have you ever wondered why Earth is a sphere?

[Mikeisonfire]

i mean srsly, couldnt it have been a more fun shape, like a pentagon?
and they should have made it so gravity on Earth was set to 250 instead of 800

elohel
whatevz, you guys are boring

[Shadow Eminence]

have you ever tried crack?
btw, you live in San Jose? What high school do u go to? Cuz I'm from the 408 too

[Fly]

well the pentagon is a shape, all shapes are 2d. by chance would you mean a pentagonal prism?

Btw is we had 250 we would have little muscle structure

250/800 = .3125 (practically a third of of gravity)

Physics:
Gravity is (accelerating at a rate of) -9.8 meters per second

so typically .3125% of 9.8 is 3.0625 or rather -3.0625

Here are some interesting things I found that others have reported upon.

news-service.stanford.edu/pr/91/911008Arc1129.html

A variety of experiments tested the cardiovascular, circulatory and immune systems. To test the immune system, some crew members had blood drawn during orbit. The blood was centrifuged and monitored for production of white blood cells, which are critical to fighting off infection. Preliminary results indicate that space flight slows the proliferation of these cells, a serious potential problem for astronauts facing a long trip to Mars or long- term staffing of a space station.

The astronauts' hearts and lungs were also monitored, since in zero gravity, the lungs change shape because gravity is no longer pulling them down. This, in turn, affects gas exchange within the lungs. Data on these and other tests are still being analyzed.

In addition to the seven human crew members, there were 29 rats and 2,000 jellyfish aboard. The normally bobbing jellyfish swam in circles in zero gravity. Jellyfish have gravity receptors analogous to organs found in the human inner ear. By examining the development of these jellyfish receptors in space, scientists hope to gain understanding of the adaptation of the human vestibular system to zero gravity, thereby gaining insight on space adaptation sickness.

This tells about the affects of zero gravity on the body.


www.nonipsnotucks.com/cms/Homepage-Gravity.asp

* reduced aerobic capacity
* muscle loss, especially the ones that support posture
* bone loss, especially bones of the leg and lower spine (bone loss after one week in space was equal to bone loss of one year on earth)
* the digestive system became sluggish
* the body was less able to absorb calcium and other minerals from the intestines
* weakness
* lowered blood pressure
* fainting (75% astronauts felt faint on returning to Earth)
* loss of balance
* depressed immune response
* anaemia
* diminished eyesight
* inability to hold a steady gaze whilst moving
* sense of smell and taste were diminished
* constipation (because the longer the stool stays in the gut the more water is absorbed from it)
* loss of memory (Cosmonaut Valery Polyakov learnt 5000 English engineering terms before joining the Mir space station in 1994. after a few days in space he could not remember a single one. Six weeks after he returned from space they started to come back.)
* hearing is diminished
* reduction in muscle mass of the heart and muscle walls of blood vessels become thinner, leading to huffing and puffing when expending energy
* difficulty sleeping



Are these symptoms familiar? They are all typical signs of the ageing process. So did the astronauts grow older is space? No, but they did age faster. The good news is that the astronauts over time reversed all of these detrimental changes. Zero or reduced gravity will age you, and allowing your body to utilise gravity to the fullest will prevent you from ageing or reverse the signs of ageing.

[ambush67]

ummm... ill read this later because iv had enough physics/ school for one day