1,000m: The typical cruising altitude for hot air balloons!
2,000m: You'd start feeling altitude sickness without acclimatization.
3,000m: Higher than most ski resorts. The air contains about 30% less oxygen.
4,000m: Altitude where water boils at just 86°C instead of 100°C.
5,000m: The typical altitude of Mount Kilimanjaro's summit.
6,000m: Above this, you're in the "death zone" without supplemental oxygen.
7,000m: Only a few hundred meters below Mount Everest's summit!
8,000m: Mount Everest (8,849m) - the highest point on Earth.
9,000m: Higher than any mountain peak. Most birds can't fly this high.
10,000m: Commercial airliners cruise around this altitude.
15,000m: The jet stream flows around here at speeds up to 400 km/h.
20,000m: The stratosphere. Ozone layer protects us from UV radiation.
25,000m: You'd need a pressurized suit. Your blood would boil without one!
30,000m: The SR-71 Blackbird spy plane flew at this altitude.
35,000m: Above 99% of Earth's atmosphere.
40,000m: Felix Baumgartner jumped from 39km for his record skydive.
50,000m: The mesosphere begins. Meteors burn up here!
60,000m: The edge of space is getting close...
70,000m: Nearly at the Kármán line (100km), the official edge of space.
80,000m: Astronauts earn their wings flying above 80km!
90,000m: You're officially in space. Welcome to the thermosphere!
The Moon is about 384,400 km away from Earth. Our space elevator only goes to 100 km!
If you ever wondered where your lost balloons went, at this height a typical party balloon will pop.
Above this altitude is known as the 'death zone', because there isn't enough oxygen for human life.