Galileo Galilei, it was launched on October 18 1989 by the Space Shuttle Atlantis and arrived at Jupiter on December 7 1995. Galileo's launch had been significantly delayed by the hiatus in Space Shuttle launches that occurred after the Space Shuttle Challenger disaster, and new safety protocols that were implemented as a result forced Galileo to use...

2004-10-19 04:45:44

Retrograde Motion -- Retrograde motion is the orbital motion of a body in a direction opposite that which is normal to spatial bodies within a given system. 'Retrograde' derives from the Latin words retro, backwards, and gradus, step. In the Solar system, mostly everything rotates in the same sense: all major planets orbit the Sun counterclockwise as seen from the pole star (Polaris). Most planets spin in the same sense, including Earth. The same happens with the orbital motions of the...

2004-10-19 04:45:43

Positional Astronomy -- Positional astronomy is the study of the positions of celestial objects. This is the oldest branch of astronomy and dates back to antiquity. Observations of celestial objects are important for religious and astrological purposes, as well as for timekeeping. Ancient structures associated with positional astronomy include: -- Chichn Itz -- The Medicine Wheel -- The Pyramids -- Stonehenge -- The Temple of the Sun The unaided human eye can...

2004-10-19 04:45:42

Planetary Ring -- A planetary ring is a ring of dust and other small particles orbiting around a planet in a flat disc-shaped region. The most spectacular and famous planetary rings are those around Saturn, but all four of the solar system's gas giant planets (Jupiter, Saturn, Uranus, Neptune) possess ring systems of their own. The origin of planetary rings is not precisely known, but they are thought to be unstable and dissipate over the course of tens or hundreds of millions of...

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Word of the Day
  • A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.
The word 'pawl' probably comes from a Latin word meaning 'stake'.