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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Superheated Solar Plasma Jets - How Do They Form?
Added 618 Views / 0 LikesSuperheated Solar Plasma Jets - How Do They Form?
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Pan of NGC 346
Added 86 Views / 0 LikesThis video features NGC 346, one of the most dynamic star-forming regions in nearby galaxies, as seen by the NASA/ESA/CSA James Webb Space Telescope.NCG 346 is located in the Small Magellanic Cloud (SMC), a dwarf galaxy close to our Milky Way.More informa
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Red Alert! 10 Days of Wild & Dangerous Weather for USA & Canada has begun! + Solar Storm?
Added 251 Views / 0 LikesYOU ARE AWESOME.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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Saharan dust cloud on the move over Atlantic in time-lapsed space view
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Space Station Crew Sends Christmas Greetings to Earth | Video
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Space to Ground: September Spacewalks: 09/10/2021
Added 223 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 213 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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Largest Unnamed Solar System Body Spied By Space Telescope | Video
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Do Astronauts Wear Diapers During Spacewalks? Space Chat Replay
Added 420 Views / 0 LikesIn case you missed it, last week's live 'Space Chat' touched on the very interesting topic of spacewalks! Here's a snippet from that chat. Catch us every Friday, 1:00p EDT live on Space.com's Facebook page! https://www.facebook.com/spacecom/
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Hurricane Dorian is now Category 3 & the New York/New Jersey Hurricane is on the board.
Added 457 Views / 0 Likes15% chance Dorian curves our to Sea, 30% chance Dorian becomes a Category 5.The next 8 weeks of Peak Hurricane Season are going to be wild.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096HTTPS://WWW.PAYPAL.ME/THORNEWSwww.venmo.com/TEr
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Relive NASA's Spirit and Opportunity rovers landing on Mars on 20th anniversary
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Why President Trump & the Americas cannot build "The Wall".
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Living in space! Water, ball throwing, cords and more explained by ISS astronaut
Added 161 Views / 0 LikesNASA Expedition 68 Flight Engineer Nicole Mann answers student questions from the Boys and Girls Club of the Flathead Reservation and Lake County in Montana. Topics include, water behavior, hair washing, ball throwing, cord management and more. Credit: NA