PBS Space Time

PBS Space Time - Season 2020 Episode 13 How We Know The Earth Is Ancient

2025-09-04 48 minutes.
10.00 1 votes

Season - Episode

2025 Season 2025 Jan 16, 2025
2024 Season 2024 Jan 10, 2024
2023 Season 2023 Jan 11, 2023
2022 Season 2022 Jan 12, 2022
2021 Season 2021 Jan 12, 2021
2020 Season 2020 Jan 06, 2020
2019 Season 2019 Jan 09, 2019
2018 Season 2018 Jan 10, 2018
2017 Season 2017 Jan 04, 2017
2016 Season 2016 Jan 06, 2016
2015 Season 2015 Feb 11, 2015
1 Season 1 Feb 11, 2015
0 Season 0 Apr 10, 2017

Overview

In astronomy we talk about billions of years like it’s no big deal. But how can we be sure about timescales so far beyond the capacity for human intuition? Our discovery of what we now call deep time is very recent - as recent as our discovery of the true spatial vastness of our universe. And it came as scientists tried to measure the age of the Earth. What they found was as shocking and humbling as anything seen through the telescope.

Year
Studio
Director
Crew
Popularity 3.1565
Language English