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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Space to Ground: Rubio's Record Ride: Sept. 29, 2023
Added 77 Views / 0 LikesNASA's Space to Ground is your weekly update on what's happening aboard the International Space Station. Got a question or comment? Use #AskNASA to talk to us.Learn more about the important research being operated on Station:https://www.nasa.gov/iss-scien
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Added 321 Views / 0 LikesAsteroid Fight Club rules.Stay Cool.pictures tell a story & Incubus sings the tale. God bless everyone,TThe Song "Our Love" by Incubus
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Hurricane Nicole is intensifying! The USA Mid-Term Election results are intensifying! & Bitcoin lol.
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Added 321 Views / 0 LikesSpacewalking Cosmonaut Oleg Kononenko had to cut into the insulation of a Soyuz capsule docked to the International Space Station to it after patching a leak on the interior of the spacecraft earlier this year. -- Watch the Spacewalk Live Now: https://www
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Added 135 Views / 0 LikesThe long-delayed James Webb Space Telescope is finally in space! See an Ariane 5 rocket launch it from Guiana Space Center in Kourou, French Guiana on Dec. 25, 2021.Credit: NASA / Arianespace
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Space to Ground: Busy Crew: 09/22/2017
Added 576 Views / 0 LikesSpace to Ground: Busy Crew: 09/22/2017
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Perseverance's wind sensor deployed in latest pics from Mars
Added 220 Views / 0 LikesThe Perseverance rover's Mars Environmental Dynamics Analyzer (MEDA) is set to collect data on wind with the deployment of a sensor on Mar. 1, 2021 (Sol 10). See imagery of the deployment and hear audio of the Martian wind captured by a microphone on Feb.
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Added 72 Views / 0 LikesOn Saturday, October 14, 2023, a 'ring of fire' annular solar eclipse will be visible in the Americas, and you can watch it live even if you are not in the path of the eclipse! Unless you live within a narrow path just 118-137 miles wide in the U.S. — whi
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Wild World Update Mid February 2020:
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Blast Off! ExoMars Mission Launches Aboard Proton Rocket | Video
Added 640 Views / 0 LikesBlast Off! ExoMars Mission Launches Aboard Proton Rocket | Video
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Texas Snow comin'! Double V over the Moon! Comet c/2017 K2! Another Space Debris anti-lottery!?
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Added 602 Views / 0 LikesPerseids 'Attack' On Earth Snapped By NASA Cameras | Video
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OTD in Space - Dec. 20: Mount Wilson Observatory Founded
Added 300 Views / 0 LikesOn Dec. 20, 1904, the Mount Wilson Observatory was founded. This astronomical observatory was the brainchild of the solar astronomer George Ellery Hale. He was a professor at the University of Chicago who was famous for discovering magnetic fields in suns
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Tornado Watch for South East! SnowStorm for Middle East USA! 15 inches of Rain for PNW? & COLD.
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Finding 'better ways to eat in space' is new NASA challenge
Added 252 Views / 0 LikesHumans traveling to the Moon, Mars and beyond aren't going to be able to hit the supermarket for groceries. They will have to have food systems in place. NASA and the Canadian Space Agency are conducting a 'Deep Space Food Challenge' to find creative solu
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CoronaVirus update: California infection & Japan closes all schools until April.
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