Outer Space & Universe
Outer Space & Universe
Space, also known as outer space, is the near-vacuum between celestial bodies. It is where everything (all of the planets, stars, galaxies and other objects) is found.
On Earth, space begins at the Kármán line (100 km above sea level). This is where Earth's atmosphere is said to stop and outer space begins. This is not a firm boundary but is a convention used by scientists and diplomats.
Items in space are free to move back and forth; up and down; and left and right. These three dimensions are what make 3D space. Items also move forward through time, which is sometimes called the fourth dimension.
The majority of space contains very little matter and so most of it is a vacuum. Scientists do not know how big space is but we do know that space is extremely big, and is always expanding.
According to the big bang theory, all matter and energy in the Universe was compressed into a very small space. Then it exploded and started expanding. Space is still growing in size today; this means the distance from one galaxy to distant galaxies is getting longer.
Gravity is the force that keeps the Moon in orbit around the Earth and the planets in orbit around the Sun. Gravity can stretch and bend space similar to how a heavy ball placed on a stretched sheet of rubber will cause the rubber to stretch. The scientist who discovered that space can bend is named Albert Einstein. How gravity bends space is part of his theory of general relativity.
Astronauts, Cosmonauts, Taikonauts and Spationauts
An astronaut is any person who is trained by NASA to travel and perform tasks in space. Although the space traveler may not necessarily be a United States citizen, each astronaut does go through a rigorous training regiment by the National Aeronautics and Space Administration. Other space travelers go by other names then astronaut depending on their country of origin.
In the United States, astronaut is derived from the Greek words ástron (star) and nautis (sailor). While, in Russia, a space traveler goes by the name космонавт (English: cosmonaut), which is derived from the Greek words kosmos (universe) and nautis (sailor). Westerners call a space traveler from China a taikonaut, based on the 1998 writings of Chiew Lee Yik and Chen Lan where the term tàikōng (great emptiness), Chinese for “space”. In China, the term yuháng yuán (universe navigator) is used for space traveler.
Only the United States of America (United States), Russia (earlier, the Union of Soviet Socialist Republics), and the People’s Republic of China (China) have sent manned spacecraft into space. Other countries have assisted these countries by sending their own space travelers on space missions. For instance, a French space traveler is called a spationaut (from the French word spationaute), which is derived from the Latin spatium (space) and Greek nautis (sailor). (plural in Greek nautes = sailors)
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A Soyuz rocked launched the uncrewed supply ship Progress 72 from the Baikonur Cosmodrome in Kazakhstan on April 4, 2019. It is delivering more than 3.5 tons supplies to astronauts on the station. - Russian Cargo Ship Launches on Superfast Trip to Space S
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SpaceX completed the first tethered hop of their Starhopper vehicle on April 3, 2019 in Boca Chica, Texas. (video is looped several times)Credit: SPadre.com
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The Universe is a strange place.God bless everyone,Thttps://www.paypal.me/thornewssend mail to5430 Birdwood Rd. #416Houston, Tx 77096the articlehttps://www.sciencemag.org/news/2019/04/ancient-snowball-earth-thawed-out-flashMore than half a billion years a
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Right after the Universe started with the Big Bang, the cosmos was dark. Only the first stars created millions of years later brought light. These first stars and their radiation drastically changed the Universe during what is known as the epoch of reioni
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Parkinson’s disease affects more than 5 million people on Earth. Research on the International Space Station could provide insight into this chronic neurodegenerative disease and help scientists find ways to treat and prevent it. In this video, NASA astro
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NASA administrator talks about the challenges of using rockets other than Space Launch System (SLS) to get to bootprints back on the Moon by 2024.Credit: NASA
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24 pieces of debris from the anti-satellite weapon test that India performed in late March 2019 has been tracked "above the apogee of the International Space Station," according to NASA administrator Jim Bridenstine. The ISS crew is safe. Credit: NASA
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NASA tested Mars helicopter technology in the Jet Propulsion Laboratory's Space Simulator. -- More about the test: https://www.space.com/nasa-mars-helicopter-aces-flight-tests.htmlCredit: NASA/JPL-Caltech
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NASA's Space to Ground is your weekly update on what's happening aboard the International Space Station. Got a question or comment? Use #spacetoground to talk to us.Learn more about the important research being operated on Station:https://www.nasa.gov/iss
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NASA astronauts Christina Koch and Nick Hague are upgrading batteries outside the International Space Station on Mar. 29, 2019. -- Watch the Spacewalk Live: https://www.space.com/Credit: NASA
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Rocket Lab's Electron rocket launched the Radio Frequency Risk Reduction Deployment Demonstration (R3D2) spacecraft for the U.S. Defense Advanced Research Projects Agency (DARPA). It launched from New Zealand's Māhia Peninsula today (March 28) at 7:27 p.