How do we know earth is 4.6 billion years old?

It is widely accepted by both geologists and astronomers that Earth is roughly 4.6 billion years old. This age has been obtained from the isotopic analysis of many meteorites as well as of soil and rock samples from the Moon by such dating methods as rubidium–strontium and uranium–lead.

35.8K

755.8K views
2023-07-15 09:58:18

Show all Q/A Info

How old is 4 in cat years?
4 human years = 35 cat years. 6 human years = 42 cat years. 8 human years = 50 cat years. 10 human years = 60 cat years.
2024-02-09 17:37:10

How much won is 45.6 billion in us dollars?
Since 1 Korean won is equal to 0.00084 USD (that's 84 hundred-thousandths of a dollar), that means 45,600,000,000 won is $38,460,271.20 USD.
2024-02-01 02:48:19

Is the sims 4 high school years worth buying?
High School Years gives more life to teenage sims. Here's what you can expect. The Sims 4 High School Years allows your Sims to fully participate in teenage life. Not only can they attend school but there are also a number of other features that really enhance the teen experience.
2023-07-16 14:31:53

Is the sims 4 for 13 year olds?
What is the age rating? The Sims 4 has a PEGI rating of 12. PEGI defines this rating: 'Video games that show violence of a slightly more graphic nature towards fantasy characters or non-realistic violence towards human-like characters would fall in this age category.
2023-06-15 10:52:16

Recommended Next Q/A: