Suppose that our space is hyperspherical and a fleet of space ships flies directly away from(see details)?
963310
At the point directly opposte us on the hypersphere. Look at what happens on a typical sphere for analogy.
1047344
Solar Sails.\n\nA spacecraft would deploy a huge sail to capture the solar 'wind', the constant stream of solar particles. A rather slow but economical method to move beyond Earth....
18267
Space, the final frontier.
1173168
Space Transportation System
730461
near zero. \n\nExcept that there is some mass in space, - like space dust. And there's the solar wind pushing outwards.
727320
If you were truly flying straight, you would eventually fly into outer space. Planes do follow the curvature of the earth--usually by maintaining a certain altitude.
241019
Space rips would be things like wormholes and black holes.\nThey are singularities produced by large masses.
9800
Well, I certainly wouldn't have to worry anymore about whether or not I turned the coffee maker off! Seriously, if the Earth stopped spinning on it's axis, there would be much larger factors at work & I'd be looking for the quickest way to get out of what was going to become an extremely unstable area of space! After all, assuming that I had a craft capable of long range travel, it might be left up to myself & whomever else might also be out on other missions to find a way to carry on the human race :)\n\nWhen I read the question the first thing I thought of was, "Pause.......BOOM!"
474119
Space does not come in particles.\n\nThere is no aether.\n\nQuantrons do not exist.\n\nBut apart from that I'd say you're probably almost right.
1059573
Sure if you mean a robotic space craft. We could even send a human, if we don't care that he would die shortly. As far as sending a craft with a living human, we don't have that technology within a reasonable price range.
548934
No! Even without virtual particles, most of which self-annihilate almost immediately, the overall density of 'empty space' in the universe has been calculated to be about 2.11^ minus 29 kg/cubic meter.
315403
You would generate a ship capable of providing a mini-ecosystem capable of sustaining a self-replicating crew.  Astronauts have kids who become astronauts down the ages until the destination is reached.  \n\nAs far as drive mechanism, currently NASA is working on finalizing an ION drive that gets stuff to its destination faster than our current thruster tech by propelling them at an increasing rate of acceleration.
461276
It would probably sound something like this:\n\n"AAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHH"\n\nsince we'd all just fly off the surface of the Earth and shoot into space.
331575
The earth travels through space.\nIt supports life.\n\nYou could call it a space ship. Yes.\n\nWelcome aboard Space Ship Earth
779101
Yes, If the mass of the everything doubles than whole universe will get shrunk and the heavenly bodies in the space will collide and get destroyed. because more the mass more the gravitation force. chances gettin hitted by a asteroid will increase. People will find difficult to walk, aeroplane will crash down and satellites may fall down. we've to give the rockets more spped currentl which is 11.2 km/s. so many things happen.
964622
If the only things involved in the position of everything in space were momentum and gravity then perhaps all the planets and galaxies and superclusters could have enough momentum to fly away forever like something can have enough momentum to have an escape velocity from the earth.  Also if everything didn't have enough momentum then it would eventually all fall back in together into a "big crunch".\n\nThere is another factor at play, though, in the expansion of the universe called "dark energy" which is something that causes space itself to expand!  So as space itself expands everything in it is carried along outwards with the expansion.  Imagine space is a table and some crumbs on it are galaxies.  As the whole table expands the little crumbs will spread apart from each other.\n\nDark energy is very hard to study and is not well understood.  The sources I cited give good overviews and should give you a better understanding.
892719
It's radial motion away from us - orbital would be around some central point, which the universe doesn't have (a gravitational center, at least) - although galaxies usually have some particular velocity within their clusters.