You exist on a rocky world orbiting a yellow dwarf star of little value that will get brighter, then broaden, burning Earth to a crisp (in about 1-3 billion years), prior to taking off and spreading out atoms– including yours– throughout the Galaxy.
The Sun merges hydrogen atoms into helium atoms. This is nuclear blend and it produces amazing energy. Nevertheless, as its hydrogen reserves diminish that procedure will speed-up, making the Sun diminish yet shine more brilliantly. Earth will be scolded and ended up being bone-dry.
In about 5.5 billion years the Sun will lack hydrogen and start broadening as it burns helium. It will switch from being a yellow giant to a red giant, broadening beyond the orbit of Mars and vaporizing Earth– consisting of the atoms that makeup you.
The Sun as a red giant will then … go supernova? In fact, no– it does not have adequate mass to take off.
Rather, it will lose its external layers and condense into a white dwarf star about the exact same size as our world is now.
It’s that cloud of dust expelled by our passing away Sun as a white dwarf noticeable around our Sun as a white dwarf that will be our tradition– an incredible planetary nebula.
A planetary nebula is the radiant gas around a passing away, Sun-like star.
It will radiance with the ultraviolet light from the Sun as a white dwarf.
A planetary nebula is the last– and relatively quick– phase in the life of a medium-sized star like our Sun.
There is, nevertheless, a kicker.
When the Sun leaves a nebulae it will no longer remain in the Galaxy.
A billion years prior to the Sun takes off, the Galaxy will have clashed and combined with the Andromeda Galaxy– presently the closest significant galaxy to us at 2.5 million light-years– to develop a brand-new, huge galaxy called (possibly) “ Milkdromeda”