A Year On Earth

Submitted by: xiquiripat 6 years ago Science

Time to get your science on with celestial mechanics.
There are 68 comments:
Male 1,351
Yes, you might ask them that question at the end. And they might promptly punch you so hard that your nose becomes "anamolous". Great video, I`m sorry to say I did not understand a few parts of it.
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Male 5,608
If you can get past the narrator`s inflections, there are other related videos that are also interesting.
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Male 74
Brian 61316: spore music :P

I know. Now I want to play Spore!
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Male 6,694
Space is cool. Lets all go.
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Male 741
spore music :P
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Male 72
My mind has officially been blown.
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Male 571
I usually enjoy stuff like this, but this just got so technical I stopped caring about halfway through.
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Male 770
I like stuff like this. Seeing something educational every once in a while helps to remind me the internet does have other uses other than porn.
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Female 160
Good grief, Earth, can`t even orbit in a straight circle? How many have you had?
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Male 15
"When other factors are equal" at 5:30 is a crucial conditional statement. Their description of perihelion and aphelion seasonal changes would be correct if Earth were not covered with water, but because of the uneven distribution of oceans, the nouthern hemisphere actually has more mild seasons and the northern more extreme. Bodies of water tend to temper the climate, and the southern hemisphere has much more ocean coverage than the northern.
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Male 23
I watched it twice and enjoyed it.
drat.
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Female 2,289
i was on the brink of tears from how boring this was.... like... it was so boring, it was interesting.
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Female 245
boredest1: really? i only made it to 1:10...
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Male 25,416
learning is fun!
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Male 541
"I`m 25 years old"

"Is that in sidereal, tropical or anomalous years?! :D”

"Oh God, please don`t kill me!"
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Male 556
Made it to 4:25, what do I win?
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Male 3,631
I think we need an info-graphic for this.
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Male 2,229
twisted
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Male 192
$32 for Jordan shoes is way too expensive for my taste, spam-bot. Now if it had been $31, I might have bit.

This guy has a voice to die for, because I felt like if I had to go one more minute, I would kill myself. I`m usually a serious astronomy/astrophysics documentary fan, but this is unacceptable. Someone get Carl Sagan or Morgan Freeman in here.
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Male 784
Pushed play. Had to run to the bathroom. Missed the whole year. Goddamn!
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Female 347
I made sense of leap year from this, so it wasn`t a complete waste of 1:39... that`s as much as I could take.
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Male 697
his voice ruined it
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Male 68
Damn Jupiter and Saturn, messin` with our eccentricity!!
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Male 660
@thecolor9 I lasted 5 minutes
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Male 12,365
[quote]Im not sure how much sense this would make really.....I mean, if the earth is that much further away wouldnt the whole planet go through a winter or a summer based on positioning?[/quote]

The variation in distance is exaggerated in this video to make it clearer that it does vary. The actual variation is small, about 5% IIRC. It does have an effect on seasons, but not much of one.

[quote]Also would Murcury and Mars not be closer thus further effecting gravitational effects such as tides on the earth?[/quote]

Yes, but not by much. They don`t have much mass.
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Male 12,365
[quote]Yeesh... so many variables, I would not want to be the person responsible for predicting the exact position of Earth on say, December 21, 2012.[/quote]

In a sense, there are no exact positions. It`s all relative to something else.

The movement can be calculated accurately if you know all the forces involved, though. Certainly for the very near future. The margin of error for 18 months from now would be miniscule.
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Male 12,365
[quote]Hate this bastards voice. He needs to take some acting classes. He always ends with a higher pitch, so it sounds like he is talking to kids or something.[/quote]

I agree about the acting classes. He`s reading a lecture without any relevant experience or training in doing so, which greatly detracts from the lecture. You get the lecture as a series of roughly sentence-sized chunks determined by the amount he can read and remember at one time, and that is never going to work well.

When I lectured, I never scripted it. I used key point notes for myself and a rough plan for pacing. That approach has its own problems, of course.
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Female 5,222
yay science!
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Male 1,244
Tropical years just sound better...
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Female 877
booooriiinggg

but i studied astrology so much by my own will xD
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Female 47
After about 6minutes I got lost... otherwise, very interesting
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Male 1,164
drat you science. drat you and your drating numbers.
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Female 80
Interesting but I cant stand the voice. I cant get through it.
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Male 462
ahahhahah this narrator is such a queer
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Male 441
Hate this bastards voice. He needs to take some acting classes. He always ends with a higher pitch, so it sounds like he is talking to kids or something.
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Male 113
Science..FTW
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Male 2,436
Hmmm... I did not know that.
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Female 10
I`m loving the fact that they used simple commercial Starry Night software to explain this. I think they give that version out free now with certain telescopes.

