If the Universe is expanding than can the Einstein cosmological constant be constant?

Question

Recent Hubbel observations and conlusion of those observation are they correct?

Answer 1

Yes, because the cosmological constant is a specification of a pressure that's constant in each unit volume of empty space. So it "explains" an expansion over and above the expansion due to the velocity imparted by the Big Bang. Einstein, after some thought, concluded that the CC = 0; in other words, that the expansion of the universe is due only to the initial kick of the Big Bang and is thus slowing down due to gravity. But recent observations (of very distant supernovas) indicate that the expansion is not slowing down, but increasing. This is consistent with a small but positive CC. Other explanations are possible, though. For example, there could be a "real" force exerting the outward pressure ("real" as opposed to the very mysterious constant pressure per unit volume); if this is true, such a force couldn't be one of the four known forces of physics, but would have to be a fifth one, and so has been called "quintessence."

Answer 2

Well I believe that Einstein's theory was that the Universe pretty much stayed the same, or that it has a constant reality. The expansion of the universe obviously implies change, and a growing procedure, which contradicts Einstein's theory.
They say that once the Universe gets too large, a gravitational pull may begin to pull it back together resulting in the elimination of the entire universe. This is called the "big crunch", which is the opposite of the Big Bang theory. These are widely accepted theories and possibilities within the astonomic community, and Einstein's theory has been contradicted.

Answer 3

Einstein added the cosmological constant into his equations due to the erroneous idea that the universe is static (not expanding), something we know today to be false. When the universe was found to be expanding, Einstein took the cosmological constant out, calling it one of his biggest mistakes.

Answer 4

Einstein removed the cosmological constant from his equations once he accepeted the big bang theory. In hindsight, he called it a his own personal "fudge".