This data has now been declassified because
gravity data from civilian missions (e.g. ESA's ERS - 1) made the continued classification of it pointless.
In this study, researchers of the Royal Observatory of Belgium show
gravity data from recent Cassini flybys can be explained if Dione's crust floats on an ocean located 100 kilometers below the surface.
The discovery is thanks to
gravity data from a flyby by NASA's Cassini spacecraft, which also discovered the subsurface oceans of two others of Saturn's moons, Titan and Enceladus.
The first such map, from just 89 days of in - flight testing, is 10 times better than 3 decades of
gravity data from all other sources combined, says aerospace engineer Byron Tapley of the University of Texas, Austin, leader of the U.S. GRACE team.
Virendra Tiwari from the National Geophysical Research Institute in Hyderabad, India, and colleagues used
gravity data from the GRACE satellite to monitor the loss of continental mass around the world since 2002.
Not exact matches
Benoit and Ebinger also made use of the North American
Gravity Database, a compilation of open - source
data from the U.S., Canada, and Mexico.
The study uses
data from two NASA missions — Operation IceBridge, which measures ice thickness and
gravity from aircraft, and Oceans Melting Greenland, or OMG, which uses sonar and
gravity instruments to map the shape and depth of the seafloor close to the ice front.
Millan, a UCI graduate student researcher in Earth system science, and his colleagues analyzed 20 major outlet glaciers in southeast Greenland using high - resolution airborne
gravity measurements and ice thickness
data from NASA's Operation IceBridge mission; bathymetry information
from NASA's Oceans Melting Greenland project; and results
from the BedMachine version 3 computer model, developed at UCI.
But experimental
data from the flume lab show that
gravity does not facilitate sediment transport in the expected manner.
WASHINGTON, D.C. — A team of physicists has used
data from GPS satellites to hunt for dark matter, the mysterious stuff whose
gravity appears to hold galaxies together.
The scientists relied on
data from the pair of GRACE satellites — NASA's
Gravity Recovery and Climate Experiment orbiters launched in 2002 — that measure subtle changes in Earth's gravitational field, which are often the result of shifting water, whether on the surface or deep beneath it.
Evidence of three new basins comes
from gravity data collected by NASA's GRAIL mission in 2012 (new basins circled in black, redder colors indicate a greater gravitational tug).
Maps of the moon generated
from gravity data gathered by the GRAIL spacecraft include three previously undiscovered lunar basins, Bartels - Voskresenskiy, Copernicus - H and Asperitatis.
By comparing the
data streaming in to models of different potential sources, researchers can pick out the voice of cosmic
gravity from the static of earthly mumblings.
Instead the team used
data from a satellite called the
Gravity Recovery and Climate Experiment (GRACE), which measures changes in Earth's gravitational field that are caused by changes in mass.
To work out why the drift changed direction, Chen's team used
data from NASA's GRACE satellite, which measures changes in Earth's
gravity field.
The X-ray
data also indicates that radiation
from material surrounding this black hole has consistently surpassed the so - called Eddington limit, defined by a balance between the outward pressure of radiation
from the hot gas and the inward pull of the
gravity of the black hole.
The extraction of the tide
from the LOLA
data would have been impossible without the
gravity model of the moon provided by the GRAIL mission,» said David Smith, the principal investigator for LRO's LOLA instrument and the deputy principal investigator for the GRAIL mission.
Using GPS, InSAR,
gravity, seismic reflection, and geological
data, Marcos Moreno and colleagues
from GFZ as well as Chile show that the 2016 earthquake occurred at the deep boundary of a persistent asperity on the interface between the subducting Nazca and overriding South American plates, where both plates are coupled and not sliding past each other in spite of the high convergence velocity of 68 mm / year.
This new gene expression
data therefore provides additional evidence that the altered behavior of bacteria in space results
from decreased
gravity driving reduced extracellular transport of molecules.
Maria Zuber Professor of Geophysics and Planetary Science, MIT Using laser ranging,
gravity measurements, and
data from spacecraft, Zuber maps surface features and probes the interior of Mars, Venus, Jupiter's moons, and our own moon.
Researchers used two methods to track groundwater levels, traditional water balance estimates — which take into account surface water inflow like rainfall and snow melt, soil moisture capacity and evapotranspiration — and
data from NASA's twin satellite system called GRACE (
Gravity Recovery and Climate Experiment).
To work out why the pole changed direction, Chen's team used
data from NASA's GRACE satellite, which measures changes in Earth's
gravity field over time.
Hydrologist J.T. Reager and colleagues
from the University of California, Irvine looked at
data from GRACE, a duo of NASA satellites that detect small changes in Earth's
gravity.
After tinkering with Einstein's general relativity equations to put in a new correction factor, he used the
data from the experiment to calculate
gravity's speed: 1.06 times that of light, give or take an error of 20 percent.
Last November,
data from a balloon - borne particle detector circling the South Pole revealed a dramatic excess of high - energy particles
from space — a possible sign of dark matter, the mysterious substance whose
gravity seems to hold our galaxy together.
