People believe a vacuum will make things fall faster on Earth but then they go and tell you that they float in space. Can you see the con?
The con is gravity.
Why is it that you don't know anything about gravity, as shown in this statement, yet you deny it?
Why are you misleading Yendor, and a lot of other people?
No scientist, no NASA scientist, no modern scientist has ever claimed that in space there is no gravity. That is what you are claiming by "float in space" right? If not, disregard this. But you have just treaded onto the path of a Kerbal Space Program fanatic, and you will not get away with it.
In movies, they often depict space travel from Earth with a gravity cutoff, where all of a sudden, after they reach a certain altitude, all gravity goes away. This is not true, and it's clear Sceptimatic hasn't done any research on the subject. The gravity of Earth actually extends much further than the even the moon. The gravity of Earth on the International Space Station is virtually the same that it is on the ground. So, how can this be? Why do people float in space? Well, as someone else has pointed out, the moon, and the ISS are in orbit. All spacecraft in space are. Their lateral velocity is actually just high enough to essentially "miss" the Earth as they fall. Think about throwing a ball on the moon (no air resistance in this scenario, makes things a bit easier). You throw the ball with not much force, and it falls a few hundred feet away. Every time you throw the ball, you add more force and it goes further. Now, you throw the ball with so much force, that its velocity is high enough to circle the entire moon, and it will continue doing so, until something stops it (a human does not actually have the strength to propel a ball to the velocity required to achieve orbit on the moon at just 2 meters in altitude, this is just an example).
The only reason astronauts "float" in space, is, humorously, because they are falling with their spacecraft. They both have the same velocity, so it just looks like they are floating. In reality, both the ISS and the astronauts inside are moving a nice smooth 7.66 kilometers per second around the world.
Where does the lateral velocity come from?
If you've ever watched a rocket launch, never do the rockets go straight up. They slowly swing off to the north, west, east, south, or anything in between, depending on what their trajectory calls for. Eventually, rockets end up thrusting parallel to the Earth, pointing around towards the horizon. This all increases their lateral velocity to establish orbit, or else they would fall right back down to Earth, no matter what altitude they are in. The lateral velocity comes from the boosting of the rocket, simply, laterally.