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Latest natural satellite Stories

Titan subsurface reservoirs
2014-09-03 07:03:10

European Space Agency The international Cassini mission has revealed hundreds of lakes and seas spread across the icy surface of Saturn's moon Titan, mostly in its polar regions. These lakes are filled not with water but with hydrocarbons, a form of organic compound that is also found naturally on Earth and includes methane. While most of the liquid in the lakes is thought to be replenished by rainfall from clouds in the moon's atmosphere, the cycling of liquid throughout Titan's crust and...

Voyager 2 Triton Map
2014-08-24 04:35:17

redOrbit Staff & Wire Reports - Your Universe Online In honor of the 25th anniversary of Voyager 2’s first up-close look at Neptune and Triton, NASA has “restored” footage obtained by the probe and used it to construct the highest-quality global color map of the moon to date. According to the US space agency, the map was produced by Dr. Paul Schenk, a scientist at the Houston-based Lunar and Planetary Institute (http://www.lpi.usra.edu/) (LPI), and has also been used to...

hunting for exomoons
2014-08-12 08:51:02

University of Texas at Arlington Scientists hunting for life beyond Earth have discovered more than 1,800 planets outside our solar system, or exoplanets, in recent years, but so far, no one has been able to confirm an exomoon. Now, physicists from The University of Texas at Arlington believe following a trail of radio wave emissions may lead them to that discovery. Their recent findings, published in the Aug. 10 issue of The Astrophysical Journal, describe radio wave emissions that...

supermoon summer
2014-07-12 06:22:37

April Flowers for redOrbit.com - Your Universe Online So-called supermoons are not a new phenomenon. However, the supermoon of July 2013 made headlines around the world, prompting a multitude of people to get out under the night sky to see it. The supermoon is approximately 14 percent larger and 30 percent brighter than a "regular" full moon. If the one supermoon of last summer caused such a stir, what will the three this summer cause? All three full moons this summer — July 12,...

Ganymede and Jupiter
2014-07-09 05:38:47

April Flowers for redOrbit.com - Your Universe Online Jupiter's moon Ganymede is the largest satellite in our solar system, approximately three-quarters the size of Mars. Ganymede has two types of terrain on the surface: highly cratered dark regions comprising nearly 40 percent of the surface, with the rest being lightly grooved in intricate patterns. A new study, led by researchers with the Southwest Research Institute (SwRI), reveals that the processes which shaped these ridges and...

pluto and moons
2014-06-14 03:49:09

redOrbit Staff & Wire Reports - Your Universe Online If there are cracks on the ice-covered surface of Charon, an upcoming analysis of those fractures could help determine whether or not the interior of Pluto’s moon was warm enough to have been home to a subterranean ocean of liquid water. In April, research funded by the US space agency and published in the journal Icarus reported how tidally-driven fractures could have formed on the moon if its orbit was previously eccentric....

lunar farside mystery
2014-06-10 04:20:52

John P. Millis, Ph.D. for redOrbit.com - Your Universe Online Despite being the nearest astronomical object to Earth, and the only extraterrestrial site of human visitors, the Moon still contains mysteries that have puzzled scientists for the better part of a century. Perhaps the greatest question surrounding lunar history is its two-faced nature. Due to the mutual gravitational interaction of the Earth-Moon system, the giant satellite is tidally locked with our planet, so we always see...

Skin Care Company Proposes Making The Moon Brighter To Solve Global Energy Crisis
2014-04-17 14:21:45

Brett Smith for redOrbit.com - Your Universe Online Are you trying to unleash an evil scheme at night, but darkness is getting in the way? Why not just BRIGHTEN THE MOON!?!?! (Cue evil laughter) No, that’s not the premise for the next James Bond movie. It’s a new proposal (albeit one that should perhaps not be taken too seriously) by Swedish skin care company Foreo. “Imagine a world where the days last longer and the nights are brighter,” a blog post from the company’s...

Cassini Eyes Possible New Moon Forming In Saturn's Orbit
2014-04-15 08:45:46

Brett Smith for redOrbit.com - Your Universe Online Newly released images from NASA’s Cassini probe have revealed the “birthing” of a tiny moon in orbit around Saturn. The images, taken exactly one year ago on Tuesday, showed evidence of the formation of a tiny icy moon, named “Peggy” – according to a new report on the find in the journal Icarus. The study authors said the discovery could provide information about the formation of Saturn’s other moons as well as the...

Ocean Inside Enceladus
2014-04-04 04:46:48

redOrbit Staff & Wire Reports - Your Universe Online The Cassini spacecraft and Deep Space Network have discovered evidence of a large underground ocean of liquid water on one of Saturn’s moons, suggesting that the satellite could be home to extraterrestrial microbes, according to research appearing in Friday’s edition of the journal Science. Marc Kaufman of National Geographic reports the ocean is located between the rocky core and a layer of thick ice on Enceladus , one of...


Latest natural satellite 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...

8_06878c3866cc846df46ffb3d3441c9d92
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...

8_1e2e2011b36872dcb4753873588746382
2004-10-19 04:45:44

Lagrangian Point -- In Lagrangian mechanics, a Lagrangian point (or L-point) is one of five positions in space where the gravitational fields of two bodies of substantial but differing mass combine to form a point at which a third body of negligible mass would be stationary relative to the two bodies. Bodies at the L-point will not move relative to the parent bodies if they are not perturbed by other gravitational forces. They are sometimes also referred to as libration points. The...

6_07e7808819d3a0e0b1e9459490122f2b2
2004-10-19 04:45:42

Planet -- A planet is a body of considerable mass that orbits a star and that doesn't produce energy through nuclear fusion. Until recently, only nine were known (all of them in our own Solar system). As of the end of 2002 over 100 are known, with all of the new discoveries being extrasolar planets. Astronomers often call asteroids minor planets, and call the larger planetary bodies (those which are commonly called planets) major planets. Planets within the solar system can be...

4_d5b85752a810083f1f08892ab72b24902
2004-10-19 04:45:41

Lunar Phase -- The lunar phase is an astronomical term referring to the portion of the Moon that is visibly illuminated by the Sun, as seen from Earth. As the Moon orbits the Earth, the relative positions of the Sun, Earth and Moon change. Since the Moon only appears bright due to the Sun's reflected light, only the half of the Moon closest to the Sun is illuminated. Lunar phases are the result of our seeing the illuminated half of the Moon at different angles. The Moon exhibits...

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Word of the Day
vermicular
  • Like a worm in form or movement; vermiform; tortuous or sinuous; also, writhing or wriggling.
  • Like the track or trace of a worm; appearing as if worm-eaten; vermiculate.
  • Marked with fine, close-set, wavy or tortuous lines of color; vermiculated.
  • A form of rusticated masonry which is so wrought as to appear thickly indented with worm-tracks.
This word ultimately comes from the Latin 'vermis,' worm.
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