Gravitational field
hideA gravitational field is a model used within physics to explain how gravity exists in the universe. In its original concept, gravity was a force between point masses. Following Newton, Laplace attempted to model gravity as some kind of radiation field or fluid, and since the 19th century explanations for gravity have usually been sought in terms of a field model, rather than a point attraction.
In a field model, rather than two particles attracting each other, the particles distort spacetime via their mass, and this distortion is what is perceived subjectively as a "force". In fact there is no force in such a model, rather matter is simply responding to the curvature of spacetime itself.
For more information about Gravitational field, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with gravity field
GOCE delivering data for best gravity map ever (w/ Video)
Space & Earth / Space Exploration
Sep 30, 2009 |
4.8 / 5 (10) |
3
(PhysOrg.com) -- Following the launch and in-orbit testing of the most sophisticated gravity mission ever built, ESA’s GOCE satellite is now in ‘measurement mode’, mapping tiny variations in Earth’s gravity ...
New look at gravity data sheds light on ocean, climate
Space & Earth / Earth Sciences
Aug 27, 2009 |
5 / 5 (4) |
1
A discovery about the moon made in the 1960s is helping researchers unlock secrets about Earth's ocean today.
Mini Gradiometer Could Map Other Planets' Gravity Fields
Space & Earth / Space Exploration
Aug 10, 2009 |
4.3 / 5 (6) |
1
(PhysOrg.com) -- Although it may seem like gravity is the same everywhere on the Earth, it actually varies a small amount from place to place. Factors such as mountains, ocean trenches, and interior density ...
GOCE satellite achieves drag-free perfection (w/Videos)
Space & Earth / Space Exploration
May 26, 2009 |
4.8 / 5 (19) |
11
(PhysOrg.com) -- ESA's gravity mission GOCE has achieved a first in the history of satellite technology. The sophisticated electric propulsion system has shown that it is able to keep the satellite completely ...
GOCE's 'heart' starts beating
Space & Earth / Space Exploration
Apr 08, 2009 |
5 / 5 (3) |
0
GOCE's highly sensitive gradiometer instrument has been switched on and is producing data. Forming the heart of GOCE, the gradiometer is specifically designed to measure Earth's gravity field with unprecedented ...
GOCE satellite: Critical operations ongoing
Space & Earth / Space Exploration
Mar 19, 2009 |
not rated yet |
0
(PhysOrg.com) -- After liftoff 17 March, ESA's GOCE spacecraft is performing very well, having achieved an extremely accurate injection altitude of 283.5 km, just 1.5 km lower than planned. The Mission Control ...
Earth Explorer mission GOCE launches
Space & Earth / Space Exploration
Mar 17, 2009 |
5 / 5 (3) |
0
This afternoon, the Gravity field and steady-state Ocean Circulation Explorer (GOCE) satellite developed by the European Space Agency (ESA) was lofted into a near-Sun-synchronous, low Earth orbit by a Rockot ...
Launch of European gravity probe delayed
Space & Earth / Space Exploration
Mar 16, 2009 |
2.3 / 5 (3) |
0
The launch of a pioneering European satellite designed to map Earth's gravity field was delayed due to technical problems and will take place Tuesday, Russia's Khrunichev Space Centre said.
GOCE gravity satellite moves to launch pad
Space & Earth / Space Exploration
Mar 11, 2009 |
5 / 5 (3) |
0
(PhysOrg.com) -- With liftoff just five days away, ESA's GOCE spacecraft - encased in the protective half-shells of the launcher fairing - has been transported from the cleanroom and installed in the launch ...
GOCE launch: Mapping the Earth’s gravity as never before
Space & Earth / Space Exploration
Mar 09, 2009 |
5 / 5 (3) |
0
(PhysOrg.com) -- ESA is about to launch the most sophisticated of Earth Observation satellites to investigate the Earth’s gravitational field with unprecedented resolution and accuracy.
NASA Spacecraft Falling For Mars
Space & Earth / Space Exploration
Feb 13, 2009 |
4.3 / 5 (12) |
2
(PhysOrg.com) -- Launched in September of 2007, and propelled by any one of a trio of hyper-efficient ion engines, NASA's Dawn spacecraft passed the orbit of Mars last summer. At that time, the asteroid belt ...
March launch planned for GOCE gravity mission (Video)
Space & Earth / Space Exploration
Feb 04, 2009 |
5 / 5 (1) |
0
(PhysOrg.com) -- ESA is now gearing up to return to Russia to oversee preparations for the launch of its GOCE satellite - now envisaged for launch on 16 March 2009. This follows implementation of the corrective ...
Last-ever look at ESA's gravity satellite GOCE
Space & Earth / Space Exploration
Sep 04, 2008 |
4.4 / 5 (5) |
0
(PhysOrg.com) -- As preparations for the launch of GOCE on 10 September continue on schedule, an important milestone has just been achieved as engineers at the Plesetsk Cosmodrome in northern Russia say farewell ...
GOCE prepares for shipment to Russia
Space & Earth / Space Exploration
Jul 24, 2008 |
not rated yet |
0
Launching in just two months' time, GOCE – now fully reconfigured for launch in September, is currently being prepared for shipment on 29 July 2008 from ESA's test facilities in the Netherlands to the Plesetsk ...
