Where did the matter and energy come from?

This is the meter-mass equivalent. Its conversion factor is kg=7.424×10^-28m. This is analogous to the meter-time equivalent, sec=2.998×10⁸m. Both serve the purpose of keeping all the units the same in calculations.AbE: Of course, it's not an event horizon unless the mass is tucked into that space. The meter-mass equivalent of the Earth, M_E, is 0.444cm. But were we to dig a hole down to 0.444cm we'd not find ourselves within the event horizon of the Earth. In fact we'd be practically weightless. Edited by lyx2no, : Formating.Edited by lyx2no, : Lurker addendum.

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You are now a million miles away from where you were in space-time when you started reading this sentence.

Been conserved.In a chemical explosion the mass is also been conserved; however, no nucleic bosoms are freed, only photons.

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You are now a million miles away from where you were in space-time when you started reading this sentence.

That isn't what's happening. The good Dr's model for these intents is. A second atom is unnecessary. According to Bohr, electrons orbit about the nucleus, but only in orbits that have angular momentums that are integer multiples of Plank's constant divided by 2π: L_n=nh/2π. When an electron absorbs or emits a photon they gain or lose, respectfully, the energy of that photon. In gaining energy the electron will to jump to a higher energy orbit. (Possibly to a state higher then the atom will be able to sustain and the electron will be shed creating an ion.) If there is an empty lower orbit the electron will spontaneously emit a photon dropping into that orbit. (Everything likes being in the lowest available energy state.) The photo is then free to interact with another electron. If there are few electrons to interact with that photon may zip off to the other side of the Universe. If there are lots of high energy photons about where absorption out paces emission the you get a lot of high angular momentum electrons. It is that they have the potential to fall that gives them the potential energy. The rock in the hand can be dropped to the ground. The rock on the ground can be kicked into a hole. If they are falling they have kinetic energy. The Earth and the rocks are in free fall around the Sun. This would be their kinetic energy. In the case of the Earth's near circular orbit there is little exchange back and forth of its potential and kinetic energy. Halley's comet demonstrates a great exchange back and forth of its potential and kinetic energy having a very elliptical orbit. The potential and kinetic energies are relative. When my reference frame is the little two meter box I react within the rock in my hand has potential energy while the rock on the ground does not. When my reference frame includes a 1000 meter cliff edge both rocks have essentially the same potential energy.

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You are now a million miles away from where you were in space-time when you started reading this sentence.

Yes. Photons are emitted and reabsorbed by electrons. But it's important to remember that an electron's environment dictates the specific energies of the photons that the electron can emit or absorb. A spectrograph shows the pattern of large numbers of photons revealing the environment of these electrons; i.e., 2.725 K hydrogen.No, photons do not requiring a medium to travel. Electrons hinder the travel of photons. That's why c had to be specified in a vacuum.Not chemistry. Chemistry is the interactions of atoms and molecules via electrons. Photons are not reacting with the atom as a whole; only the electrons. However, because the atom or molecule is the environment of the electron, the energies of the associated photons tell us a lot about the atom or molecule as a whole. There is only 1 Halley's comet. Halley's has an extended elliptical orbit with a period of 76 years. At aphelion it is 35 times as far from the Sun as does the Earth and has a huge potential energy and little kinetic energy. At perihelion it is half as far from the Sun as is the Earth and has little potential energy and a hugh kinetic energy. There are hundreds of named comets. Kinetic energy is not being "released". Say you are floating along side the HST with a spanner in hand. Relative to you the HST has a kinetic energy 200 times greater, and the spanner 200 times lesser. Do you notice any energy transfer?

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You are now a million miles away from where you were in space-time when you started reading this sentence.