Visit to the Hermann Oberth museum
A little sneak peak into the exposition at https://www.raumfahrtmuseum.de/
Books about Space
Motivation Over the years I gathered some nice books about space exploration, rocketry and space in general. The List To Space and Back Endurance: My Year in Space, A Lifetime of Discovery Von Braun: Dreamer of Space, Engineer of War Elon Musk: Tesla, SpaceX, and the Quest for a Fantastic Future Flying to the Moon:…
Currently Planned Rocket Launches
Upcoming 01. November 2022 JPSS-2 Already started 27. September 2022 NASA Artemis Lunar Mission 21. April 2022 Starlink Group 4-14 23. April 2022 SpaceX Crew-4 30. March 2022 Axiom Mission 1 (or Ax-1) s a planned SpaceX Crew Dragon mission to the International Space Station (ISS). It will send four people to the ISS for…
What is the Karman line?
tl;dr; The Karman line defines the edge of space. It is set to 100km above the Earth’s mean sea level and separates aeronautics from astronautics. So to be an astronaut you have to travel higher than 100km from Earth’s surface. Why is that? To fly with a conventional airplane you need the air to generate…
What is LEO?
LEO stands for Low Earth Orbit. It ranges from 200km to 2000 km. The ISS orbits the earth between 370km and 460 km. Due to atmospheric drag the orbit decreases over time The Hubble Telescope orbits a bit higher at 545km to 549km Other orbits Overview Satellite Orbit ISS 400km Hubble 545km Starlink 550km Iridium…
What is the Harvard spectral classification?
1901 Annie Jump Cannon constructed this classification: Class Temperature in K Color O >= 30000 blue B 10000 – 30000 blue white A 7500 -10000 white F 6000 – 7500 yellow white G 5200 – 6000 yellow K 3700 – 5200 light orange M 2400 – 3700 orange red Mnemoic: Oh, Be A Fine Galaxy,…
What are the fundamental quantities?
tl;dr; Length, time and Length measured in meters (1m), symbol L Time measured in seconds (1s), symbol T Mass measured in kilograms (1kg), symbol M Derived quntities e.g. [Speed] = [L] / [T]
What is Beta decay?
Beta decay is the process where a nucleon decays into either an electron or a positron. β− decay (electron emission) n → p + e− + ν A neutron decays into proton, an electron and an anti-neutrino. β+ decay (positron emission) p → n + e++ νe A proton decays into a neutron, a positron…