If a cloud begins to contract because of its own gravity, its interior heats up as gravitational energy is converted to heat energy, reaching millions of degrees, and nuclear reactions begin that change one element into another, releasing energy.
32.
After reading that discussion again though, it's possible that the mass of the singularity might exceed the mass of the matter that was actually compressed because the gravitational energy of the matter adds to the mass of the singularity.
33.
In youth a brown dwarf may glow hot from the gravitational energy of the compressing interstellar gases, but if critical mass is not reached and fusion begun, in time it will cool off, leaving a dim glow from residual gravitational energy.
34.
In youth a brown dwarf may glow hot from the gravitational energy of the compressing interstellar gases, but if critical mass is not reached and fusion begun, in time it will cool off, leaving a dim glow from residual gravitational energy.
35.
Its voyage to the Sun began with a sixteen month trip to Jupiter where the planet's gravitational energy was used to fling Ulysses southward out of the orbital plane of the planets and on toward a solar south pole passage in 1994.
36.
Now, we know that for gravitational energy, E = mgh, so when I'm winding it up, I'm providing about 30 Joules of energy over 15 seconds of work-so I'm providing about 2 Joules / second or 2 Watts while I'm cranking it.
37.
He described how all the mass energy which is positive and all the gravitational energy which is negative cancel each other out leaving us with a universe with zero energy . That is how the universe could have begun from zero energy, nothing.
38.
The earth's core is theorized to be a solid, mostly iron, crystal that is extremely hot, due in part to the enormous pressure that it is under from the gravitational energy of all the mass of the planet pushing in to the center.
39.
At the very end of this process, the two objects will reach extreme velocities, and in the final fraction of a second of their merger a substantial amount of their mass would theoretically be converted into gravitational energy, and travel outward as gravitational waves,
40.
In its final moments of spiraling inward and merging, GW150914 released around 3 solar masses as gravitational energy, peaking at a rate of 3.6 watts more than the combined power of all light radiated by all the stars in the observable universe put together.
