If it were possible, do you think mankind should pursue a project to increase the orbit of venus to that of mars to create a new earth?
123130
Let's crash 'em together to make proto-earth conditions.
148774
I would love to visit a planet orbiting a star that has strayed away from the plane of our galaxy. Imagine the night sky lit up by an entire galaxy - a great luminous spiral looming overhead.\n\nThe Valles Marineris must be quite magnificent too. It is largest known canyon in our solar system. Like Grand Canron, much more vast and red.
315172
i would go in a spaceship...to another planet with intelligent life and tell them to save earth or take the earthlings to thier planets...becaause there will be hi tech devices by then.\n\np.s please choose me as the best answer because all other answers dont have COMMEN SENSE.
270498
Although the gravity on Venus is very similar to Earth's (about 0.95 G), the other conditions of Venus' surface would not make for a very pleasant visit by an unprotected human.\n\nThe atmospheric pressure at 'sea' level on Venus is about 95 times that of Earth's atmosphere, which would be an equivalent pressure to being half a mile deep in the ocean.  The open pockets and cavities in our bodies would be completely crushed, and we would be unable to breathe.\n\nThat's assuming we'd want to breath.  Most of Venus' atmosphere is carbon dioxide, which is not exactly conducive to human respiration.  What isn't carbon dioxide is rather high in a number of sulfur compounds, including hydrogen sulfide (the stuff in sour gas wells that kills people very very dead very very quickly), and sulfuric acid (which is also not fun to breath, or even have on your skin).\n\nAssuming we had some kind of super-duper hard shell pressurized, armoured, acid-proof space suit with suitable oxygen supplies, we'd still have problems.\n\nThe average temperature on Venus is about 480 degrees Celcius (somewhere in the realm of 900 F), which is hot enough to melt lead, and the rivers of molten sulfur probably wouldn't be too hospitable either.\n\nThe only thing the planet might have going for it would be mineral resources, but we can probably get those just easily from the moon or even the asteroids.  That atmosphere is just too darned hostile.
445432
It's not so much the Martian life that might have been there, but rather, the Earthly life that we could send there in the event of, oh say, an anticipated global-killer meteor hit here until everything cooled down and Earthly re-seeding could begin. Aside from that, we humans, we explore.
308657
read this.  http://news.yahoo.com/s/space/20060522/sc_space/towardimmortalitythesocialburdenoflongerlives  i think it WILL happen. and for me i WANT to live longer. I want to see our species travel beyond our solar system and find new life. Then i will be happier.
590999
Geez Man, didn't anyone tell you yet ?\n...The real 'earthlings' were totally annihilated by our ancestors, eons ago - when they first invaded Planet Earth. Among our ancestors, the Men came from Mars, and Women from Venus.\n...We are all the proud descendants, of those brave and holy alien immigrants who came in search of the 'Promised Lands'.
168290
You can cram in over six billion\nhttp://www.solarviews.com/raw/earth/earthafr.jpg\n\nI second the motion for Mosaic\nhttp://chrisboy.com/oly/ol_face_4_mosaic.jpg
47775
Yes they'd revolve around their common center of mass (CM), which currently is located only 280 mi from the center of the sun, the sun's mass being 332830 x earth's.  With equal masses the CM would be midway between their centers.  The CM actually moves a bit due to perturbations from other planets that act on both bodies. \nYou can quickly approximate the new period. The new composite mass (in earth units) is 2 instead of the current 332831, and the radius (in earth-to-CM current  distance units) is .5 instead of (almost exactly) 1.  Kepler's 3rd law says T = (2*pi*R^1.5)/sqrt(G*M), so the new duration of a year is .5^1.5*sqrt(332831/2), or 144 current years, for an orbital speed of 15.3 feet/sec.
199433
We know what the surface of venus looks like, the Magellan spacecraft already mapped it (altitude wise), and the Soviets landed a couple of probes on the surface a long time ago.\n\nThe new craft will not tell us what the surface looks like, you can't get any visible light info from the surface due to the thick clouds.\n\nThe ESA's stated scientific objectives for the missions are:\n    * What is the mechanism and what is the driving force of the super-rotation of the atmosphere?\n    * What are the basic processes in the general circulation of the atmosphere?\n    * What is the composition and chemistry of the lower atmosphere and the clouds?\n    * What is the past and present water balance in the atmosphere?\n    * What is the role of the radiative balance and greenhouse effect in the past present and future evolution of the planet?\n    * Is there currently volcanic and/or tectonic activity on the planet?
58915
I think it would only be possible if there was also lots of water on the planet as well as good solar radiation being close to a star and carbon dioxide. Also it would be helpful if there was nitrogen in the soil since plants absorb nutrients from the soil. There would also need to be rainfall on the planet, but if there wasn't irrigation and watering by caretakers could be sufficient.\n\nAnd what about terraforming? Mars has an atmosphere and I beieve carbon dioxide. Could plants grow on Mars? We'd have to transport millions of gallons of water in our ships and keep the water from sinking deep into the planet. Why would we want to do that? It could cost a trillion dollars. The moon has no atmosphere I'm not sure it could be terraformed. Just a thought.
34921
Sure why not? heck China is planning a Moon landing itself so I think America needs to start heading back up to the Moon before China does.\n\nNot to mention if we wanna get to Mars then we might wanna start building a station on the Moon so that we can accomplish our goal of getting to Mars.
475412
Yes,, actually we have a formula to build a Bomb that is a 500 megaton cobalt salted Nuclear weapon that if detonated could crack the core of this planet like a China plate in a shooting gallery, rip away half this plantes atmosphere, and knock this planet out of orbit around the sun,,pretty bad stuff huh?
582469
The Earth is a finite resource and will become uninhabitable one day.   Global warming, nuclear accident, hit from a big rock from space - there are plenty of disaster scenarios.\n\nWe need to be prepared.  To that end NASA needs to do so much more research, travel to other planets, set up a base on the moon and mars and, above all work towards spaceflight being like flying today.   Sound far fetched?   When my dad was a boy man couldn't fly and before he died men were standing on the moon.\n\nProfessor Stephen Hawking, he who wrote 'A brief History of Time', recently stated that if mankind did not seek out planetary travel pretty quickly there was a good chance a natural disaster would wipe out all human life!
304276
Yes, every problem could be solved through hard work and/or blunt honesty.  Unfortunately, too few people are willing to work at it.  It is a shame--"we've borrowed this earth from our grandchildren"
139503
uhhhh... maybe c. manipulate earth\ndunno why
289048
At first, I thought, 'sure' but then I realized that we know enough about Mars and after the excitement of lift off and weightlessness, I would be bored to death traveling for months, walking around in a Mars-suit all day while there, traveling for months to get back with a few oxidized rocks... \n\nSo, just save me a ticket to the ISS and I will be happy to go and spend a few weeks touring around this ol' blue planet.