Relativity Einstein News Today

"Which is more likely? That the universe was designed just for us, or that we see the universe as having been designed just for us?" -Michael Shermer After the end of another fun-filled week, it's time again to take a look at (and respond to) what you've had to say! Over on the main Starts With A Bang blog, we've tackled the following topics:

Depuis de nombreuses années, les cosmologistes s’interrogent sur la forme de l’Univers. Est-ce une sphère ? Un dodécaèdre ? Ou autre chose encore ? Mais certains physiciens pensent qu’il pourrait en réalité avoir une forme encore plus singulière : celle d’un donut. Dans un tel univers fini, il serait possible de voyager en ligne droite et de revenir à notre point de départ, et ainsi de déterminer sa taille. En examinant la lumière du tout début de l’Univers, Thomas Buchert...

Relativity einstein showed that gravity is the warping of space time that means for an observer approaching a massive object like a black hole clocks run more slowly. lets send him on a trip a thought experiment on the basis of special relativity. we dispatch him to a star and bring him back. at a speed close to that of light from his point of view jim needs say 10 years for the trip but meanwhile on earth of 1000 years have passed. so jim has effectively travelled to the future because of his s...