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Latest Astrodynamics Stories

'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...

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2011-05-30 07:35:26

A team of researchers from the Royal Institute and Observatory of the Navy (ROA) in Cádiz (Spain) has developed a method to track the movement of geostationary objects using the position of the stars, which could help to monitor space debris. The technique can be used with small telescopes and in places that are not very dark. Objects or satellites in geostationary orbit (GEO) can always be found above the same point on the Equator, meaning that they appear immobile when observed from...

2011-03-18 17:45:00

PHOENIX, March 18, 2011 /PRNewswire/ -- On the evening of March 17, 2011, NASA's MESSENGER spacecraft fired its main engine for 15 minutes to perform a Mercury capture maneuver and became the first spacecraft in history to orbit the innermost planet to the Sun. This event marks the culmination of over six and a half years of interplanetary cruise in an ever-tightening spiral toward Mercury, where MESSENGER performed six gravity-assist planet flybys: one of Earth, two of Venus, and three...

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2011-02-03 12:25:00

A Pentagon report warned that space is so littered with debris that a collision between satellites could set off an "uncontrolled chain reaction" capable of destroying the communications network on Earth. Scientists said that the volume of abandoned rockets, shattered satellites and missile shrapnel in Earth's orbit is reaching a "tipping point" and is now threatening the $250 billion space services industry. The report said that a collision between two satellites or large pieces of space...

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2010-11-10 13:30:00

Space analysts say that China has pulled off a tricky and uncommon feat in space flight, maneuvering one of its satellites to about 300 yards within another while they were orbiting Earth. Some analysts say that this new feat could show China's ability to carry out a hostile act against a rival satellite in space. China has not said why it conducted the August maneuver, but it comes as the nation is ambitiously expanding it space program.  The country's space program is expected to...

2010-11-03 00:00:39

Dr. Michael A. Minovitch, mathematician, physicist, and inventor, is announcing that his Gravity Propelled Interplanetary Space Travel work is available online. Also known as gravity assist, or gravity assist trajectories, this invention launched a new era of exploration and space travel. Los Angeles, CA (PRWEB) November 2, 2010 Space travel and exploration would not be the same without the diligent and innovative work of Dr. Michael A. Minovitch. In 1961, Dr. Minovitch invented gravity...

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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. Dr. Gates will describe GAC's Gossamer Orbit Lowering Device (GOLD) for safe and efficient removal from Low Earth Orbit (LEO) of dangerous space objects. The patented GOLD system concept uses a very large ultra thin balloon envelope...

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2010-07-26 09:45:00

When American space pioneer, Dr Robert L Forward, proposed in 1984 a way of greatly improving satellite telecommunications using a new family of orbits, some claimed it was impossible. But now engineers at the University of Strathclyde's Advanced Space Concepts Laboratory have proved that Forward was right. The late Dr Forward - a renowned physicist who worked in the United States and from his second home in Scotland - believed it was possible to use 'displaced orbits' to deploy more...

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2010-01-28 06:30:00

The major powers of the world are being called upon to clean up space "litter" that is becoming increasingly dangerous for spacecraft, the head of the U.S. Strategic Command said on Wednesday. According to Reuters, former astronaut and Air Force General Kevin Chilton told an Israeli audience that the U.S. has documented more than 15,000 items, including jettisoned rockets, shuttle detritus, and pieces of destroyed satellites floating in space, reported Reuters. "The estimation is that these...

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2009-10-20 10:45:00

ESA's Rosetta comet chaser will swing by Earth on November 13 to pick up orbital energy and begin the final leg of its 10-year journey to the outer Solar System. Several observations of the Earth"“Moon system are planned before the spacecraft heads out to study comet 67/P Churyumov-Gerasimenko. This will be the third Earth swingby, the last of Rosetta's four planetary gravity assists. Closest approach to Earth is expected at 08:45 CET. The swingby will provide exactly the boost Rosetta...


Latest Astrodynamics Reference Libraries

22_438736ec75b9bfaca9b25a90d91dcfaa2
2004-10-19 04:45:44

Autumnal Equinox -- In astronomy, is the equinox at the beginning of autumn in the northern hemisphere: the moment when the sun appears to cross the celestial equator, heading southward. The equinox occurs around September 22-24, varying slightly each year according to the 400 year cycle of leap years in the Gregorian Calendar. In the southern hemisphere, the equinox occurs at the same moment, but at the beginning of spring. There are two conventions for dealing with this: either the...

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
omadhaun
  • A fool; a simpleton: a term of abuse common in Ireland and to a less extent in the Gaelic-speaking parts of Scotland.
This word is partly Irish in origin.