A photon is an elementary particle, the quantum of light and all other forms of electromagnetic radiation. It is the force carrier for the electromagnetic force, even when static via virtual photons.he energy of a system that emits a photon is decreased by the energy of the photon as measured in the rest frame of the emitting system, which may result in a reduction in mass in the amount. Similarly, the mass of a system that absorbs a photon is increased by a corresponding amount.
THE SOLAR SYSTEM WIKI. Pluto. 134340 Pluto, more commonly known simply as Pluto, is the second-largest known dwarf planet in the Solar System, and the tenth largest observed body directly orbiting the Sun. It orbits between 29 and 49 AU from the Sun, and was the first Kuiper Belt object (KBO) to be discovered.
Uranus, which was discovered by Sir William Herschel Prior to the invention of the telescope, the only known planets were Mercury, Venus, Earth, Mars, Jupiter, and Saturn.Ura â¦ nus was the first planet discovered by telescope.46 people found this useful.ercury, Venus, Mars, Jupiter and Saturn have been known, or at least seen since man first looked up into the sky. Uranus was also visible with the naked eye, but was probably â¦ not recognised as a planet by our early observers.  With the invention of telescopes, other planets were later discovered.