How many miles is it from the ground to space?

Answer 1

There is no "boundary" between where Earth/air stops and space begins. The atmosphere gradually becomes less and less dense the farther away from Earth you go...at some point, we just start calling it "outer space". Usually, this is about 100 km above the surface.

In response to "JOHN L",
There is no point you cross and gravity suddenly turns off.
Gravity still very much exists in space...you don't suddenly become weightless at a given height. The effect of weightlessness arises when the object is experiences a constant free fall motion as it orbits the Earth. You could orbit the Earth at any height you want (although some altitudes are more advisable than others)....60 miles, 100 miles, 1 mile, ...., one just needs to be traveling around the Earth at a fast enough angular velocity so that the objects weight equals the centripetal force it experiences, causing the object to be in a circular orbit around the Earth.

Answer 2

Technically, the Earth is an object in space, therefore, you're already there.

However, I assume you mean how far you have to go out of the atmosphere to get to the vacuum of space. The atmosphere dissipates as a limit: that is, it never approaches exactly zero. As your altitude increases, you find less and less atmosphere, but there is no surface that can be drawn to contain the entirety of Earth's atmosphere, therefore there really isn't a concrete border for space.

Answer 3

The international accepted height of the Air/Space boundary is 100 km or 62.5 miles up.

Answer 4

space starts 550 miles above the earth.

Answer 5

When you are considered an astronaut, usually it is about 50 Miles above earth.

Answer 6

328,084 Ft:= 62.137 miles from the ground to space

Milestones on the way to space
Sea level - 100 kPa (1 atm; 1 bar; 760 mm Hg; 14.5 lbf/in²) of atmospheric pressure
4.6 km (15,000 ft) - FAA requires supplemental oxygen for aircraft pilots and passengers.
5.0 km (16,000 ft) - 50 kPa of atmospheric pressure
5.3 km (17,400 ft) - Half of the Earth's atmosphere is below this altitude.
8.8 km (29,035 ft) - Summit of Mount Everest, the highest mountain on Earth
16 km (52,500 ft) - Pressurized cabin or pressure suit required.
18 km (59,000 ft) - Boundary between troposphere and stratosphere
20 km (65,600 ft) - Water at room temperature boils without a pressurized container. (The popular notion that bodily fluids would start to boil at this point is false because the body generates enough internal pressure to prevent it.)
24 km (78,700 ft) - Regular aircraft pressurization systems no longer function.
24.7 km - Altitude record for manned balloon flight
32 km (105,000 ft) - Turbojets no longer function.
45 km (148,000 ft) - Ramjets no longer function.
50 km (164,000 ft) - Boundary between stratosphere and mesosphere
80 km (262,000 ft) - Boundary between mesosphere and thermosphere
100 km (328,084 ft) - Kármán line, defining the limit of outer space according to the Fédération Aéronautique Internationale. Aerodynamic surfaces no longer function due to lack of atmospheric pressure.
120 km (400,000 ft) - First noticeable atmospheric effects during reentry from orbit
200 km - Lowest possible orbit with short-term stability (stable for a few days)
350 km - Lowest possible orbit with long-term stability (stable for many years)
690 km - Boundary between thermosphere and exosphere

Answer 7

62 miles to weightlessness.

Answer 8

Less than .000000001 (approx.) from the ground.

Answer 9

Just divide any number with zero and then you will be knowing it.

Answer 10

too many