SOLAR SYSTEM

Detailed explanation-1: -Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust.

Detailed explanation-2: -When our Sun approaches its red giant phase some 6 billion years from now, it will run out of fuel in its core. As hydrogen fusion slows, the core once again begins to contract.

Detailed explanation-3: -By studying several things, mostly meteorites, and using radioactive dating techniques, specifically looking at daughter isotopes, scientists have determined that the Solar System is 4.6 billion years old.

Detailed explanation-4: -4.5 billion years ago: Mercury, Venus, Earth, and Mars form.

Detailed explanation-5: -Earth will be scolded and become bone-dry. In about 5.5 billion years the Sun will run out of hydrogen and begin expanding as it burns helium. It will swap from being a yellow giant to a red giant, expanding beyond the orbit of Mars and vaporizing Earth-including the atoms that make-up you.