Mentor.

If your basic physics question isn't … I believe the big bang is a transition point between the phase of contraction of the previous universe, and the expansion of the present universe, in an ongoing cycle. The presence of anything before the big bang cannot be found because all the energy and matter has been converted to our existing universe. Can we? Aug 12, 2008 #3 avant-garde.

These push your feet against the ground and so produce movement. It seems like the good times will go on forever, so feel free to keep on wasting energy.

One key fact about energy is that it can change from one form to another. So what? Universe can't run out of energy, neither of mass. billions and billions of years in hte > > > > > >Usable energy.

And you run on food, which exists thanks to the enormous temperature difference between the Sun and the rest of the universe. > > > > > >Not necessarily. Here is an era of hypothetical theories — why the universe is expanding, etc. But the heat death of the universe is expected to take many billions of years. Energy. r/AskPhysics: A subreddit to draw simple physics questions away from /r/physics. The presence of anything before the big bang cannot be found because all the energy and matter has been converted to our existing universe.

These push your feet against the ground and so produce movement. The most distant X-ray jet in the Universe, from quasar GB 1428, helps illustrate how bright these fantastic objects are.

So the total energy of the universe is zero." Will the Universe Run Out Of Energy? Astrophysicists Alexei Filippenko at the University of California, Berkeley and Jay Pasachoff at Williams College explain gravity's negative energy …

There will still be gravity. 189 0.

Energy. It can take many forms: matter, heat, light, electricity and many others. The theory breaks with the popular idea that expansion is caused by dark energy and suggests energy for expansion would never run out. In it, he predicted how our universe would eventually fade to darkness as the stars run out of energy. Fri, Jun 05, 2020 Subscribe For example when you walk, the muscles in your legs change the chemical energy in your food into a physical force on your bones. > > >>The universe WILL run out of energy eventually,. Certainly no.

19,503 5,730. Quintessentially, a vacuum energy filled universe in balance, changing but always steady, eternal but ever-reborn, is exactly what we observe.” weeasle says: May 12, 2017 at 12:00 AM > > > > > >>future; that's what happens when you're not going to have The Big Crunch. VIDEO 0:56 00:56 Two weeks before his death, Stephen Hawking predicted 'the end of the universe' It is likely that, before it occurs, the galaxies will have already run out of energy. Everything in the Universe is made from energy. Insights Author. The vacuum (space) is supposed to be bubbling with energy. It can take many forms: matter, heat, light, electricity and many others. Well, I meant, can we sustain the universe forever?

Mentor.

Everything in the Universe is made from energy.

For example when you walk, the muscles in your legs change the chemical energy in your food into a physical force on your bones. It will be > > >>a dead void forever after that. Apparently the heat-death scenario says no.

The Mass and energy cant be destroyed, just transformed. The second law of thermodynamics states that the universe is running out of usable energy and if you doubt this, look in the mirror (you’re aging and running down just like everything else).

(2) The universe is expanding. One key fact about energy is that it can change from one form to another. But entropy is patient, and eventually, it’ll make sure there’s no usab…

No real rules; ask away.

Aug 12, 2008 #5 Dale. 29,168 5,477. I believe the big bang is a transition point between the phase of contraction of the previous universe, and the expansion of the present universe, in an ongoing cycle.