Travel would take from 13 to 30 mos. Dangers: Astronauts run the possibility of losing nearly half the bone minerals in some regions of the body, which would make the astronauts' skeletons the equivalent of a 100-year-old person. Is the trip worth it? Such fragile bones could cause fractures. Would this affect any age for an adult? What's your thoughts?
203205
I think if the astronauts know all this.. and are still willing to, they may as they please.. but in my opinion it's not worth it.. they should jsut keep sending satelite's up there and learn more information about mars and other information they want.
33080
No oxygen in space. Need to bring or make your own.\nNo gravity or very weak affects the human body in many ways, one big is it weakens ones bones(and muscles).
131656
about 186,000 miles per second.  With our present technology, it would take hundreds of thousands of years. At the speed of light, it would only take thousands of years.
23203
The earth spins at about 1100 miles per hour at the equator (26,000 miles in 24 hrs) so stopping fast would be very distasterous to all living things. Remember, everything not locked down on earth would try to keep going 1100 mph! Imagine the ocean water going 1100 mph & slamming all the coastlines! From a human perspective, it would be very exciting for a second or two, then we'd all be flying with debris all around us that suddenly is going 1100 mph. I'd imagine lots of trees & rocks & bricks & wood & cars & metal, it would not be fun... Eventually we'd land on the ground or hit a mountain or something that stopped along with the earth. We'd then go up to heaven or nirvana or whatever religion place we go when we die. I would think things like seeds, bacteria & bugs would survive - but I'm only guessing given the way all the weather, land & seas would be changed. I doubt gravity would change very much but nobody would be alive to check...
280158
Well obviously, for the same distance you'll use more\ncalories walking than riding. The better comparison is\nsame time frames. Walk 1hr versus ride 1 hour. The advantage\nof riding is that it saves the longevity of you feet(\nankles, achilles tendon etc.).
426537
There is no easy answer to this. It depends on your bone structure and your eating habits.  You may be but only your physician will be able to give you answers to this.
176035
Living on Mars wont happen for a long time, \nFirstly we dont have the technology so we couldnt get there even if we wanted to\nSecondly it would cost a HUGE amount of money just to get the technology and then even more money to go into space\nThirdly, the journey to Mars is a couple of months at least so it would take a long time to get there and we dont know the effects of deep space radiation on the body yet so all the astronauts could die\nIn the near future ( say 50 years)  it is very unlikely the someone will go to Mars\nIn the far future ( say at least 100 years) then it is very likely\n\nAlthough if you mean someone living in an atmosphere on Mars rather than going there in a spaceship and landing and then coming back, well, it will take hundreds upon hundreds of years to do that as we have to create an atmosphere on Mars first and that is very very hard
374203
I would say that the most impossible part is when they enter the giant geode. If they were heading towards the center of the earth than when they entered the geode they would enter at the top and fall probably for hundreds of miles and die on impact. Also Giant Geode though a cool thought yeah right.
132538
earth's circumference = 24,900 miles approx.\n\naverage walking speed = 3 mph = 20 min per mile\n\n20 x 24,900 = 498,000 minutes\n\n498,000 divided by 60 = 8,300 hours\n\n8,300 hours divided by 24 = 345.83 days\n\nSo about one year! But that of course is non-stop walking. So factor in sleeping, eating, etc. Also, this is on the equator. The time lessens as you go north or south.
301576
Look at how many sattelites we put up... there is something wrong with your reasoning, you're ignoring a lot of the facts.  How is it more difficult now?  A civilian recently built and flew his own spacecraft into space 3 times successfully.  Hundreds of satellites are orbiting the earth as we speak.  How does it seem space travel is more difficult?  We have several astronauts in a spacestation right now... Civilians have purchased tickets into space, the people on the space station have been relieve, replaced, etc multiple times... As far as the moon goes, there really isn't/wasn't any reason to go back, not a whole lot there if ya know what I mean ;)  They're working on mars projects continuously... just because a few landers and orbiters crash doesn't mean things are more difficult.  If you do some research you will find literally hundreds of crashes, mislaunches, explosions, and other quality errors; the old times make the number and degree of current mistakes seem almost trivial.  Science and technology have proven themselves time and time again when it comes to space, and it keeps getting better.
