Question:

Since the Hubble constant is HC=v/d or 71km/s/megaparsec and new research has added : and expanding?

by Guest44925  |  earlier

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also i read dark energy may be driving the acceleration(of the expansion of the universe) and defying gravity's pull.

is it likely that gravity=rate/time

please explain in simple terms

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  1. The value of the Hubble constant indicates that the Universe is *currently* expanding. The question is will it continue to do so in all eternity?

    The expansion is due to the initial explosion, the Big Bang, and is counteracted by the gravity due to the mass in the Universe. If the quantity of mass is sufficiently large then gravity will stop the expansion one day in the far future and inverse the movement.

    However, a lot of things indicate that there is not enough mass to do so. But the story is more complex than that because the last then years astronomers have figured out that a lot of the mass of the Universe is invisible. And we don't know what it is the nature of this dark mass.

    Worse, recent observations indicate that the universe appears to be expanding at an accelerating rate. The most popular explanation is the existence of dark energy, a hypothetical form of energy that permeates all of space and tends to increase the rate of expansion of the Universe. In the standard model of cosmology, dark energy currently accounts for 73% of the total mass-energy of the universe.

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