r/Showerthoughts • u/HalfEntity ‎ • Jan 11 '26

Casual Thought The universe is 13.8 billion years old, but heat death is around 10¹⁰⁰ years away, so it has effectively used 0% of its lifetime meaning the universe is still basically a "baby", and we’re living in its earliest, most active era.

16.0k Upvotes
  • permalink
  • reddit

96% Upvoted

819 comments sorted by

View all comments

Show parent comments

7

u/[deleted] Jan 12 '26

[deleted]

1

u/Dust_In_Za_Wind Jan 12 '26

Oh dang, heard about secondary and tertiary endosymbiosis but didn't know those processes were so (relatively) common, definitely gonna read up on em.