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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05:01
25 Years of Space Exploration (1999-2024)
Added 18 Views / 0 LikesHere's a look at the last 25 years of spaceflight from 1999 to 2024 during the first 25 years of Space.com. From the retirement of NASA's space shuttle program, to the new giant leap that is NASA's Artemis moon missions, private space travel and more, see
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04:07
Space to Ground: Images: July 19, 2024
Added 18 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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01:08
Astronauts wish Space.com a Happy 25th birthday!!
Added 18 Views / 0 Likes"Spaceflight and exploration have changed tremendously over the past 25 years, and Space.com has been there to report on it all. Celebrate our 25th anniversary with some of the names who helped take us to the stars and beyond."
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12:21
Flashback! Space Shuttle launches the Chandra X-ray Observatory in 1999
Added 18 Views / 0 LikesThe Chandra X-ray Telescope was launch on Space Shuttle Columbia lon July 23, 2009. See NASA's highlights of the STS-93 mission in a post-flight presentation. Credit: NASA
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01:09
Full moon in Aug. 2024 is a Supermoon Blue Moon!
Added 18 Views / 0 LikesOn Aug, 19, 2024, the full moon will be a supermoon and a blue moon. "Although it will not look blue, as the third full Moon in a season with four full Moons, this will be a Blue Moon," according to NASA. Learn more about blue moons: https://www.space.com
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03:46
Space to Ground: Business Trip: Sept. 27, 2024
Added 18 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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01:07
Hurricane Milton forms over the Gulf of Mexico in satellite time-lapse
Added 18 Views / 0 LikesCategory 1 Hurricane Milton has been captured by NOAA's GOES-East satellite. "Risk of life-threatening impacts increasing for portions of the Florida's west coast," according to NOAA. Credit: CIRA / NOAA | edited by Space.com
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01:43
NASA Job: Systems Engineer — Behind the Spacecraft: Europa Clipper
Added 18 Views / 0 LikesMeet Valeria Salazar, a systems engineer at NASA who helped integrate and assemble the hundreds of components that make up Europa Clipper — a spacecraft designed to explore Europa, a moon of Jupiter that is home to a vast liquid water ocean beneath its ic
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03:31
Space to Ground: Observing Extreme Storms: Oct. 11, 2024
Added 18 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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00:30
NGC 602 (Pan video)
Added 18 Views / 0 LikesNear the outskirts of the Small Magellanic Cloud, a satellite galaxy roughly 200 000 light-years from Earth, lies the young star cluster NGC 602, which is featured in this new image from the NASA/ESA/CSA James Webb Space Telescope. This image includes dat
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01:26
Satellites, auroras, and a meteor seen in amazing time-lapse from space
Added 17 Views / 0 LikesNASA astronaut Matthew Dominick shared this amazing time-lapse captured from the International Space Station. Credit: Space.com | footage courtesy: NASA / Matthew Dominick | edited by [Steve Spaleta](https://x.com/stevespaleta) Music: Falling Clouds by Tr
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01:06
NASA's Artemis 2 moon rocket core stage arrives in Florida! See a time-lapse
Added 17 Views / 0 LikesThis time-lapse shows the core stage for Artemis 2, an astronaut round-the-moon mission, arriving in the vicinity of NASA's Kennedy Space Center in Florida on July 23, 2024 after a journey from another agency facility in New Orleans. On July 24, they bega
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00:30
Transition video of interacting galaxies Arp 142 (NIRCam image + MIRI and NIRCam image))
Added 17 Views / 0 LikesThis video features two views of the interaction galaxies Arp 142. First shown is the NIRCam image, followed by the combined NIRCam and MIRI image.The distorted spiral galaxy at the centre, the Penguin, and the compact elliptical galaxy at the left, the E
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Pan: NGC 3810
Added 17 Views / 0 LikesMeasuring the distance to truly remote objects like galaxies, quasars and galaxy clusters is a crucial task in astrophysics, particularly when it comes to studying the early Universe, but it’s a difficult one. Only in the case of a few nearby objects like
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01:50
Boeing Starliner's undocking and return to Earth explained - Any risks with thrusters?
Added 17 Views / 0 LikesNASA Commercial Crew program manager Steve Stich explains how Boeing Starliner will undock from the International Space Station and return to Earth. Credit: NASA
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00:57
Crewed Blue Origin New Shepard ???? ascends! #space #shorts #ns26
Added 17 Views / 0 LikesBlue Origin New Shepard rocket launches NS-26 mission.
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01:34
Wow! Fly from Space to NYC with Google Earth Studio (feat. West 66th by Logan Spaleta)
Added 17 Views / 0 LikesZoom into NYC from space in this amazing Google Earth Studio visualization, featuring "West 66th" by pop rock artist Logan Spaleta - Full song: https://found.ee/loganspaletawest66thCredit: Google Earth Studio / edited by Space.com
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01:33
Java In zero-g! How the space coffee cup works
Added 17 Views / 0 LikesAstronauts on the International Space Station have a zero-g cup for their java. Find out about it here. Credit: NASA Johnson Space Center
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02:48
Black hole shreds star and has moved on to another target
Added 17 Views / 0 LikesUsing NASA’s Chandra X-ray Observatory and other telescopes, astronomers have found that a black hole that shredded a star has moved onto a another star or stellar black hole. Credit: NASA/CXC/A. Hobart
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05:28
Double Spooky Season Hurricane Watch! Very Naked Eye Comet c/2023 Atlas! whoa Europa!
Added 17 Views / 0 LikesI hope you are doing wonderful.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewisonhttps://www.patreon.com/thornews