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Latest Lagrangian point Stories

2fcd1af9677037541f1bf2b779137529
2009-07-03 10:20:00

Last night, the detectors of Planck's High Frequency Instrument reached their amazingly low operational temperature of -273°C, making them the coldest known objects in space. The spacecraft has also just entered its final orbit around the second Lagrange point of the Sun-Earth system, L2. Planck is equipped with a passive cooling system that brings its temperature down to about -230°C by radiating heat into space. Three active coolers take over from there, and bring the...

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2009-06-05 09:45:00

Beginning today, ESA's Planck satellite will carry out a critical mid-course maneuver that will place the satellite on its final trajectory for arrival at L2, the second Lagrange point of the Sun-Earth system, early in July. The maneuver is scheduled to begin at 19:28 CEST on June 5 2009, and will last for up to 30 hours. Planck's main thrusters will conduct repeated 'pulse burns' during this time, switching on then off for 6 seconds every minute. This pulse-burn technique is necessary...

2009-05-21 14:06:58

The European Space Agency says the commissioning of scientific instruments and subsystems aboard its Herschel and Planck spacecraft has started. The two space observatories were lifted into orbit aboard an Ariane 5 rocket last week from the French spaceport at Kourou, French Guiana. Scientists said Herschel and Planck were functioning nominally and are now en route to their final orbits around the second Lagrange point, a spot in space know as L2, approximately 932,000 miles from Earth....

1e01afe493bd3d3ceae2645b958f61c01
2009-05-21 07:55:00

After a perfect injection by the Ariane 5 launcher on May 14, the critical Launch and Early Orbit Phase (LEOP) for Herschel and Planck has started to wind down, while commissioning of the scientific instruments and subsystems on both spacecraft has begun. Herschel and Planck are functioning nominally and are now en route to their final orbits around the second Lagrange point of the Sun-Earth system (L2), a point in space 1.5 million kms from Earth on the night-side.  The additional...

2009-05-14 09:13:22

The European Space Agency's Herschel and Planck satellites went into space Thursday aboard an Ariane 5 rocket from the French spaceport in French Guiana. The dual space telescopes were headed toward a spot called L2 -- the second Lagrange point -- where they will operate in different orbits. L2 is a local gravitational point that is fixed in the Earth-sun system and is situated on Earth's night side, the ESA said. It is an excellent location for both Herschel and Planck; it allows them to...

edba5b4d3a31ebde0e1d4a2302d5f2b91
2009-05-11 12:35:00

There's a buzz in the Main Control Room as the launch of Herschel and Planck gets closer. The two satellites are scheduled to launch together at 15:12 CEST, May 14, on an Ariane 5 from ESA's Spaceport in Kourou, French Guiana. Several critical events are planned leading up to and after launch. After launch, Herschel and Planck will be headed to L2, the second Lagrange point of the Sun-Earth system, where they will operate from independent orbits. L2 is a local gravitational point that is...

2009-05-05 10:59:00

WASHINGTON, May 5 /PRNewswire-USNewswire/ -- Two missions to study the cosmos, the Herschel and Planck spacecraft, are scheduled to blast into space May 14 aboard the same Ariane 5 rocket from the Guiana Space Center in French Guiana. The European Space Agency, or ESA, leads both missions with significant participation from NASA. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO ) "The missions are quite different, but they'll hitch a ride to space together," said Ulf...

2009-04-10 11:51:00

GREENBELT, Md., April 10 /PRNewswire-USNewswire/ -- Two identical NASA spacecraft are preparing to enter a point in the universe that may eventually answer the question of how our moon was born. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) The spacecraft duet, called Solar Terrestrial Relations Observatory, or STEREO, are nearing a zone known as the Lagrangian points. At these points, the gravity of the sun and Earth combine to form gravitational wells where asteroids...

ccf842562333ebd91ba9d0060d661e231
2009-04-10 07:25:00

NASA's twin STEREO probes are entering a mysterious region of space to look for remains of an ancient planet which once orbited the Sun not far from Earth. If they find anything, it could solve a major puzzle--the origin of the Moon. "The name of the planet is Theia," says Mike Kaiser, STEREO project scientist at the Goddard Space Flight Center. "It's a hypothetical world. We've never actually seen it, but some researchers believe it existed 4.5 billion years ago"”and that it collided...

5c91c9e4d00406cf00f33f4099672b851
2006-06-16 09:38:26

Washington, DC -- Three new objects locked into roughly the same orbit as Neptune -- called "Trojan" asteroids -- have been found by researchers from the Carnegie Institution's Department of Terrestrial Magnetism (DTM) and the Gemini Observatory in Hilo, Hawaii. The discovery offers evidence that Neptune, much like its big cousin Jupiter, hosts thick clouds of Trojans in its orbit, and that these asteroids probably share a common source. It also brings the total of known Neptune Trojans...


Latest Lagrangian point Reference Libraries

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_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...

4_91f495f26b55d202d8a0236841ee6c472
2004-10-19 04:45:41

Saturn's moon Helene -- Helene is a moon of Saturn, discovered by Laques and Lecacheux in 1980 from ground-based observations. It is co-oribtal with Dione and located in its leading Lagrangian point (L4) and hence is sometimes referred to as "Dione B". ----- Orbital radius: 377,400 km Diameter: 33 km (36 x 32 x 30) Mass: Unknown Orbital period: 2.7369 days Orbital inclination: 0.2 ----- NASA Learn more on this topic from eLibrary here:

4_74a1b551e5bb9dcb6b3d45ccc56067ec2
2004-10-19 04:45:41

Saturn's moon Calypso -- Calypso is a moon of Saturn discovered by Pascu, Seidelmann, Baum and Currie in 1980 from ground-based observations. Calypso is co-orbital with the moon Tethys, and resides in Tethys' trailing Lagrangian point (L5). The moon Telesto resides in Tethys' leading Lagrangian point. ----- Orbital radius: 294,660 km Diameter: 26 km (34 x 22 x 22) Mass: Unknown Orbital period: 1.8878 days Orbital inclination: 0 ----- NASA Learn more on this...

Telesto (Saturn Moon)
2004-10-19 04:45:41

Telesto is a small Trojan moon of the sixth planet from the sun, Saturn. Telesto, which was discovered in 1980 by Smith, Reitsema, Larson and Fountain, is one of around 200 natural satellites in Saturnian orbit. It is one of only 62 moons that have a secure orbit, and only one of 53 named moons orbiting the ringed planet. Telesto was officially designated S/1980 S 13 and was officially named in 1983 after the Greek sea goddess of the same name. This moon is also designated as Saturn XIII...

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Word of the Day
monteith
  • A large punch-bowl of the eighteenth century, usually of silver and with a movable rim, and decorated with flutings and a scalloped edge. It was also used for cooling and carrying wine-glasses.
  • A kind of cotton handkerchief having white spots on a colored ground, the spots being produced by a chemical which discharges the color.
This word is possibly named after Monteith (Monteigh), 'an eccentric 17th-century Scotsman who wore a cloak scalloped at the hem.'
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