Neil deGrasse Tyson
@StarTalk·5.4M subscribers·1.8K videos
Why is the Night Sky Dark? | Neil deGrasse Tyson Explains...
Posted
May 24, 2022
Views
712,102
Likes
23,084
Comments
1,371
Engagement
May 24, 2022
712,102
23,084
1,371
3.43%
Every word spoken in this episode is indexed. Type any phrase to jump straight to the moment it was said.
Type any word or phrase that may have been spoken. Click a result to seek the player to that exact moment.
Try a name, a topic, or a quoted line
11:25Now PlayingWhy is the sky dark at night? On this explainer, Neil deGrasse Tyson and Chuck Nice go over Olbers’ Paradox and why the night’s sky is dark. Hint: it’s not just because it’s nighttime.
Why isn’t the entire night’s sky ablaze with stars? We travel back to the early 1800s to discover Heinrich Wilhelm Olbers’ confounding question: if the universe is infinite, shouldn’t every sightline land on a star? We discuss physics and equations for star brightness. If you put the sun three times farther away how much area in the sky does it take up? How did discovering the expanding universe finally help confirm this question?
Get the NEW Cosmic Queries book (5/5 ⭐s on Amazon!)
Support us on Patreon
FOLLOW or SUBSCRIBE to StarTalk:
About StarTalk:
Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!
#StarTalk #NeildeGrasseTyson
Sentinel Indexing in Progress
Metadata and chapters are available. Claim extraction for this episode is pending.
All video content is delivered via YouTube embedded players in accordance with the YouTube Terms of Service. Sentinel provides research tools that promote discovery and accountability across political media.
