Quantcast
Last updated on April 17, 2014 at 9:10 EDT

Latest Orbit Stories

How Do You Catch A Satellite?
2014-02-21 10:50:46

ESA Standard space dockings are difficult enough, but a future ESA mission plans to capture derelict satellites adrift in orbit. Part of an effort to control space debris, the shopping list of new technologies this ambitious mission requires is set for discussion with industry experts. ESA’s Clean Space initiative is studying the e.DeOrbit mission for removing debris, aiming to reduce the environmental impact of the space industry on Earth and space alike. Earth's debris halo...

Astronomer Helps Research Team See Misaligned Planets In Distant System
2013-10-17 16:04:40

Iowa State University Using data from NASA's Kepler space telescope, an international team of astronomers has discovered a distant planetary system featuring multiple planets orbiting at a severe tilt to their host star. Such tilted orbits had been found in planetary systems featuring a "hot Jupiter," a giant planet in a close orbit to its host star. But, until now, they hadn't been observed in multiplanetary systems without such a big interloping planet. The discovery is reported in...

2013-10-01 12:29:57

CHICAGO, Oct. 1, 2013 /PRNewswire-USNewswire/ -- The American Dental Hygienists' Association (ADHA) and the Wm. Wrigley Jr. Company proudly announce their third annual collaboration for October's National Dental Hygiene Month (NDHM). National Dental Hygiene Month, with the theme "Brush, Floss, Rinse, Chew," showcases the commitment of ADHA and Wrigley, the makers of Orbit® sugar-free gum, to improving the nation's oral health. "A clean mouth is the first line of defense for a...

Protecting Spacecraft From Space Junk
2013-06-27 16:16:45

Lee Rannals for redOrbit.com - Your Universe Online Researchers developed a numerical algorithm that simulates the shock of orbital debris striking materials that make up a space vehicle's outer defense. Scientists commonly use supercomputers to investigate physical phenomenon that cannot be duplicated in a laboratory environment. By running simulations on these such computers, University of Texas researchers have assisted NASA in the development of ballistic limit curves that predict...

Moon Will Be Super On June 24th
2013-06-22 04:45:01

John P. Millis, Ph.D. for redOrbit.com - Your Universe Online The Moon appears to be in a nearly circular orbit around the Earth. But that word "nearly" means that there are slight variations in its motion across the heavens. As it turns out, the distance from the Earth to the Moon varies by about 30,000 miles. This sounds like a lot, but it only represents about a 6-7 percent deviation from the average distance between the two bodies. On Earth, the difference between when the Moon...

Spanish Team Says Russian Meteorite Originated From Apollo Asteroid Group
2013-02-26 10:01:50

Lawrence LeBlond for redOrbit.com - Your Universe Online The Chelyabinsk meteorite that exploded over Russia´s Ural Mountains region on Friday, February 15, has had its origins mapped by scientists. Initially, albeit wrongfully, some attributed the meteoric event to that of another celestial event that occurred on the same day: the close Earth flyby of asteroid 2012 DA14. After looking at amateur video footage, a group of researchers from Colombia were able to plot out the...

2013-02-26 08:21:53

Pioneering scientists redefine what influences movement in solar system and invite scientists, theorists and solar system experts to comment on the "More than Gravity" thesis LANCASTER, N.Y., Feb. 26, 2013 /PRNewswire/ -- A new theory on the forces that control planetary orbit refutes the 400-year old assumptions currently held by the scientific community. Scientific and engineering experts Gerhard and Kevin Neumaier have established a relationship between solar winds and a quantized...

Binary Star Orbit Shifts Could Force Planetary Ejections
2013-01-07 03:28:35

redOrbit Staff & Wire Reports - Your Universe Online The orbits of distant binary stars can become altered over time, potentially causing violent disruptions in their planetary systems and possibly causing worlds to become scattered or ejected, an international team of astrophysicists has discovered in a new study. According to the researchers, all planetary systems in which one star is orbited by a second, companion star, can be altered by the gravity of the companion star, but...

Planet Found Orbiting Two Stars
2012-10-15 13:37:20

Lee Rannals for redOrbit.com - Your Universe Online A team of international astronomers, along with Planethunters.org volunteers, found the first reported case of a planet orbiting twin suns that in turn is orbited by a second distant pair of stars. Researchers said that only six planets are known to orbit two stars, and none of these are orbited by distant stellar companions. "Circumbinary planets are the extremes of planet formation," said Meg Schwamb of Yale University and lead...

Planetary Systems Compared To Pancakes
2012-10-15 12:14:06

Lee Rannals for redOrbit.com - Your Universe Online Astronomers from UCLA using NASA's Kepler space telescope have determined that most planetary systems are "flatter than pancakes." The team wrote in a paper submitted to the Astrophysical Journal that they developed a computer model of planetary systems and compared them to the properties of Kepler data. They found that the more than 85 percent of planets have inclinations of less than three degrees, making the planetary systems...


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...

More Articles (5 articles) »