## Why do you need to go so fast to go to space?

The Space Station hasn’t escaped Earth’s gravity at all; it’s experiencing about 90\% the pull that we feel on the surface. To avoid falling back into the atmosphere, you have to go sideways really, really fast. The speed you need to stay in orbit is about 8 kilometers per second.

Why can’t you enter the Earth’s atmosphere slowly?

To skim the Earth’s atmosphere in orbit, your spacecraft has to travel at least as fast as 7.8 km / second, or about 17,500 mph. If you slow down by a tiny amount below that speed, even by just a few hundred miles per hour, as you skim the atmosphere, you will fall too far towards Earth before you complete your orbit.

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### How fast must you go to escape Earth’s gravity?

If you want to completely escape Earth’s gravity and travel to another moon or planet, though, you need to be going even faster – at a speed of at least 7 miles per second or about 25,000 miles per hour.

Can you go to space slowly?

Yes. So long as we have enough energy to continue climbing slowly, we can reach outer space. But to do that, we need to build a tall ladder from earth to the moon for example. That’s where the issue of logistics and energy comes in.

#### Is it possible to leave Earth slowly?

At 11km/s you can successfully break orbit and escape the gravitational pull of the Earth. At 10km/s the Earth will eventually slow down your ascent till you begin falling back towards the ground. These values are at ground level. Once in orbit the escape velocity is lower than 11km/s.

What does it feel like to re enter Earth?

Your balance system is turned upside down, and you feel very dizzy. When you stand up for the first time, you feel about five times heavier than you expect. All of this can be unsettling, and nausea is not unusual. After a long-duration flight of six or more months, the symptoms are somewhat more intense.

## Is it possible to outrun gravity?

A: Yes you can. It is said that in order for an object or a projectile to leave Earth’s gravitational pull, it must reach Earth’s escape velocity, meaning reach a speed of 7 miles per second(~11 km per second).

Is Earth losing water to space?

Yes, but the water isn’t “boiling” or being lost in the form of water vapor. Water molecules in the upper atmosphere get hit by UV and dissociate into oxygen and hydrogen. The hydrogen atoms are light and move fast enough for a fraction to achieve escape velocity, so the hydrogen is lost to space, like helium.

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