Virgin Galactic wants new employees to stay for at least four years, but investors aren't so sure they want to wait that long.Things are not looking great for Virgin Galactic (SPCE -14.19%).Since confirming its decision to run a 1-for-20 reverse share split last week (shrinking its share count by 20x and artificially pumping up its share price by 20x), the space tourism company's share price at first seemed to leap the expected 20 times to $14.80 -- but then it resumed falling.Through 10:35 a.m. ET Tuesday, ...