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Latest Io Stories

Five Year Anniversary Of Stereo Imaging For NASA's TWINS
2013-06-23 04:12:37

redOrbit Staff & Wire Reports - Your Universe Online This month marks the fifth anniversary of NASA’s Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS) missions, which are stereoscopically imaging the mysterious and dynamic region surrounding Earth known as the magnetosphere, the US space agency announced on Saturday. The TWINS A & B probes were launched on June 15, 2008, and according to NASA, since that time they have been orbiting in widely separated planes so that...

Mysterious Third Radiation Belt Around Earth
2013-06-21 05:07:13

April Flowers for redOrbit.com - Your Universe Online Scientists have long believed that the Van Allen radiation belts, discovered in the Earth’s upper atmosphere in 1958, consisted of two doughnut-shaped rings of highly charged particles. The inner ring is comprised of high-energy electrons and energetic positive ions, and the outer ring of high-energy electrons. This past February in the journal Science, however, a team of scientists reported the surprising discovery of a third,...

Suck It Up! Sun Provides Insight Into How Young Stars Grow
2013-06-21 04:26:50

April Flowers for redOrbit.com - Your Universe Online Our Sun erupted on June 7, 2011, sending tons of hot plasma blasting into space. Some of the plasma fell back to the surface of the Sun, sparking bright flashes of ultraviolet light. A new study from the Harvard-Smithsonian Center for Astrophysics (CfA) examines the dramatic event to provide new insights into how young stars grow by consuming nearby gas. NASA's Solar Dynamics Observatory captured the eruption and subsequent...

Sulfur Aerosol Particles And Climate Change
2013-05-15 04:51:08

Brett Smith for redOrbit.com - Your Universe Online A new study on cloud formation shows that climate change models may have underestimated the cooling effect of sulfur aerosol particles in the atmosphere. These aerosols mitigate greenhouse gases by reflecting sunlight. They also act as seeds for cloud condensation by allowing humidity to accumulate around them — forming droplets and then clouds. To investigate the role of sulfur aerosols in cloud formation and climate change,...


Latest Io Reference Libraries

9_4e0ee555c18ad7f31f4e1417f556ae6a2
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...

9_5c04e476a527b2fbd3e32c57addd63822
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...

4_fc730703fb1423212704a9ca14d177942
2004-10-19 04:45:40

Jupiter's Moon Leda -- Leda ("LEE duh") is the ninth of Jupiter's known satellites and the smallest. Discovered by C. Kowal Date of discovery 1974 Mass (kg) 5.68e+15 Mass (Earth = 1) 9.5047e-10 Equatorial radius (km) 8 Equatorial radius (Earth = 1) 1.2543e-03 Mean density (gm/cm^3) 2.7 Mean distance from Jupiter (km) 11,094,000 Rotational period (days) ? Orbital period (days) 238.72 Mean orbital velocity (km/sec) 3.38 Orbital eccentricity 0.1476 Orbital inclination (degrees)...

4_a34505fa4e67ac355472742562cbda502
2004-10-19 04:45:40

Jupiter's Moon Callisto -- With a diameter of over 4,800 km (2,985 miles), Callisto is the third largest satellite in the solar system and is almost the size of Mercury. Callisto is the outermost of the Galilean satellites, and orbits beyonds Jupiter's main radiation belts. It has the lowest density of the Galilean satellites (1.86 grams/cubic centimeter). Its interior is probably similar to Ganymede except the inner rocky core is smaller, and this core is surrounded by a large icy...

4_aaa5179a0f2215133d1a720eb259e07f2
2004-10-19 04:45:40

Jupiter's Moon Ganymede -- Ganymede is the largest satellite in the solar system with a diameter of 5,268 km (3270 miles). It is larger than Mercury and Pluto, and three-quarters the size of Mars. If Ganymede orbited the Sun instead of orbiting Jupiter, it would easily be classified as a planet. If Ganymede orbited the Sun instead of Jupiter it could be classified as a planet. Like Callisto, Ganymede is most likely composed of a rocky core with a water/ice mantle and a crust of rock and...

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Word of the Day
penuche
  • A fudgelike confection of brown sugar, cream or milk, and chopped nuts.
'Penuche' is a variant of 'panocha,' a coarse grade of sugar made in Mexico. 'Panocha' probably comes from the Spanish 'panoja, panocha,' ear of grain.
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