- last post: 01.01.0001 12:00 AM PDT
Posted by: v8juice
Posted by: sarge117
Wow you guys know your stuff lol. I was able to follow a good part of what you guys were talking about, but I only have grade 9 science right now lol. But I'd say that there's still a lot to be learned about forces and energy etc. For example, scientists know, due to the doppler effect (the effect in which wavelengths are either shortened of lengthened because their source is moving), that the universe is expanding, and that galaxies are moving outward in all directions. So you'd think that because of gravity the universe would be slowing down or stopping and begginning to collapse inwards, but it's not. Something is pushing the universe outward against the forces of gravity, dark energy (dark signifying the unknown).
Interesting stuff.
Really? I never knew that. That's rather interesting, especially concerning our little solar system, since the sun is expanding slowly and getting ready to explode in another couple hundred thousand lifetimes, one would think that it's gravitational effect would also increase, thus drawing all the planets in closer to it, shortening the orbits, shortening the year, even, given enough time.
I don't know, space was never my specialty. Just kind of rambling on here. I prefer investigating stuff that happens on earth.
Edit: Sorry, it's late, the length of the orbits is the same thing as the length of the year, just in different terms, find myself getting a bit too wordy as it gets later
Gravity is determined by an object's mass, not volume. Since the sun wouldn't be gaining mass, instead, blowing it off, the gravity would slowly decrease.