how long would it take for us to get to another galaxy at the speed of light?

Question: how long would it take for us to get to another galaxy at the speed of light?
- Keywords:
  galaxy,
  space travel,
  speed of light
Asked by anon-225913 to Heidi on 20 Nov 2019.
- Heidi answered on 20 Nov 2019:
  
  The nearest galaxy is the Andromeda galaxy, and it is 2.537 million light years away, so travelling at the speed of light, it would take us 2.537 million years to get there!
  In contrast, our Sun is only about 8 minutes away at the speed of light.

Question: how long would it take for us to get to another galaxy at the speed of light?