How far can a Helium ballon travel into space?

Question

before it comes back down to earth?

Answer 1

The highest altitude ever reached by an unmanned helium balloon was 51820 m. At some point, the decreasing density of the air matches the displacement of the balloon and buoyancy reduces to a value that keeps the balloon at that altitude.
This is far from being space (which officially begins twice higher still) as one needs to still be in the atmosphere just to have buoyancy. A balloon at that altitude can remain there as long as it does not leak its helium, which it does eventually.

Answer 2

The theoretical limit for a helium balloon is 140,000 feet; beyond that, the density of the air is less than helium. The current record is 113,740 feet.

Answer 3

a balloon will never travel in space. they explode after a certain height which depends on the material from which is made, internal pressure and temperature rise due sun. This because the gas from inside expands as the outside presure decrease. If the balloon will not stop, like said, until the critical height is reach, it will explode.

special balloons can reach 30km high.

Answer 4

a helium balloon goes upwards because the density of helium is less than air and therefore is lighter.... as we go up, the air becomes less dense. therefore, the helium balloon will go up to the height where the density of the air is equal to the density of helium.

Answer 5

so some distance the furthest we've long previous is around 3 hundred,000 kilometers this is a coarse determine for the gap from the Earth to the Moon. If we had the skill to holiday quicker in area or delay our nutrition and oxygen furnish could ought to bypass lots better.

Answer 6

first it doesnt come back and second it doesnt get to space, if it did the emptyness would tear it apart

Answer 7

it depends on the weight of the passanger on it.