Data from NASA's orbiting Fermi Gamma - ray Space Telescope puts a crimp in particle theorists» favored explanation of the mysterious stuff whose
gravity holds the galaxies together, ruling out a hefty range of masses for the hypothesized particles, a team announced this week.
The
data compiled
from the survey show that something indeed is distorting the speed of the galaxies beyond the mere effects of
gravity.
The glaciologist was combing through satellite and GPS
data to see what small, local effects could be clouding satellite measurements of larger changes in Earth's
gravity from ice loss.
The researchers used
data from NASA's
Gravity Recovery and Climate Experiment (GRACE) satellites to map monthly changes in mass within the watershed
from 2003 to 2012.
To check their model forecast, as the dry season has gotten underway, the researchers have compared their initial forecast with observations coming in
from NASA's precipitation satellite missions» multisatellite datasets, as well as groundwater
data from the joint NASA / German Aerospace Center
Gravity Recovery and Climate Experiment (GRACE) mission.
It's not the result physicists were hoping for, but
data from a new experiment may put an end to a contentious subplot in the search for dark matter, the mysterious stuff whose
gravity binds the galaxies.
Race
data also show that Bolt sprang
from the starting blocks with an acceleration of 9.5 meters per second squared — that's almost 0.97 g, the acceleration due to Earth's
gravity — and was churning out a whopping 2.6 kilowatts of power (3.5 horsepower) less than 1 second later.
Jay Melosh at Purdue University in Indiana and his colleagues were searching
data from NASA's
Gravity Recovery and Interior Laboratory (GRAIL) mission for traces of underground lava tubes when they came across two large buried craters.
They also used
data from the GRACE satellite
gravity mission to determine that the acceleration is largely being driven by melting ice in Greenland and Antarctica.
An analysis of
gravity and topography
data from Saturn's largest moon, Titan, has revealed unexpected features of the moon's outer ice shell.
OU researchers combined the surface water area
data with the land water storage
data from NASA's
Gravity Recovery and Climate Experiment during 2002 to 2016 to investigate the
data dynamics in severe drought and pluvial years.
The French scientific team benefited
from data from NASA's twin
Gravity Recovery and Climate Experiment satellites, launched in 2002, that measure ocean mass and water storage variations on land.
Computer simulations derived
from Hubble's
data show that it will take an additional two billion years after the encounter for the interacting galaxies to completely merge under the tug of
gravity and reshape into a single elliptical galaxy similar to the kind commonly seen in the local universe.
For example, in March 2016 NASA released an improved
gravity map of Mars that in part used
data from MGS.
Bolton says that
data, coupled with measurements of the planet's
gravity field, differing
from projections points toward a planet whose interior has more complexity and motion than anyone would have expected.
«By watching the stars move over 20 years using very precise measurements taken
from Keck Observatory
data, you can see and put constraints on how
gravity works.
From the gravity data we received from the Voyager flybys in 1986 (Uranus) and 1989 (Neptune), and from watching how the Uranian rings move, it appears that the planets are not simple, three - layer objects, with the densest rock in the center, surrounded by ocean with a hydrogen / helium atmosphere above it
From the
gravity data we received
from the Voyager flybys in 1986 (Uranus) and 1989 (Neptune), and from watching how the Uranian rings move, it appears that the planets are not simple, three - layer objects, with the densest rock in the center, surrounded by ocean with a hydrogen / helium atmosphere above it
from the Voyager flybys in 1986 (Uranus) and 1989 (Neptune), and
from watching how the Uranian rings move, it appears that the planets are not simple, three - layer objects, with the densest rock in the center, surrounded by ocean with a hydrogen / helium atmosphere above it
from watching how the Uranian rings move, it appears that the planets are not simple, three - layer objects, with the densest rock in the center, surrounded by ocean with a hydrogen / helium atmosphere above it all.
This global map of the
gravity or Mars is the best one yet made and was created
from 16 years» worth of
data from three NASA orbiters around the Red Planet.
The new map of Mars»
gravity was generated by scientists using
data from three NASA spacecraft — the Mars Global Surveyor, Mars Odyssey and Mars Reconnaissance Orbiter — which mapped the Red Planet
from orbit.
With the help of computer simulations and observations of the
data coming
from the probe, they determined that it could be
gravity waves.
GIMBLE.GGCMG2 contains line based
data relating to
gravity disturbance, processed
from raw acceleration and position
data by propriety software
from Gravimetric Technologies and Novatel.
(Phys.org)-- The research team working with the LIGO project has proposed that the
data gleaned
from the discovery of
gravity waves last year allows for calculating the likely level of cosmic background noise due to gravitational...
The international science team, which included researchers
from the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) and UC Berkeley, analyzed
data from past sky surveys using sophisticated image - recognition technology to home in on the
gravity - based effects that identify the shapes of these filaments.
Here we present a sample of 10,341 likely red - clump stars (RC)
from the first two years of APOGEE operations, selected based on their position in color - metallicity - surface -
gravity - effective - temperature space using a new method calibrated using stellar - evolution models and high - quality asteroseismology
data.