[grovegames]

So if our sun were replaced by Betelgeuse, Betelgeuse would engulf all the inner planets. That's huge. It's hard to fathom a star that big.

[finnh]

Our star is going to do that in 5 billion years - transform into a red giant & engulf Mercury, Venus, and probably Earth.

https://en.wikipedia.org/wiki/Sun#After_core_hydrogen_exhaus...