No. The atmosphere of Mars is too thin.
NASA is thinking it can.
the reason is that as the balloon gradually goes up the density of air in the upper atmosphere decreases
The key word there is float. There is nothing in space for a hot air balloon to float on.
For the same reason that a beach ball can rise high in the water but can't leave the water. A balloon is floating in air. If there is no air around it, then it has nothing to float in.
The balloons that float usually contain helium in them, which is lighter than air. This enables the balloon to float.
NASA is thinking it can.
No, because the atmosphere would pop the balloon.
The air from your lungs has the same density as the air in our atmosphere. As a result a balloon inflated by a human using their lungs is unable to float.
No, air pressure increases as the balloon goes up, so the balloon will pop and fall to the ground. You can get high up in the atmosphere (but you need a LOT of helium and a balloon that can get VERY big) you will not reach "outer" space beyond the Earth's atmosphere.
the reason is that as the balloon gradually goes up the density of air in the upper atmosphere decreases
Just the density difference between the balloon and surrounding atmosphere is so great that the balloon is able to lift itself and people.
Because the air in the balloon make it float in the atmosphere.
No... it wouldn't even survive the conditions of the upper atmosphere, unless it was a very tough balloon.. even if it could I'm assuming eventually the atmosphere would reduce to a point where it was as dense as helium or hydrogen (the gas I'm assuming would make your balloon float) and your balloon would stop anyway at a maximum altitude. Either way.. after that, the balloon would have to break away from Earth's gravity (not easy) and then somehow cover 382500km or so to get to the Moon itself..
a balloon float on water
Fill a balloon part way with helium, make an animal out of it and have it float.
The key word there is float. There is nothing in space for a hot air balloon to float on.
Yes it will, if it's inside the balloon and hot enough.It actually won't. CO2 is a heavier gas than Earth's atmosphere, so it will sink. Think about it- we breathe out carbon dioxide, and balloons we blow up the normal way don't float.