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This is an audio version of the Wikipedia Article: https://en.wikipedia.org/wiki/Spaceflight 00:01:35 1 History 00:05:01 2 Phases 00:05:10 2.1 Launch 00:06:43 2.2 Reaching space 00:07:42 2.2.1 Alternatives 00:08:30 2.3 Leaving orbit 00:11:53 2.4 Astrodynamics 00:12:38 2.5 Transfer energy 00:13:09 2.6 Reentry 00:13:56 2.7 Landing 00:14:29 2.8 Recovery 00:15:03 3 Types 00:15:12 3.1 Uncrewed 00:16:29 3.1.1 Benefits 00:17:32 3.1.2 Telepresence 00:18:23 3.2 Human 00:19:14 3.3 Sub-orbital 00:21:15 3.4 Point-to-point 00:22:30 3.5 Orbital 00:23:07 3.6 Interplanetary 00:23:30 3.7 Interstellar 00:24:54 3.8 Intergalactic 00:25:17 4 Spacecraft 00:25:48 4.1 Propulsion 00:26:14 4.2 Launch systems 00:26:30 4.2.1 Expendable 00:26:46 4.2.2 Reusable 00:29:40 5 Challenges 00:29:49 5.1 Space disasters 00:30:54 5.2 Weightlessness 00:31:40 5.3 Radiation 00:32:13 5.4 Life support 00:33:14 5.5 Space weather 00:34:43 5.6 Environmental considerations 00:35:53 6 Applications Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. Listen on Google Assistant through Extra Audio: https://assistant.google.com/services/invoke/uid/0000001a130b3f91 Other Wikipedia audio articles at: https://www.youtube.com/results?search_query=wikipedia+tts Upload your own Wikipedia articles through: https://github.com/nodef/wikipedia-tts Speaking Rate: 0.8042171608583842 Voice name: en-GB-Wavenet-B "I cannot teach anybody anything, I can only make them think." - Socrates SUMMARY ======= Spaceflight (also written space flight) is ballistic flight into or through outer space. Spaceflight can occur with spacecraft with or without humans on board. Examples of human spaceflight include the U.S. Apollo Moon landing and Space Shuttle programs and the Russian Soyuz program, as well as the ongoing International Space Station. Examples of unmanned spaceflight include space probes that leave Earth orbit, as well as satellites in orbit around Earth, such as communications satellites. These operate either by telerobotic control or are fully autonomous. Spaceflight is used in space exploration, and also in commercial activities like space tourism and satellite telecommunications. Additional non-commercial uses of spaceflight include space observatories, reconnaissance satellites and other Earth observation satellites. A spaceflight typically begins with a rocket launch, which provides the initial thrust to overcome the force of gravity and propels the spacecraft from the surface of the Earth. Once in space, the motion of a spacecraft – both when unpropelled and when under propulsion – is covered by the area of study called astrodynamics. Some spacecraft remain in space indefinitely, some disintegrate during atmospheric reentry, and others reach a planetary or lunar surface for landing or impact.
