Question: does the sun get bigger everyday and if it does will it one day explode

Natalie Lamb answered on 13 Mar 2019:

Over time the sun is expanding and getting brighter because the hydrogen it burns is slowly decreasing. When the hydrogen does run out (in another 5 billion years or so) chemical reactions will continue with helium in its core making the sun become what is called a Red Giant (which is massive and large enough to envelop the Earth). When the helium runs out, it will become a White Dwarf, a very small Earth-sized star and that’s it. So the sun will never explode because it isn’t big enough (it is too small to ignite anything past the helium in its core).
Other bigger stars can explode (a supernova explosion) because the burning continues until it makes iron which makes its core unstable.