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Latest Orbit Stories

2012-09-18 02:28:11

WILMINGTON, Del., Sept. 18, 2012 /PRNewswire/ -- Orbit Research today announced the launch of the second-generation iBill Talking Money Identifier for people who are blind, visually-impaired or deaf-blind. Building upon the success of the revolutionary iBill, the new model provides numerous enhancements in ease of use, while maintaining the groundbreaking features that set the original product apart from the competition. It provides the most convenient and affordable means to identify...

2012-09-13 06:26:52

NEW YORK, Sept. 13, 2012 /PRNewswire/ -- S&P Dow Jones Indices and Deutsche Bank today announced that they have co-branded the offshore renminbi bond index, S&P-DB ORBIT Index, to offer market participants an important measure of the fast growing offshore renminbi (RMB) denominated fixed income market. The co-branded rules-based index is based on Deutsche Bank's existing Offshore Renminbi Bond Index Tracker (DB ORBIT), the first tradeable market benchmark index to provide exposure to...

Kepler-30 Distant Solar System Similar To Our Own
2012-07-26 06:01:50

Lee Rannals for redOrbit.com - Your Universe Online Astronomers have used NASA's Kepler to help spot another planetary system that has its planets neatly aligned, similar to our own Solar System. The study shows the trio of planets orbiting the star within one degree, relative to each other, and relative to the star's equator, showing a sense of geometry in its alignment. “In our solar system, the trajectory of the planets is parallel to the rotation of the sun, which shows...

Gravity Satellite Will Benefit Future Missions
2012-07-20 15:21:31

ESA´s GOCE satellite is not only mapping Earth´s gravity with unrivalled precision, but is also revealing new insight into air density and wind in space. This additional information is expected to improve the design and operation of future Earth observation missions. Most satellites orbit Earth higher than 400 km. Lower than that and atmospheric drag causes them to slow down quickly and reenter the atmosphere prematurely. This posed a problem for the designers of the GOCE...

Vastly Different Planets Found Closely Orbiting Same Star
2012-06-22 04:33:13

Researchers working on NASA's Kepler Mission have discovered an unlikely pair of planets -- one similar to our planet, and the other roughly the size of Neptune -- locked in a surprisingly close orbit around a distant star located more than a thousand light years from Earth. The work, which was led by Joshua Carter of the Harvard-Smithsonian Center for Astrophysics (CfA) and University of Washington Associate Professor of Astronomy Eric Agol, discovered that the smaller planet, which was...

Image 2 - Gravity Reveals Previously Unseen Planet
2012-05-11 03:28:40

More than a 150 years ago, before Neptune was ever sighted in the night sky, French mathematician Urbain Le Verrier predicted the planet's existence based on small deviations in the motion of Uranus. In a paper published today in the journal Science online, a group of researchers led by Dr. David Nesvorny of Southwest Research Institute has inferred another unseen planet, this time orbiting a distant star, marking the first success of this technique outside the solar system. Using a...

'Supermoon' Expected This Weekend
2012-05-05 15:05:08

The biggest and brightest full moon of the year will occur this weekend. An estimated 16% brighter than normal, this spectacular ℠Supermoon´ will be visible in the night sky on Saturday (May 5) at 11:35 p.m. EDT, according NASA. Click here for video. The scientific term for the phenomenon is "perigee moon." Full Moons vary in size because of the oval shape of the Moon's orbit. The Moon follows an elliptical path around Earth with one side ("perigee") about 50,000 km closer than...

2012-04-05 10:20:38

BOULDER, Colo., April 5, 2012 /PRNewswire/ -- The Ball Aerospace & Technologies Corp. Kepler Mission for NASA will continue its mission following a program extension through 2016. (Photo: http://photos.prnewswire.com/prnh/20120405/LA83355) Ball Aerospace is the mission prime contractor for Kepler, designed to search for Earth-size planets around other stars. Ball Aerospace built the photometer and spacecraft, and managed system integration and test for the NASA Ames Research Center and...

Working Models For Phobos Gravitational Fields Updated
2012-03-05 05:05:42

Phobos is the larger and closer of the two natural satellites of Mars. Despite decades of Martian exploration, we still know very little about Phobos. Many fundamental properties of this small potato-shaped body stay vague, for example, its gravitational field. SHI Xian and coauthors from Shanghai Astronomical Observatory and Technical University Berlin recently updated working models for the gravitational field of Phobos. Their work, entitled "Working models for the gravitational field of...

A New Take On Planetary Accretion
2012-02-29 09:39:21

The prevailing model for planetary accretion, also called fractal assembly, and dating back as far as the 18th century, assumes that the Solar System´s planets grew as small grains colliding chaotically, coalescing into bigger ones, colliding yet more until they formed planetesimals. The planetesimals then collided until they formed planets as varied as the Earth and Jupiter. The model assumes that this occurred in an extremely hot (as high as 1,600 degrees Celsius) environment for...


Latest Orbit 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_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...

8_d7f84ec36dbfda23aff1a01e00a4b5e62
2004-10-19 04:45:44

Kepler's Laws of Planetary Motion -- The astronomer Johannes Kepler's main contribution to astronomy was his three laws of planetary motion. Kepler found these laws empirically by studying extensive observations recorded by Tycho Brahe. He found the first two laws in 1609 and the third one in 1618. Isaac Newton was later able to derive the laws from his laws of motion and gravity, thereby producing strong evidence in favor of Newton's inverse-square gravitational law. Kepler's First...

6_15cc05865f89c4801c5ff2a85d74a93c2
2004-10-19 04:45:42

Orbit -- An orbit is the path that an object makes around another object under the influence of some force. The classical example is that of the solar system, where the Earth, other planets, asteroids, comets, and smaller pieces of rubble are in orbit around the Sun; and moons are in orbit around planets. These days, many artificial satellites are in orbit around the Earth. Understanding orbits There are a few common ways of understanding orbits. -- As the object moves, it...

6_e1c9b89b48eaf2af7055b7bbebf1a19c2
2004-10-19 04:45:41

Escape Velocity -- An escape velocity is the minimum speed at which an object without propulsion can move away from a source of a gravitational field indefinitely if there is no friction. This definition may need modification for the practical problem of two or more sources in some cases. In any case, the object is assumed to be a point with a mass that is negligible compared with that of the source of the field, usually an excellent approximation. It is commonly described as the speed...

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