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Latest Orbit Stories

2011-02-02 12:00:00

WASHINGTON, Feb. 2, 2011 /PRNewswire-USNewswire/ -- NASA's Kepler mission has discovered its first Earth-size planet candidates and its first candidates in the habitable zone, a region where liquid water could exist on a planet's surface.

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2011-02-02 12:20:00

Scientists using NASA's Kepler, a space telescope, recently discovered six planets made of a mix of rock and gases orbiting a single sun-like star, known as Kepler-11, which is located approximately 2,000 light years from Earth.

2011-01-10 12:00:00

WASHINGTON, Jan. 10, 2011, /PRNewswire-USNewswire/ -- NASA's Kepler mission confirmed the discovery of its first rocky planet, named Kepler-10b. Measuring 1.4 times the size of Earth, it is the smallest planet ever discovered outside our solar system.

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2011-01-10 12:20:00

NASA's Kepler mission confirmed the discovery of its first rocky planet, named Kepler-10b.

2010-12-13 11:17:00

PARSIPPANY, N.J., Dec. 13, 2010 /PRNewswire/ -- Trident® sugar free gum, today announced a new addition to the Trident family - Trident Vitality(TM). The new offering includes three blends of sophisticated flavors and inspired ingredients - each with its own twist.

2010-11-03 00:00:39

Dr. Michael Minovitch Announces Findings on His Invention: Gravity Assist Multiplanetary Trajectories Dr. Michael A. Minovitch, mathematician, physicist, and inventor, is announcing that his Gravity Propelled Interplanetary Space Travel work is available online.

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2010-10-16 11:38:26

How do astronomers weigh a star that's trillions of miles away and way too big to fit on a bathroom scale? In most cases they can't, although they can get a best estimate using computer models of stellar structure.

2010-09-13 14:36:00

CHICAGO, Sept. 13 /PRNewswire-USNewswire/ -- With the theme "Healthy Habits are Easier than You Think" for its National Dental Hygiene Month (NDHM) celebration this October, the American Dental Hygienists' Association (ADHA), in collaboration with Wm. Wrigley Jr.

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2010-08-02 09:20:00

Global Aerospace Corporation (GAC) announced recently that Dr Kristin L Gates will present a paper on de-orbiting space junk at the August 2 Artificial and Natural Space Debris session of the AIAA Astrodynamics Specialists Conference in Toronto, Ontario, Canada.


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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Word of the Day
ecotone
  • A transitional zone between two communities containing the characteristic species of each.
The word 'ecotone' comes 'eco-' plus a Greek root meaning 'tension'.