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Aphelion and Perihelion The Earth's Elliptical Orbit Around the Sun

Science & Tech  (tags: astronomy, Earth, Sun, interesting, research, space, world )

- 1721 days ago -
The earth's orbit around the sun is not a circle. The earth's orbit around the sun is slightly elliptical. Therefore, the distance between the earth and the sun varies throughout the year....

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Past Member (0)
Saturday August 3, 2013, 1:48 am

David C (25)
Saturday August 3, 2013, 1:58 am
> The earth's orbit around the sun is not a circle.
- even less is Moon's (more excentric) orbit around Earth
but both can be closely approximated by a circle (you'd have to draw a pretty large one to not contain the orbit in a (sharp) pencil-line's thickness) but with the center mass not in mid-point but ex-centric

and with Earth moving faster near perihelion (Kepler's 2nd), (on N hemisphere) winter is shorter than summer

Past Member (0)
Saturday August 3, 2013, 5:19 am
Thx Frans

Roger G (154)
Saturday August 3, 2013, 1:59 pm
noted, thanks

Shan D (49)
Sunday August 4, 2013, 12:49 pm
WTF - Why is this considered news? It's a bunch of facts that any elementary school-aged child could find out. I knew about Earth's elliptical orbit when I was even younger (I have been an astronomy buff since age 4).

BTW, DAVID C., winter may be shorter than summer out in space (mathematically speaking), but climate-wise, it's all relative to local conditions on Earth. In my region of Canada, winter lasts from (on average) mid to end-October to some time in April (or May, some years). That's considerably longer than summer.

Birgit W (160)
Sunday August 4, 2013, 1:39 pm

Carmen S (611)
Sunday August 4, 2013, 4:03 pm
thanks Frans

. (0)
Sunday August 4, 2013, 4:15 pm

Nelson Baker (0)
Sunday August 4, 2013, 5:24 pm
Thank you.

Debra Tate (17)
Sunday August 4, 2013, 5:42 pm

Jeanne R (1203)
Sunday August 4, 2013, 6:18 pm

DaleLovesOttawa O (198)
Sunday August 4, 2013, 8:40 pm
Yes, Shan D. but it is always fun to look at that photo of the hot sun on the link... the sun needs to be brought a bit closer to Canada to warm us up during a -40 day winter day. If we hire a tug boat and pull good old 'Sol' a wee bit closer to Earth so that we get 27 C during the winter months that might cheer both of us up. Then we will not be swearing after a blizzard and having to go outside and clear the *#@!!! snow off the car yet again! Deal?

Shan D (49)
Sunday August 4, 2013, 8:56 pm
Dale, we certainly do NOT need warmer winters - they're considerably warmer now than they were when I was a child in the '60s. I look at current photos of the Rocky Mountains and literally cry, because they're so BARE. They should have big, beautiful glaciers on them, and they don't.

BTW, we ARE closer to the Sun in the winter. The reason summer is so hot is because the North Pole is tipped toward the Sun.

And I hate anything remotely close to 27C. That's too hot for me, by far. As for clearing snow, that's the beauty of apartment living - I don't have to shovel anything except my balcony, and even that's optional. I don't own a car, but even if I did, it still wouldn't matter since we have underground parking here.

But I did live in a house for many years, and did have to contend with snow shoveling, and ice chipping, and finally did swear at the City when they dumped a wall of snow in front of our house and the damn thing FROZE. My dad and I chipped away at it for several days, until we finally gave up. I called the city to come and clear the rest of it, and the only way I got them to do it was by explaining that it was blocking a storm drain and there would be flooding if they didn't fix it.

Birgit W (160)
Monday August 5, 2013, 2:59 pm
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