This material causes potential wells and hills that are exhibited in the late-time integrated Sachs-Wolfeeffect. The FLRW metric shows that one accepted model of this material would need to have negativepressure. In 2011, the
This material causes potential wells and hills that are exhibited in the late-time integrated Sachs-Wolfeeffect. The FLRW metric shows that one accepted model of this material would need to have negativepressure. In 2011, the Hubble Telescope ruled out a bubble of empty space that was considered analternative to this material. Two proposed forms of this material are quintessence and a type described bythe cosmological constant; those two forms are used in describing a stationary and accelerating universe.For 10 points, name this hypothetical material believed to form the majority of the mass-energy content ofthe universe.
This material causes potential wells and hills that are exhibited in the late-time integrated Sachs-Wolfeeffect.
dark energy [do not accept "dark matter"; prompt on energy]