Heliocodex

Learn / Ideas that run through all of it

Exploring space

One of the ideas that runs through every place the lessons go. 4 lessons, in the order to read them.

  1. Start hereHow a rocket worksA rocket moves by throwing hot gas out of its back. Reaching orbit takes so much speed that nine tenths of a big rocket is fuel, and most of it is dropped on the way.First look · How it works
  2. The first journeys: Sputnik, Gagarin and the MoonFrom a beeping metal ball in 1957 to twelve people on the Moon took fifteen years. Then nobody left Earth orbit for more than half a century, until 2026.First look · How it works
  3. Robot explorersNo person has been further than the Moon. Everything known from close up about the planets, their moons, comets and asteroids was found by machines sent in our place.First look · How it works
  4. Living in spacePeople have lived aboard the International Space Station without a break since November 2000. Floating is fun, but the human body was built for the ground.First look · How it works

Outline Still to be written here

  1. Back to the MoonThe plans to return people to the Moon, and why.
  2. On to MarsWhat it would take to send people to Mars and bring them home.
  3. Where spacecraft are parkedThe orbits and balance points that missions use, and why.