Why is space dark?
What is the name of the paradox that helps us explain why space is dark.
The Olbers' Paradox
Olbers' full name is...
Heinrich Wilhelm Matthias Olber
When did Olber ask his famous question?
1823
Since the space would be ______ and something that it is ______ would not have a temperature. Fill in the blanks(It is the same word).
Since the space would be empty and something that it is empty would not have a temperature.
According to the video, space is like what household object?
A vaccuum
What is Redshift?
The wavelength of the light is stretched, so the light is seen as 'shifted' towards the red part of the spectrum.
The Olbers' Paradox is also known as...
The dark night sky paradox
The video says, if space is infinite, static, and timeless, what should space be?
Lowsy with stars. (Covered, filled)
"Space is cold because cold is what you get when there is a little source of heat by the earth." Is this the same sentance from the notes?(Is this sentance true or false.)
False. Space is cold because cold is what you get when there is no source of heat by you.
What is the average temp for outer space. (Get within 5 degrees on either side and then you will be correct.)
-455 degrees fahrenheit
Why is the space we see isn’t consumed with the light of the stars? This question gets linked to the ______________.
The Olbers' Paradox
Redshift is what key to who?
Astronomers
Who "solved" the paradox?
Edwin Hubble
-272’C which is only one degrees warmer than absolute zero. What is absolute zero?
Lowest limit for all temperatures.
Earths atmosphere helps distribute heat through 3 methods. Name two out of three of those methods.
Cunduction
Convection
Radiation
When a source of light is moving away from you, the wavelength of that light is made longer. What is this known as?
Redshift
The first published solution to the Olbers' Paradox was writen by who?
Edgar Allen Poe
Edwin Hubble observes that everywhere he looks in the universe the spectrums of all the stars were slightly ______. What color were the spectrums?
Slightly red
What is the name of the 2 astronauts that used the swedish ESO telescope?
Sashai and Nyman
Radiation only heats molecules that are what?
Directly in its' path.
Why is the Olbers' Paradox considered a paradox?
Because of the apparent conflict between our expectation that the night sky be bright and our encounter of space is black.
What is the supposed solution to th Olbers' Paradox?
The constant expansion of the universe and the effects of redshift.
Light isn't reaching us because Space itself is what?
What is infared light?
Electromagnetic waves that the human eye can not see.
The temp on mercurys night side can be down to ___________ degrees lower than its day side.
-1000 degrees fahrenheit