History Of Rockets - Deepstash

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What is rocket science?

History Of Rockets

  • One of the earliest devices that used rocket propulsion was called the aeolipile, designed in the 1st century AD by Heron of Alexandria, and used steam to spin a metal ball.
  • Early prototypes of rockets were produced for firework displays in China in the 13th century, with the real, metal versions coming in the 19th century, used in Navy ships as an upgraded version of cannon.
  • Early rockets use flammable substances like gunpowder that propel it using the thrust of exhaust gases.

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Two emerging technologies may propel NASA and the rest of the world into an era of faster, low-cost exploration that would lead to more exploration and democratise access to the Solar System.

  • A new generation of companies is developing new rockets for small satellites. Rocket Lab has a lunar program for its small Electron rocket, and Virgin Orbit with a group of Polish universities is to launch up to three missions to Mars with its LauncherOne vehicle.
  • At the same time, various components of satellites are being miniaturised.
  • Tiny satellites are no longer theoretical. Two years ago, a pair of CubeSats, called MarCO-A and MarCO-B, launched with the InSight mission. The briefcase-sized satellites deployed their own solar arrays and journeyed to Mars.
Small sats in deep space

NASA had several goals with MarCO. The MarCOs proved that small satellites could thrive in deep space and stream data back home.

A few months after their mission ended, the European Space Agency announced that it would send two CubeSats on its "Hera" mission to a binary system.

Asteroids
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The formation of asteroids

Asteroids are what's left after the formation of our solar system from billions of years ago.

It is believed that the reason why they were formed were because of the birth of Jupiter. Its birth hindered any planetary bodies to form in the space between Mars and Jupiter, which resulted to the small objects that were present to crash onto each other and fragment themselves.

The two theories that back this up are the Nice model and the Grand Tack.

Categorizing asteroids

The different types of asteroids are:

  • Main belt asteroids - Lies in between Mars and Jupiter; holds more than 200 asteroids
  • Trojan asteroids - found outside the main belt; usually orbits larger planets
  • Near-Earth asteroids (NEAs) - circles close to earth; there are three types of NEAs, Apollo, Aten, and Atira
  • The C-type - carbonaceous asteroids
  • The S-type - silicaceous asteroids
  • The M-type - metallic asteroids
  • The V-type - has a basaltic and volcanic crust