578771
Well:\n\n440 Million Lt Yrs = 2,640,000,000,000,000,000,000 Miles\n\n2,640,000,000,000,000,000,000 / 25,000 MPH = 105,600,000,000,000,000 Hours\n\n105,600,000,000,000,000 / 8,760 (Hours per year) = 12,054,794,520,547 Years\n\n12,054,794,520,547 / 75 (Avg life span) = 160,730,593,607 Life times\n\nSo it would take roughly 160 billion life times to reach the explosion detected by NASA's SWIFT probe.\n\nLemme know how that works out for you. :)
510612
as long as he can get on a plane and sit that long.... but when he comes to CA he won't be covered under medicaid or anything for like 6 months, so make sure that's squared away before you do anything. A shattered vertebra, if it was treated with a vertebroplasty...which i think they usually do, it's just like super glue pumped in to hold the bone together...those work really well and are set within a few hours.... the hospital stay might be a day or two until the patient can handle walking around and all their stuff is stable....good luck
125978
Depends in relation to what. If it's the earth, you could be at rest for a few instants of time before your muscles made you move, maybe to walk or lie down or sit or whatever. However in relation to the sun which is one of the focii of the ellipetical orbit, the earth with us on it is moving along that orbit and takes it a little more than 365 days to complete one revolution. The earth is also rotating around a tilted axis, about 40000 km every 24 hours. The Sun by itself is also moving in a 225 million year orbit around the center of the Milky Way Galaxy of which it is a part, as could the Milky Way around a as yet undetermined obit and period around may be a larger Galaxy or a cluster of Galaxies, which themselves could be moving in another orbit or may be yo-yo back to the big crunch - yes you could be moving even if you were lying supine and still on earth.\n\nI hope that answers your question.
499348
It can take tens of years for this to happen.  I have disinterred a man that had been dead for 70 years and was perfect, they had another viewing for him!!  It all depends on the the embalming, the casket, vault, soil, climate and many other things.  There is no defintive answer, and no one can say how long it will take, because every body is different.
79689
I think a tousand moon years is way more then 1 light seccond.  Not even having to think about it 4 moon years is about 1 light seccond. 1 moon year has to be more then 25k miles.  The moon goes way faster then that. that would make the moon traveling at 79.714 miles per hour and I just dont believe the moon goes that slow. If it took 1000 moon years to travel 1 light seccond.
23177
Time travel is actually 100% possible.  You're time travelling right now, the problem is that you cannot control how to time travel.  \n\nIf you had enough fuel on a spaceship that could go at 99% the speed of light, the time on the spaceship is slowed down dramatically, this is called time dilation, which means your biological clock also slows down, slowing your aging process.  If you come back to Earth by travelling 60000 light-years, you're only 40 years older then, but the Earth and everyone on it is 60000 years older.\n\nTime travelling to the past is currently not possible.
284815
Depends on your perspective.  As you travel closer and closer to the speed of light, time for you will seem to be normal, but you will see it speed up for others who are stationary.\n\nIf you are the one who is stationary, time will seem normal to you, but it will slow down for the one traveling.\n\nAn example - your twin has just been chosen to go on an interstellar trip.  Thankfully you're telepathic and can communicate over any distance.  As she speeds up, you will notice that there are longer and longer times between her transmissions to you, even though she says she'd contacting you at the same time every day.  And when she returns to earth 50 years later, you find she's only aged 10 years! (Robert Heinlein wrote a great novel about just this scenario - "Time for the Stars").\n\nScientists have proven this amazing fact in many experiments. They've put an atomic clock on a fast jet and flown it around the world.  When they returned, the clocks had different times than those on the ground.  But not by much - the clocks were between 50 and 270 nanoseconds different than their stationary counterparts - that's 50 billionths of a second.  Not much - but 500 mph is pretty slow compared to the speed of light.\n\nAnother way this is used in everyday life is the GPS satellites.  This navigation system has to take relativistic effects into account in it's transmission signals in order to get the high accuracy it's capable of. Every GPS satellite has an atomic clock aboard.  Because of the speed of the satellites, a ground observer will see them ticking slower than real time, so the signals have to be adjusted.\n\nTo answer your question - if you traveled around the world at 700 mph for a week, you'd be a few thousandths of a second younger than your friends who stayed behind.