
20191209: The Doomsday Argument
 13:51: ... the answer is maybe: if the universe is closed and has positive curvature then measuring that curvature absolutely will give us the total volume ...
 16:49: In short, there's still significantly more evidence in favour of flatness than positive curvature.


20191202: Is The Universe Finite?
 03:04: We have 1) a universe with positive curvature.
 04:10: ... more gravity, which tends to pull a universe in on itself  it gives positive curvature and closes the universe  making it ...
 06:51: Remember that more energy density tends to introduce positive curvature.
 07:25: They found the range of models that fit the shape of the power spectrum, and for the most part those pointed to positive curvature.
 07:42: The researchers claim a greater than 99% statistical confidence for positive curvature in this analysis.
 10:18: ... new study redid part of the Planck analysis to claim this evidence of positive curvature  which the Planck team had themselves decided wasn’t ...


20190403: The Edge of an Infinite Universe
 02:46: We call that positive curvature.
 03:40: In GR this is antide Sitter space because it’s the “opposite” of the positive curvature de Sitter space.


20190220: Secrets of the Cosmic Microwave Background
 07:42: ... It tells us the total amount of energy in the Universe Energy results in positive curvature due to its positive gravitational effect On the other hand an expanding ...


20190130: Perpetual Motion From Negative Mass?
 07:26: Positive mass causes spacetime to curve inwards – what we call positive curvature.


20160420: Why the Universe Needs Dark Energy
 06:13: This is totally inconsistent with the level of positive curvature we'd expect from an infinitely expanding universe.


20160323: How Cosmic Inflation Flattened the Universe
 01:51: Draw the same triangle on the surface of a sphere, which has what we call positive curvature, and the angles add up to more than 180.


20151007: The Speed of Light is NOT About Light
 11:26: ... number, 18 times the particle horizon, only applies if the universe has positive curvature, making it a hyposphere and the curvature is the maximum that it could ...
