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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07:09 New
July Heat Wave & 3 Days of Severe Weather & a look at Europe Weather
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12:43 New
SpaceX Demo-2 launch - Watch NASA astronaut's reaction aboard Space Station
Added 15 Views / 0 LikesNASA astronaut Chris Cassidy watched the launch of the Space Demo-2 mission from the International Space Station. Cassidy also had a lot of work to do preparing for their arrival. See highlights here. -- SpaceX's historic Demo-2 Crew Dragon astronaut test
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12:00 New
CHIRON GOES STATION: asteroid fight club astrology & mythology
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09:28 New
Prepare for a Weeks Long Heat Wave! Tropical Storm Fay Landfall! More Severe Weather!
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04:26 New
Solar Storm to hit Earth July 14th!?! Probably.
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05:17 New
Video from Space - Weekly Highlights: Week July 5, 2020
Added 42 Views / 0 LikesVideos featured: Comet C/2020 F3 (NEOWISE) was seen from Earth and space, China launched 3 rockets in less than a week carrying 4 satellites, ESA has been tracking the aerosols from the Saharan dust plume.Comet NEOWISE could give skywatchers a dazzling sh
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12:53 New
Behind the Scenes in Space During Historic SpaceX DM-2 Launch and Docking
Added 25 Views / 0 LikesYou saw history made with the first crewed launch and docking of the SpaceX Crew Dragon, but you didn’t see the flurry of activity on board the International Space Station…until now. Join Expedition 63 Commander Chris Cassidy and his crewmates as they pre
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01:13 New
When are the SpaceX Demo-2 astronauts coming home? Update from Space Station
Added 21 Views / 0 LikesNASA astronaut Bob Behnken gives an update on the SpaceX Demo-2 mission's return to Earth in an interview with USA Today. -- SpaceX's historic Demo-2 Crew Dragon astronaut test flight: Full coverage (https://www.space.com/spacex-crew-dragon-demo-2-test-fl
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02:59 New
Space to Ground: Dragon's Den: 07/10/2020
Added 27 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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07:31 New
10 Cosmic Paradoxes - Multiverse? Dimensions? Are We Alone? and more!
Added 26 Views / 0 LikesHow many dimensions are there? Is there a 'multitude' of Universes? Is there a way out of a black hole? The European Southern Observatory tackles these "Fascinating Paradoxes" and more. Credit: ESO
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14:27 New
AMAZING Minnesota Tornadoes! Severe Weather Danger Triangle! Tropical Storm Fay! Heat Wave!
Added 20 Views / 0 LikesIt's on of them days! Stay cool.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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08:23 New
Boom! Large Coronal Mass Ejection! & the Sun gettin' Jiggy Wit It.
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09:24 New
Comet F3 NEOwise grows a blue Ion Tail in the July Planet Parade!
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06:30 New
90% Chance of Tropical Storm Fay!
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01:04 New
Blastoff! China launches APSTAR-6D telecommunications satellite
Added 29 Views / 0 LikesA Chinese Long March 3D rocket launched the APSTAR-6D telecommunications satellite from the Xichang Satellite Launch Center on July 9, 2020. The satellite will provide "broadband telecommunication services for airborne, shipborne, vehicle-borne, and other
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01:03 New
'Godzilla' Saharan dust plume's aerosols tracked from space
Added 31 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
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06:13 New
See a solar eclipse shadow from space in real-time
Added 22 Views / 0 LikesNASA astronaut Chris Cassidy captured imagery of the moon's shadow cast on Earth from the 'ring of fire' solar eclipse that occurred on June 21, 2020. See what the astronauts saw in real-time aboard the International Space Station. -- 'Ring of fire' solar
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09:17 New
Orange Kachina! Comet c/2020 F3 NEOwise continues to Impress & How to find it!
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