Educated Earth // Videos - Astronomy - Why is the Sky Dark at Night?
User:
Pass:
Remember Me
Forgot Pass Register

Our educational work is entirely supported by people like you. Your donations directly add new exhibits and new features to the website, and even helps us open the Prehistoria Natural History Center!




eXTReMe Tracker

Videos / Astronomy / Why is the Sky Dark at Night?







Why is the Sky Dark at Night?

Why is the Sky Dark at Night?
There is enough luminous matter in the universe to light up the entire sky, even brighter than the surface of the sun, but at night the sky darkens. Why is the night sky dark?

Olbers' paradox states that at any angle from the Earth the sight line will end at the surface of a star, so the night sky should be completely white.. This film explains the critical flaw in this thinking.

  • Currently 2.81/5
  • 1
  • 2
  • 3
  • 4
  • 5
Rating: 2.8 / 5 (646 votes)
Posted by nova on April 30, 2011
Hits: 3057

More Videos

Calculus 1.3a: Lines, Parabolas, Circles, and Translations
Calculus 1.3a: Lines, Parabolas, Circles, and Translations
Type: Mathematics
The Trials Of Henry Kissinger
The Trials Of Henry Kissinger
Type: Documentaries
A Cheetah On The Hunt
A Cheetah On The Hunt
Type: Life on Earth
Trying to Save the World's Amphibians
Trying to Save the World's Amphibians
Type: Making A Difference
Retroviruses And Pseudogenes
Retroviruses And Pseudogenes
Type: Biology & Medicine
Ted Turner Interviews Carl Sagan
Ted Turner Interviews Carl Sagan
Type: Miscellaneous
The Zoology Of The Scorpionfly
The Zoology Of The Scorpionfly
Type: Life On Earth
Atlantis Rollout and Endeavour Landing
Atlantis Rollout and Endeavour Landing
Type: Astronomy
Leopard Slug Mating
Leopard Slug Mating
Type: Life On Earth
How Leather Is Made
How Leather Is Made
Type: Tech & Gadgets
Presidential Defense Vehicle
Presidential Defense Vehicle
Type: Tech & Gadgets
Our Weird Universe
Our Weird Universe
Type: Humanity
Nasa Goes Hypersonic
Nasa Goes Hypersonic
Type: Tech & Gadgets
Ancient Egyptian Binary Mathematics
Ancient Egyptian Binary Mathematics
Type: Mathematics
Next Generation Space Suit
Next Generation Space Suit
Type: Astronomy

Comments

There are no comments on this item.
User: Pass: Remember Me

To comment on this item, please login or register.


Warning: Unknown: Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively in Unknown on line 0