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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00:55
SecDef Mattis: Space is Becoming a ‘Contested Warfighting Domain’
Added 316 Views / 0 LikesThe United States Secretary of Defense Jim Mattis talks about Space becoming a war fighting domain prior to Vice President Mike Pence's speech that revealed a plan for a new military branch called the 'Space Force'. -- Read more: https://www.space.com/414
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01:40
Air Force Space Plane Lands After 718 Days - Raw Video
Added 617 Views / 0 LikesAir Force Space Plane Lands After 718 Days - Raw Video
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03:46
How to use the COVID-19 Earth observation dashboard
Added 339 Views / 0 LikesNASA, ESA and JAXA have partned to deliver an Earth-observation dashboard for the COVID-19 pandemic. Data from changes seen from space are highlighted. - Earth-observation dashboard: https://www.eodashboard.org/Credit: NASA Goddard Space Flight Center
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04:47
Frankenstein Tropical Storm Bill Nye upgraded to DEADLY.
Added 593 Views / 0 LikesFrankenstein Tropical Storm Bill Nye upgraded to DEADLY.
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09:39
SpaceX launches Transporter-5 rideshare mission, booster lands in Florida
Added 132 Views / 0 LikesSpaceX's Transporter-5 mission launched 59 small satellites from Cape Canaveral Air Force Station in Florida on May 25, 2022. The Falcon 9 rocket's first stage landed at the Cape's Landing Zone 1. Credit: SpaceX
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00:15
Word Bank: Dark Matter
Added 145 Views / 0 LikesMore information and download options: http://esahubble.org/videos/wordbank_dark-matter/Credit:ESA/Hubble (M. Kornmesser & L. L. Christensen)
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01:22
Asteroid Named After Aretha Franklin - See Its Orbit
Added 340 Views / 0 LikesAsteroid 249516 Aretha was named after the 'Queen of Soul' Aretha Franklin. Watch it orbit the Sun for the next 10 years. -- Paying Respect: Asteroid Honors Aretha Franklin's Unforgettable Legacy: https://www.space.com/41512-aretha-franklin-asteroid.htmlC
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00:54
Soyuz Rocket Launches New International Space Station Crew | Video
Added 641 Views / 0 LikesSoyuz Rocket Launches New International Space Station Crew | Video
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09:38
Astronomers discover a giant Nibiru type planet made of Styrofoam!
Added 538 Views / 0 LikesAstronomers discover a giant Nibiru type planet made of Styrofoam!
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01:31
Space tourists doing spacewalks? How does Space Station crew feel about it?
Added 233 Views / 0 LikesRussia is selling seats to the International Space Station to space tourists and including spacewalks. NASA astronaut Bob Behnken talks to Marcia Dunn from the Associated Press about it. Credit: NASA
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01:09
Methane On The Ice Dwarf Pluto, Plus Dancing With Charon | Time-Lapse Video
Added 702 Views / 0 LikesMethane On The Ice Dwarf Pluto, Plus Dancing With Charon | Time-Lapse Video
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01:03
China's Long March 2C rocket launches Geely-01 constellation satellites
Added 139 Views / 0 LikesThe Long March 2C launched nine Geely-01 constellation satellites on June 2, 2022 from Xichang Satellite Launch Center. They will be used to test technology for the "navigation of intelligent connected vehicles as well as the vehicle-mounted devices/cellp
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08:04
Blastoff! Amazon's first 2 internet satellites launched atop Atlas V rocket
Added 80 Views / 0 LikesA United Launch Alliance Atlas V rocket launched two prototype satellites for Amazon's Project Kuiper broadband constellation from Florida's Cape Canaveral Space Force Station on Oct. 6, 2023. See the first six minutes of the launch and a replay here. Cre
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14:12
Red Alert! Florida, Georgia & Carolina floods this week. More Monsoon troubles & more earthquakes.
Added 162 Views / 0 Likescongratulation on surviving, july 2021.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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01:06
New Carina Nebula Image and 3D Animation Unveiled By ESO | Video
Added 581 Views / 0 LikesNew Carina Nebula Image and 3D Animation Unveiled By ESO | Video
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13:40
The Sunbaby or maybe Planet X Sedna or Eris. It's changing the Climate.
Added 634 Views / 0 LikesThe Sunbaby or maybe Planet X Sedna or Eris. It's changing the Climate.
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01:03
'Godzilla' Saharan dust plume's aerosols tracked from space
Added 286 Views / 0 LikesAerosol data has been collected by the Copernicus Sentinel satellite on the unusually large Saharan dust plume that has traversed the Atlantic Ocean, nicknamed "Godzilla." Credit: Space.com / Contains modified Copernicus Sentinel data (2020), processed by