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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01:02
See Tropical Storm Nicole from space as it approaches Florida in time-lapse
Added 76 Views / 0 LikesNOAA's GOES-East satellite captured footage of Tropical Storm Nicole from Nov. 8-9, 2022. See the imagery time-lapsed here. NASA delays Artemis 1 moon launch to Nov. 16 due to Tropical Storm Nicole: https://www.space.com/artemis-1-moon-launch-delay-novemb
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02:54
Pulsar's Dramatic Morph Caught by Space Telescope | Video
Added 650 Views / 0 LikesPulsar's Dramatic Morph Caught by Space Telescope | Video
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22:18
Red Alert! Massive WIND & rain Storm for Texas & East Coast Earthquakes
Added 383 Views / 0 LikesThis strange wind event is 800 miles high and 400 miles wide stretching from New Mexico to Oklahoma to Kansas to Arkansas& the rain coming out of the pacific is heavy. Plus, we look at the planetary orbital angular momentum theory that will probably bring
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10:04
Red Alert! Hurricane Maria - Prepare for Worst Case Scenario NOW!
Added 592 Views / 0 LikesRed Alert! Hurricane Maria - Prepare for Worst Case Scenario NOW!
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04:12
SpaceX Crew-1 spacecraft to change docking ports for Crew-2 arrival
Added 226 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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00:35
Eclipse Safety 101 — Indirect Eclipse Viewing with a Pinhole Projector
Added 55 Views / 0 LikesIf you don't have proper eye protection to a view a solar eclipse there are other safe ways to experience this cosmic phenomenon. One way is to use a pinhole projector, which has a small opening (for example, a hole punched in an index card) and projects
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01:43
Ariane 5 Rocket launches satellites for Japan and South Korea
Added 370 Views / 0 LikesThe Japanese SKYPerfect JSAT Corporation's JCSAT-17 satellite and Korea Aerospace Research Institute (KARI) GEO-KOMPSAT-2B satellite were launched atop an Ariane 5 rocket on Feb. 18, 2020. Credit: Arianespace
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10:29
O WTF?!? Scientists are Using Magnetics for Mind Control
Added 709 Views / 0 LikesO WTF?!? Scientists are Using Magnetics for Mind Control
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01:01
Watch a 'solar snake' slither across the sun in orbiter view
Added 93 Views / 0 LikesESA's Solar Orbiter captured a "tube of cooler atmospheric gases snaking its way through the Sun’s magnetic field," according to ESA. See it "slither" in these time-lapsed views. Credit: ESA & NASA/Solar Orbiter/EUI Team; acknowledgement: Frédéric Auchère
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01:49
Godspeed Robin Williams: Good Morning Discovery! | Video
Added 516 Views / 0 LikesGodspeed Robin Williams: Good Morning Discovery! | Video
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16:46
7.4 Earthquake in Russia, Giant Storms for USA & CANADA and a Christmas Solar Flare
Added 380 Views / 0 Likesive worked all year. I hope my Christmas bonus is good.God bless everyone,Thttps://www.paypal.me/THORnewsthe crankywxguy bloghttp://www.stormhamster.com/entry/e122018.htm
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07:44
6.0+ Magnitude Earthquake Taiwan & Mid-Atlantic Ridge! 0 Sunspots! 104000 Covid USA Hospitalizations
Added 153 Views / 0 LikesBuckle up & Strap in for a Rough January 2022.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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Space to Ground: Triple Spacewalk: 09/29/2017
Added 554 Views / 0 LikesSpace to Ground: Triple Spacewalk: 09/29/2017
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01:11
SpaceX Starship SN11 rolling out to launch pad
Added 218 Views / 0 LikesSpaceX has begun its rollout of the Starship SN11 prototype. Testing will commence on SN11 in coming days as it is being prepped for flight. -- See the Starship SN10 flight: https://www.space.com/spacex-starship-sn10-test-launch-landing-explosionCredit: S
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01:08
Watch the 'ring of fire' annular solar eclipse in this amazing time-lapse from Nevada
Added 58 Views / 0 LikesA timelapse of the 2023 annular solar eclipse as seen from outside Great Basin National Park in Ely. Nevada on Oct. 14, 2023. Shot with a Unistellar eQuinox 2 smart telescope with Smart Solar Filter. Full Story: https://www.space.com/annular-solar-eclipse
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02:26
Space to Ground: Investigating Bone Loss: 02/28/2020
Added 317 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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01:06
Radar Pegs 3rd Closest Comet At 3000ft-Wide | Video
Added 617 Views / 0 LikesRadar Pegs 3rd Closest Comet At 3000ft-Wide | Video
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00:54
Secretive Space Plane Passes Moon and Rigel in Night Sky | Video
Added 703 Views / 0 LikesSecretive Space Plane Passes Moon and Rigel in Night Sky | Video