(Or, at least, that`s how I got my copy of it)
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Male 418
u forgot about global warming. im super cereal
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Male 5,194
>>the narrator`s voice makes me want to punch a baby

I didn`t like it, either. Too cloying.
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Male 703
Yeesh... so many variables, I would not want to be the person responsible for predicting the exact position of Earth on say, December 21, 2012.
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Male 915
the narrator`s voice makes me want to punch a baby
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Male 533
"There is simply no way the earth could be coming that close to the sun based on the scale of the video without crossing paths with the other 2 planets...."

I fear for our future...
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Male 7,585
interesting, but nothing i didnt already know.
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Male 105
Glad to see this is getting more positive reviews, it had 1.7 when I saw it first.
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Male 105
@Batmanners - A little vocal, but I agree with your sentiments
@choonma - My guess is the guy DID know what he was talking about, but he was reading off of a paper because who in their right minds would wing this kind of production without a script? He`s not a trained speaker, cut him some slack. Have you ever been to a lecture live?
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Male 142
I hope they didn`t pay that narrator very much, if anything. He was reading, and not very well. He had no idea what he was talking about.
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Male 4,004
"i-am-more-bored than-when-i-started.com"

You`re-as-stupid as-when-you-started-dot.com


"There is simply no way the earth could be coming that close to the sun based on the scale of the video without crossing paths with the other 2 planets...."

DUDE! THE SUN WAS 1.5X BIGGER THAN THE EARTH, AND THE EARTH SPUN AROUND IT IN 3 SECONDS... OF COURSE IT WASN`T TO SCALE YOU DOUCHEY IDIOT!
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Male 105
Seasons are caused by a variation in radiation throughout the year, and while the earth receives more or less radiation during parts of its orbit depending on proximity to the sun, that difference is of little significance when compared to the difference caused by the axis being tilted, which alters the exposure time to radiation (rather than intensity).
Yes, Murcury, Venus, and Mars are all closer and do in fact affect orbit to some extent, but the amount is negligible compared to the giants of Jupiter and Saturn.
Yes, OF COURSE the scale on the video is exagerated, but with the purpose of providing a good visual.
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Male 85
TAKE THAT GROUNDHOG DAY!!
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Male 4,680
This is totally inaccurate.

Why is the Earth rotating the Sun? It`s the other way round, freaking dumbasses.
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Male 633
PUDDING1961, i`m with you, right in the middle i lost interest as well. I think it was the tone of the presenters voice. Makes you wonder about global warming though, were less than 9000 years before our next ice age.
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Male 119
i-am-more-bored-than-when-i-started.com
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Female 1,894
this guy has a hard time saying some of these words
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Female 69
I feel a little nerdy because, not only did I understand all of that, but I already knew most of it. -_-;
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Male 2,700
Im not sure how much sense this would make really.....I mean, if the earth is that much further away wouldnt the whole planet go through a winter or a summer based on positioning? Also would Murcury and Mars not be closer thus further effecting gravitational effects such as tides on the earth? Either this is completly untrue or exagerated in the video.

There is simply no way the earth could be coming that close to the sun based on the scale of the video without crossing paths with the other 2 planets....
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Male 10,845
interesting
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Male 37
Very interesting, but a lot of the terminology went over my head unfortunately.
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Female 446
I usually appreciate science facts and knowledge...but i dunno what happened as i lost interest in the middle of the clip and was harrassed by a fly, which i immediately honed my nuclear powered flyswatter onto the evil bugger. So...ok...earth axis, sun, moon, the four seasons and fun stuff like that. Well, i missed it and i`m not restarting that clip again! (Holds flyswatter and waits till a big one hits the bug scanner.)
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Female 412
The Earth`s orbit is like a Spirograph!
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Female 173
call me a nerd, but i found that incredibly interesting.
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Female 247
cool. I sort of understood it.
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Male 60
Up until about 6 minutes, it was all basic earth and space information. You learned that stuff around 6th grade?
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Male 707
NO.. no, you can not ask a person if his or her age is counted in ciderial, tropical or anamolous years.
you just can`t.. there will be pain, a lot of pain. so don`t
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Male 90
Aahh too much science!!
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Female 2,120
Awwww, come on, it`s Saturday! Do I have to think?
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Male 432
Sorry, I couldn`t listen to that guy`s voice any longer. It was WAY too friendly. I was ready to shoot myself.
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Male 2,422
Link: A Year On Earth [Rate Link] - Time to get your science on with celestial mechanics.
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