Does a human life-span depend on a planet's orbit?
91585
Well we are rather accustomed to the current orbit.  I personally would find life in either mercury's or pluto's orbit a tiny bit trying, and yes, probably life-shortening.
221462
Actually, No.\n\nIf our planet was anything but symetric about the access of rotation, it would develop a tremendous vibration or wobble.  This would lead either to localized forces that would eject people and things beyond the gravitational field, or would result in the complete breakup of the planet itself.\n\nSorry.
721889
it varies greatly depending on the position of the bodies in their orbits
1011935
Which one?  They're not all the same you know.\n\nLet's say 400,000 years for safe\n\nOK ok,\n\nr = 30 trillion miles\nC = 2πr\nOrbit length = 188.5 trillion miles\nPluto orbits at something like 2 km/sec which translates to 5369 mph.  Let's divide that by 4 for silly [Outer objects travel slower than inner objects].  That's 1342 mph.  Dividing...\n140,461,997 hours.  16,023 earth years.
970270
it won't be for a long time from now, like 1000s of years, but it will happen.  Planets are basically stars and stars burn out sooner or later.  If it isn't earth that ends first, it'll be the sun that burns out and we can't survive without the sun.
51021
No. Planets orbit stars.  The earth is a planet orbitting its star, the Sun.
374462
None at all. The human gives himself too much importance. Essentially, the role of mankind is as unimportant as the role of rocks, mosquitos and, actually, anything in the universe. However, mankind would not survive had it accepted the absolute pointlesness of its existance and so, our elevating of humanity's status above something what it really is seems only natural.
532815
No we wouldn't age any less relative to everyone else on Earth becase we're all in what's called the same "reference frame." Relative to other reference frames, our aging rate would be different, but at the velocities involved the difference would be negligible.
734020
Earth was born in orbit around the sun.  \n\nIt is somewhat of a homebody.  Although it gets around a lot, it never leaves the immediate neighborhood.
240428
yes it goes around the sun.\n\nBut the sun orbit in the universe means that we orbit alot more suns although it would take billions billion years to do so.
650028
Our sun provides energy and heat, so, it determines what kind of weather we have. Other planets and even our moon, help with gravitational pull that makes us have a year of approx. 365 days. Also, our yearly stations (winter, spring, summer and fall) depend upon the earth´s rotation around the sun and if any of the planets was missing, our planet would modify its orbit around the sun, the position of earth would change and maybe, life on earth would no longer be possible.
336535
Total life span=8billon+yrs.\nIt may last for another 4.5 billion years.....(and counting)
952186
It's generally true that the further the Earth were from the Sun, the colder it would be, and the closer the warmer.  However, this is not necessarily the most important factor.  For example, the Earth is closer to the Sun when it is winter in the Northern Hemisphere, not further.  But the winter is cold because the Northern Hemisphere tilts away from the Sun at this time.  In a nearly circular orbit, the tilt of the axis is a stronger effect than the orbit's eccentricity.  However, with all other things equal, the planet's temperature would vary with distance from the Sun.\n\nThe Sun has a range of orbits around it that are considered a "habitable zone."  The Earth could have different orbital distances within this range, and life on Earth could theoretically continue, but probably with great disruption to the ecosystem.  Not all species would survive.  Humans would have a good shot because we could use technology to warm or cool our enviornment as needed.  Closer to the Sun that the habitabile zone, the heat and radiation are too intense for life as we know it.  Further away, the heat and light available are insufficient to sustain life.\n\nEarth could quite possibly exist as a habitable planet in the orbits current occupied by Venus and Mars.  Venus is extremely hot, but much of that comes from Venus' runaway greenhouse effect that makes its surface hotter than that of Mercury, which is closer to the Sun.  Mars is rather cold, but that is partly due to the planet's lack of greenhouse gases, preventing it from retaining the Sun's energy to the extent that Earth does.
272536
yes--look:\nhttp://www.nasa.gov/audience/forstudents/k-4/home/F_Planet_Seasons.html
472607
planets orbit stars, satellites orbit planets
46523
Scientists recently discovered a (presumed) rocky planet orbiting a small red-dwarf star about 25,000 light years from Earth.  The planet is about 5 times larger in diameter than Earth and revolves around its sun about two and a half times further away than does earth.  Because its sun is smaller and cooler and because it rotates further away than does Earth, the average temperature is about -300 degrees and so probably does not harbor life.
451278
here is a calculator for determining planet and orbit sizes to scale.  i hope this helps.\n\nhttp://www.exploratorium.edu/ronh/solar_system/