If space is curved, allegedly causing gravity, a question arises

[Robert W]

Claims that space is curved seems to me since I first heard of it to be fiction. I never could get my brain to conceive of space, that is empty areas, could curve.

Now along comes GRACE which claims to measure various areas where gravity differs. So, if on earth gravity is different, how can space curve be the cause?
Read the science report on what GRACE does.
GRACE Mission Overview

The Gravity Recovery and Climate Experiment (GRACE) is a joint partnership between the National Aeronautics and Space Administration (NASA) in the United States and Deutsche Forschungsanstalt für Luft und Raumfahrt (DLR) in Germany [Tapley et al., 2004]. GRACE was selected as the second mission under the NASA Earth System Science Pathfinder (ESSP) Program in May 1997 and launched in March 2002. The accurate maps of time-variable gravity inferred from the GRACE observations have revolutionized the ability to monitor mass variability caused by a variety of geophysical processes, leading to important discoveries that span the Earth sciences. Sources of mass variability measured by GRACE include: changes due to surface and deep currents in the ocean; runoff and ground water storage on land masses; exchanges between ice sheets or glaciers and the ocean; and solid Earth mass changes from earthquakes and glacial isostatic adjustment. Designed for a nominal mission lifetime of five years, GRACE is currently operating in an extended mission phase, and is expected to continue through at least late 2017. The mission consists of two identical spacecraft that fly about 220 km apart in a near-polar orbit with an average mission altitude of about 450 km. GRACE maps Earth's gravity field with accurate measurements of the distance between the two satellites, made possible with the K-band microwave ranging system. The other key components of the instrument suite include GPS receivers for precise satellite positioning, star cameras for attitude determination, and on-board accelerometers for the removal of non-gravitational forces [Mission Project Home Page].

 

[toobfreak]

Claims that space is curved seems to me since I first heard of it to be fiction. I never could get my brain to conceive of space, that is empty areas, could curve.

Now along comes GRACE which claims to measure various areas where gravity differs. So, if on earth gravity is different, how can space curve be the cause?

Space IS curved, it has to be, the slight variations in gravity on earth are just the result of many factors including location (varies distance from center of earth), variations in Earth's magnetic field, and variations in rock density and quality in the crust.

Kinda interesting that there is a gravity anomaly right over where there is war in the ME.

 

[Chuz Life]

Claims that space is curved seems to me since I first heard of it to be fiction. I never could get my brain to conceive of space, that is empty areas, could curve.

Now along comes GRACE which claims to measure various areas where gravity differs. So, if on earth gravity is different, how can space curve be the cause?
Read the science report on what GRACE does.
GRACE Mission Overview

The Gravity Recovery and Climate Experiment (GRACE) is a joint partnership between the National Aeronautics and Space Administration (NASA) in the United States and Deutsche Forschungsanstalt für Luft und Raumfahrt (DLR) in Germany [Tapley et al., 2004]. GRACE was selected as the second mission under the NASA Earth System Science Pathfinder (ESSP) Program in May 1997 and launched in March 2002. The accurate maps of time-variable gravity inferred from the GRACE observations have revolutionized the ability to monitor mass variability caused by a variety of geophysical processes, leading to important discoveries that span the Earth sciences. Sources of mass variability measured by GRACE include: changes due to surface and deep currents in the ocean; runoff and ground water storage on land masses; exchanges between ice sheets or glaciers and the ocean; and solid Earth mass changes from earthquakes and glacial isostatic adjustment. Designed for a nominal mission lifetime of five years, GRACE is currently operating in an extended mission phase, and is expected to continue through at least late 2017. The mission consists of two identical spacecraft that fly about 220 km apart in a near-polar orbit with an average mission altitude of about 450 km. GRACE maps Earth's gravity field with accurate measurements of the distance between the two satellites, made possible with the K-band microwave ranging system. The other key components of the instrument suite include GPS receivers for precise satellite positioning, star cameras for attitude determination, and on-board accelerometers for the removal of non-gravitational forces [Mission Project Home Page].

Even as I agree it is still only a theory. . .

The way I understand it, the curvature of space and time is not the "cause" of gravity.

The curvature of space and time is the "manifestation" of a masses effect on the space and time that immediately surrounds itself.

What we call "gravity" is more of a perspective/ perception of how that curvature in space and time affects objects that are essiantially pulled into those curvatures.

Again, I don't rely on it as anything more than a theory. . . but I do understand the concept enough so that I can't refute it entirely, and I have really tried to do just that.

 

[trevorjohnson83]

bending and curving is two dimensional, a 3d pattern of gravity isn't bending at all.

 

[San Souci]

Claims that space is curved seems to me since I first heard of it to be fiction. I never could get my brain to conceive of space, that is empty areas, could curve.

Now along comes GRACE which claims to measure various areas where gravity differs. So, if on earth gravity is different, how can space curve be the cause?
Read the science report on what GRACE does.
GRACE Mission Overview

The Gravity Recovery and Climate Experiment (GRACE) is a joint partnership between the National Aeronautics and Space Administration (NASA) in the United States and Deutsche Forschungsanstalt für Luft und Raumfahrt (DLR) in Germany [Tapley et al., 2004]. GRACE was selected as the second mission under the NASA Earth System Science Pathfinder (ESSP) Program in May 1997 and launched in March 2002. The accurate maps of time-variable gravity inferred from the GRACE observations have revolutionized the ability to monitor mass variability caused by a variety of geophysical processes, leading to important discoveries that span the Earth sciences. Sources of mass variability measured by GRACE include: changes due to surface and deep currents in the ocean; runoff and ground water storage on land masses; exchanges between ice sheets or glaciers and the ocean; and solid Earth mass changes from earthquakes and glacial isostatic adjustment. Designed for a nominal mission lifetime of five years, GRACE is currently operating in an extended mission phase, and is expected to continue through at least late 2017. The mission consists of two identical spacecraft that fly about 220 km apart in a near-polar orbit with an average mission altitude of about 450 km. GRACE maps Earth's gravity field with accurate measurements of the distance between the two satellites, made possible with the K-band microwave ranging system. The other key components of the instrument suite include GPS receivers for precise satellite positioning, star cameras for attitude determination, and on-board accelerometers for the removal of non-gravitational forces [Mission Project Home Page].

Space is nothingness. Uncle Albert made a brilliant theory on False Data. His observation tools were primitive. Three factors make it SEEM to curve--Gravity ,Inertia , and velocity. The "Red Shift" is merely Dopplering. The Lorenz-Fitzgerald Contraction is merely Entropy slowing down due to Velocity moving through Force Fields. Simultaneous happenings DO happen-- And the COSMOS is infinite.

 

[BackAgain]

bending and curving is two dimensional, a 3d pattern of gravity isn't bending at all.

I recently saw a piece (God knows where I saw it) that addressed that concern. 3D is subject to bending.

Think about an area of space as being surrounded by invisible walls. The mass in the center of that “cube” would cause all those “walls” to bend a bit inward. Now, the “planes” of those 4 walls (as well as the ceiling and floor) would be concave, bending toward the mass.

This ^ image is not the one I had in mind. But it sort of works. I asked ChatGPT to illustrate the concept and this is the first result.