- Home
- Search
- Settings
- Top Contributors
- Help Center
Answer:
Rates of radiometric decay, also by looking at the most distant detectable objects (galaxies about 14 billion light-years away).
1 light-year = the distance light travels in one year. If an object is 14 billion light-years away the universe must be at least 14 billion years old for the light to get to earth.
1 light-year = the distance light travels in one year. If an object is 14 billion light-years away the universe must be at least 14 billion years old for the light to get to earth.
Oh, also by estimating the amount of hydrogen that has been converted by stars into other heavier elements, etc.
First answer by Mizark2486n.
Last edit by Mizark2486n.
Contributor trust: 337
[recommend contributor
recommended].
Question popularity:
6
[recommend question].
Do mindless behavior work out?
Answer it!
What do samurais touch?
In: Samurai
Answer it!
What company has a t and a triangle as their logo?
In: Logos
Answer it!
» more