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Latest Gravity assist Stories

Cassini spacecraft
2014-08-08 08:19:25

Preston Dyches, NASA Jet Propulsion Laboratory NASA's Cassini spacecraft will execute the largest planned maneuver of the spacecraft's remaining mission on Saturday, Aug. 9. The maneuver will target Cassini toward an Aug. 21 encounter with Saturn's largest moon, Titan. The main engine firing will last about a minute and will provide a change in velocity of 41 feet per second (12.5 meters per second). This is the largest maneuver by Cassini in five years. No other remaining maneuver...

venus express aerobraking
2014-07-30 03:00:26

ESA ESA’s Venus Express spacecraft has climbed to a new orbit following its daring aerobraking experiment, and will now resume observations of this fascinating planet for at least a few more months. The orbit-raising followed a month of aerobraking that saw the spacecraft surf in and out of the atmosphere at altitudes typically between 131 km and 135 km for a couple of minutes on each of its closest approaches to the planet. Before, normal operations involved an elliptical orbit...

NASA's Juno Spacecraft Offers A 'Star Trek' View Of Earth, Moon
2013-12-10 15:19:10

[ Watch the video: Earth and Moon Seen by Passing Juno Spacecraft ] Lee Rannals for redOrbit.com - Your Universe Online When NASA’s Juno spacecraft flew past Earth earlier this fall it provided a one-of-a-kind view of our planet and the moon. Juno flew past Earth on October 9, giving it an 8,000 mile-per-hour boost to help it with its journey to Jupiter. During the flyby, Juno traveled about twice as fast as a typical satellite and was spinning at a rate of about two revolutions...

Juno Flies By Earth On Way To Jupiter
2013-10-08 13:39:54

[ Watch the Video: Juno Spacecraft Earth Flyby Animation ] Lee Rannals for redOrbit.com - Your Universe Online It may seem counter-intuitive to launch a spacecraft on a path that intercepts Earth's orbit, but believe-it-or-not, scientists say it was the best route to Jupiter. On Wednesday, NASA's Juno mission will be passing within about 350 miles of Earth's surface, which will be the closest it's been to our planet since leaving it in August 2011. This technique is similar to a...

Traveling To Hard-to-reach Destinations Made Easier Thanks To NASA Technologist
2013-08-01 08:22:27

NASA Traveling to remote locations sometimes involves navigating through stop-and-go traffic, traversing long stretches of highway and maneuvering sharp turns and steep hills. The same can be said for guiding spacecraft to far-flung destinations in space. It isn't always a straight shot. A NASA technologist has developed a fully automated tool that gives mission planners a preliminary set of detailed directions for efficiently steering a spacecraft to hard-to-reach interplanetary...

Cassini Going Strong 15 Years After Launch
2012-10-16 09:04:52

Brett Smith for redOrbit.com - Your Universe Online As the Cassini spacecraft hurtles around Saturn along its continuing mission, NASA announced the fifteen-year anniversary of the probe´s launch this week. The $3.3-billion mission lifted off the launch pad on October 15, 1997 and has traveled over 3.8 billion miles since – flying past Venus twice and Jupiter once en route to entering orbit around the ringed planet in 2004. The mission has provided a treasure trove of...

MESSENGER Marks 8th Anniversary Since Launch
2012-08-06 09:33:40

John Neumann for redOrbit.com - Your Universe Online Eight years ago this month, in 2004, the MESSENGER space probe was launched on a six-and-a-half year, 4.9-billion mile journey to be the first spacecraft to orbit the planet Mercury. The leisurely cruise included 15 trips around the Sun, a flyby of Earth, two flybys of Venus, and three flybys of Mercury. During its gravity assist swing-by of Earth, on August 2, 2005, Messenger´s cameras captured several hundred images of our...

2012-06-22 12:00:39

MESSENGER will complete its 1,000th orbit of the planet closest to the Sun at 11:22 p.m. EDT tonight. "Reaching this milestone is yet another testimony to the hard work and dedication of the full MESSENGER team that has designed, launched, and operated this highly successful spacecraft," says the mission trajectory lead Jim McAdams of the Johns Hopkins University Applied Physics Laboratory in Laurel, Md. The spacecraft was inserted into orbit around Mercury in mid-March 2011, after...

2012-03-05 04:59:24

MESSENGER successfully completed an orbit-correction maneuver on March 2 to lower its periapsis altitude - the lowest point of MESSENGER's orbit about Mercury relative to the planet's surface - from 405 to 200 kilometers (251 to 124 miles). This is the first of three planned maneuvers designed to modify the spacecraft's orbit around Mercury as science operations transition from MESSENGER's primary orbital mission to its extended mission. MESSENGER's orbit around Mercury is highly...

Juno Spacecraft Refines Path To Jupiter
2012-02-06 09:58:11

NASA's solar-powered Juno spacecraft successfully refined its flight path last Wednesday with the mission's first trajectory correction maneuver. The maneuver took place on Feb. 1. It is the first of a dozen planned rocket firings that, over the next five years, will keep Juno on course for its rendezvous with Jupiter. "We had a maneuver planned soon after launch but our Atlas V rocket gave us such a good ride we didn't need to make any trajectory changes," said Rick Nybakken, Juno project...


Latest Gravity assist Reference Libraries

9_5c04e476a527b2fbd3e32c57addd63822
2004-10-19 04:45:44

Galileo Probe -- The Galileo probe was an unmanned probe sent by NASA to study the planet Jupiter and its moons. Named after the astronomer Galileo Galilei, it was launched on October 18 1989 by the Space Shuttle Atlantis and arrived at Jupiter on December 7 1995. Galileo's launch had been significantly delayed by the hiatus in Space Shuttle launches that occurred after the Space Shuttle Challenger disaster, and new safety protocols that were implemented as a result forced Galileo to use...

9_97b760b54aa7e1f81283511b4e3ada292
2004-10-19 04:45:44

Cassini-Huygens Mission -- The Cassini unmanned space probe is intended to study Saturn and its moons. It was launched on October 15, 1997 and is estimated to enter Saturn's orbit on July 1, 2004. The mission is a joined NASA/ESA project. Cassini's principal objectives are to: -- determine the three-dimensional structure and dynamical behavior of the rings -- determine the composition of the satellite surfaces and the geological history of each object -- determine the nature and...

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
maffling
  • To stammer.
  • Present participle of maffle, to stammer.
  • A simpleton.
The word 'maffle' may come from a Dutch word meaning 'to move the jaws' or a French word meaning 'having large cheeks'.