Speaker
Enrique Gaztanaga
(ICE/CSIC)
Description
Most cosmologists today believed that our universe corresponds to a Big Bang homogeneous (FLRW) metric with an age which is only three times larger than the age of Earth. This seems in agreement with most observations and with the cosmological principle which states that spacetime is homogeneous only in space, but not in time. Recent measurements indicate that our cosmic expansion is dominated by a repulsive cosmological constant $\Lambda>0$. This indicates that we are inside a closed hypersphere, $r
Author
Enrique Gaztanaga
(ICE/CSIC)
