Recent content by Jenny

I read somewhere a funny joke about the expansion of space. (it isn't lame, a clever funny joke) If the atom, the person, the Earth and the Solar system expanded just as the rest of space expanded (ie. space between each elementary particle expanded and the space each elementary particle...

Thanks, that makes a lot more sense now.

Many books say "this model of the universe is infinite in nature" Say the Standard Big Bang Model can be infinite in nature if it has hyperbolic/ flat space. My questions are: 1. how can an infinite universe begin with a finite singularity? 2. a universe with spherical geometry is...

thanks hellfire, just to confirm, the above means that: exapnsion is happening at the same rate as the rate of enlarging of our obvservable universe?

By conservation of momentum.. how can a black hole not rotate? All this mass accrete into it carrying large angular momentum. I ask the same question as Jennifer, black holes are very massive and change the geometry of space. When we measure things, we assume space is flat. We measure things...

Mm... but the things outside the Earth's observable universe isn't outside say... the observable universe of the Crab Nebulae.. that means that if a supernovae went off just beyond the Earth's observable universe but within the Crab Nebulae's observable universe, the supernovae's shockwave may...

sorry to pick out such a small part of your discussion.. but I'm a little confused Redshift used in that sense is the lenghtening of all wavelengths. However, neutrinos are particles without wave properties (right?) so obviously they don't redshift in that sense. However, if neutrinos from a...

Homogenous universe: To tie in expansion: Have you heard of the rubber band 2D analogy of expansion? Imagine that we rre a dot on a rubber band and there are numerous dots on the rubber band with similar spacing between each dot. the rubber band is expanding, we would see every dot moving...