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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03:13
SpaceX Crew Dragon's performance was 'rock solid,' says Demo-2 commander Doug Hurley
Added 231 Views / 0 LikesNASA astronaut Doug Hurley explains just how the Crew Dragon spacecraft performed in its first crewed flight in response to a question from Ars Technica's Eric Berger. -- 'It sounds like an animal': NASA astronauts describe the Crew Dragon re-entry experi
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03:14
Space to Ground: Final Flight: 08/21/2020
Added 231 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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02:41
Rubin Observatory's giant camera snaps first 'in-lab' images
Added 231 Views / 0 LikesThe world's largest digital camera has been assembled and captured its first images. The camera will be used by the Vera C. Rubin Observatory in Chile for the Legacy Survey of Space and Time. -- 3,200 megapixels! The camera heart of future Vera Rubin Obse
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01:27
See 'crescent' Mars and more in new pics from Chinese probe
Added 231 Views / 0 LikesChina's Tianwen-1 probe captured imagery above the northern and southern hemispheres of Mars. Previously released imagery of craters, dunes, mountain ridges and the Red Planet's north polar cap are shown as well. Credit: Space.com | footage courtesy: Chin
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02:06
Now’s the Time for Science in Space
Added 230 Views / 0 LikesNow’s the Time for Science in Space
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01:27
'Strangely lopsided' spiral galaxy captured by Hubble
Added 230 Views / 0 LikesThe Hubble Space Telescope has captured an amazing view of spiral galaxy NGC 2276. It is located 120 million light-years away from Earth.Credit: ESA/Hubble, NASA, Digitized Sky Survey 2, A. Block/Mt. Lemmon SkyCenter/University of Arizona, E. Slawik, N. R
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01:12
Radio signal from Venus turned into sound by NASA
Added 230 Views / 0 LikesNASA Parker Solar Probe flew through Venus' upper atmosphere in July 2020. It discovered a 'natural, low-frequency radio emission ' that has been sonified by NASA.Credit: NASA's Scientific Visualization Studio/Mark SubbaRao/Glyn Collinson
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08:22
Super Typhoon Surigae! South Flood USA! Geomagnetic Storms! 3 Sunspots! CME! Snow! Volcanoes!
Added 230 Views / 0 Likescongratulations, you will probably survive Eris week.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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02:32
SpaceX deploys Starlink satellites, catches nosecone half
Added 230 Views / 0 LikesWatch SpaceX deploy 58 Starlink satellites after a successful launch on Aug. 18, 2020. Also, the private spaceflight company's Ms. Tree ship caught a payload fairing half from the mission in the Atlantic Ocean. Full Story: https://www.space.com/spacex-sta
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04:12
SpaceX Crew-1 spacecraft to change docking ports for Crew-2 arrival
Added 230 Views / 0 LikesSpaceX Crew-1 spacecraft will need to move to another International Space Station docking port to make way for the the arrival of the Crew-2 spacecraft. -- SpaceX is ready to launch more astronauts with Crew-2 mission: https://www.space.com/spacex-crew-2-
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10:24
Volcano & Earthquake upticks! Ides of March Storm USA & lots of Storms for Europe!
Added 230 Views / 0 Likesplus, snow shovels for florida hail.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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01:08
Chinese probe snaps Mars' north pole, craters and more in high-res
Added 230 Views / 0 LikesChina's Tianwen-1 probe has captured new high-resolution imagery of Mars' north polar cap, craters, mountain ridges and dunes. Credit: Space.com | footage courtesy: China Central Television | produced & edited by [Steve Spaleta](http://www.twitter.com/ste
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23:50
Space Chat! The History of Women in Space
Added 230 Views / 0 LikesMarch is women’s history month and to honor it, Chelsea is talking about the many women who brought humanity to space. From Katherine Johnson to Poppy Northcutt, Mae Jemison, Peggy Whitson and more! -- Women in space: https://www.space.com/16143-women-spa
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12:17
Catastrophic Flooding in Germany & Belgium! NYC Sinkhole! Horrible Wildfires! Canada Tornadoes!
Added 229 Views / 0 Likesthis episode of THORnews is sorta doomy, y'all.Please attempt to stay calm & cool & keep a senseof humor during the 2nd half of 2021.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric
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17:18
Volcano Madness. Cat 2 Cyclone landfall Australia Severe Weather North East & Florida Aries New Moon
Added 229 Views / 0 LikesAsteroid fight club is All next level All the time.Go Team.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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01:07
Hurricanes Dorian and Juliette Seen From Space on Sept. 4
Added 229 Views / 0 LikesHurricanes Dorian (US east coast) and Julliette (off the US west coast) were capture by NOAA's GOES satelltes on Sept. 4, 2019. Story: [Astronauts in Space 'Feel the Power' of Hurricane Dorian as NASA's Florida Spaceport Braces for the Storm](https://www.
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07:15
223 MPH wind gust recorded as Category 4 Hurricane Laura approaches Lake Charles Louisiana Landfall.
Added 229 Views / 0 LikesMay everyone in the path of the storm find the miracle they need in their moment of need. God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.pat
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01:13
See amazing views of galaxies and nebulas using 'multi-wavelength approach'
Added 229 Views / 0 LikesThe Chandra x-ray observatories and other telescopes have joined forces to deliver a "multi-wavelength approach" to view and study our Universe. See some of the highlights. Credit: NASA/CXC/A. Hobart