Why is it Dark at Night?

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Picture of Gorf35 achievements

+15 1. Gorf commented 8 years ago

Makes sense, I think...
Picture of MajorIdea45 achievements

+6 2. MajorIdea commented 8 years ago

Whoa! That was cool. Thanks!
Picture of havix142 achievements

+21 3. havix1 commented 8 years ago

WOW I thought it was just a smiple lack of light, way cool
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+5 4. nakama7777 commented 8 years ago

my head just exploded...in a good way XD
Picture of Nifen34 achievements

+10 5. Nifen commented 8 years ago

i was not going to watch this video thinking, are you stupid this question is pretty easy.
Then i watched it. I'm feeling stupid, I didn't know it was caused by the galaxy moving away which causes light to become infrared.
Picture of ol1v33r22 achievements

+3 6. ol1v33r commented 8 years ago

This video is boss, the only thing i am slightly unsure of is:- Are the distant stars turning infra-red because they are going away from us at a faster rate and their wavelength is increasing or slowing down like the record and lowering their wavelength to infra-red?
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+5 7. huldu commented 8 years ago

Many hundreds of years ago man believed the earth was flat. Many hundreds of years from now... what we "think" we know and what we don't know will be laughable.
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0 8. lyleoz commented 8 years ago

So, when my smartphone becomes a flashlight, the light moves away or the night becomes darker?
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+10 9. xxxLesy commented 8 years ago

#6 Yes. It was recently discovered that the universe is accelerating in expansion. That however left many scientists baffled, because they all assumed the expansion should be slowing down. They now assume there is an invisible force, pushing all the stars further apart.

The video is not completely accurate though. Scientists don't agree that the universe is limitless. NASA believes the universe is infinite and flat (standard model from 1930s). Others are certain that the universe has the shape of a football (soccer ball) - a dodecahedron. Einstein calculated the radius of the universe being 10^10 light years.

For further info I recommend watching "Through the wormhole" series.
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+2 10. wtfysc commented 8 years ago

Holy shit. And here I was thinking "pfft I don't need to watch that, the sun goes around the other side of the earth blah blah...".
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0 11. millybert69 commented 8 years ago

the reason for it being dark at night is because the suns nakerd and has simply gone to bed SIMPLES just like every other person does
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+2 12. moskwiz commented 8 years ago

So.. the sky being black at night is direct evidence of the big bang =D What are they still arguing about then?!?
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+2 13. gcleffff commented 8 years ago

oh now i know where did they get the infrared hmmmm