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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01:17
'Stellar Carcasses' On The Move - Globular Cluster Hubble Close-Up | Video
Added 657 Views / 0 Likes'Stellar Carcasses' On The Move - Globular Cluster Hubble Close-Up | Video
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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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02:09
'Sub-Neptune' planet developed 2nd atmosphere? Young hot star stripped 1st
Added 218 Views / 0 LikesA Hubble Space Telescope study of GJ 1132 b may have revealed that the exoplanet developed a second atmposhere after the first was stripped away by the intense radiation of its host star.Video credit: NASA's Goddard Space Flight Center Paul Morris: Lead P
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02:55
'Sun Kissing’ NASA Probe - What is Its Heat Shield Made Of?
Added 438 Views / 0 LikesNASA’s Parker Solar Probe will get closer to the Sun than any spacecraft has before. NASA explains what its heat shield is made of so it doesn’t melt. - More about the heat shield: https://www.space.com/41137-parker-solar-probe-gets-heat-shield.htmlCredit
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03:20
'Super flares' bigger than the Carrington Event investigated
Added 71 Views / 0 LikesNASA's Chandra X-ray observatory has been studying 'super flares' from young stars. The "Carrington Event" of 1859 was the strongest solar storm on record generated by our sun. Credit: NASA/CXC/A. Hobart
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01:01
'Super-Earth' Atmosphere Detected For First Time | Artist Animation
Added 684 Views / 0 Likes'Super-Earth' Atmosphere Detected For First Time | Artist Animation
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05:52
'Supermoon' Science: NASA Explains What's Rare About Luna In Nov. 2016 | Video
Added 627 Views / 0 Likes'Supermoon' Science: NASA Explains What's Rare About Luna In Nov. 2016 | Video
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08:50
'THANK YOU. I LOVE YOU. GOOD-BYE' ' Sam Turner & the Cactus Cats LIVE @ Rudyards
Added 501 Views / 0 Likes'THANK YOU. I LOVE YOU. GOOD-BYE' ' Sam Turner & the Cactus Cats LIVE @ Rudyards
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01:00
'Thanks Ingenuity!' NASA pays tribute to Mars helicopter after final flight
Added 40 Views / 0 LikesNASA's Ingenuity helicopter flew 72 times on the Red Planet. One of it rotors were damaged on the last flight. The Jet Propulsion Laboratory remembers the little explorer. Full Story: https://www.space.com/nasa-ingenuity-mars-helicopter-mission-endsCredit
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01:13
'Theory of Everything' tested with Perseus galaxy cluster observations
Added 328 Views / 0 LikesNASA's Chandra X-ray Observatory has been used to test string theory, aka 'Theory of Everything," with observations of the Perseus galaxy cluster. -- Putting String Theory to the test: https://www.space.com/putting-string-theory-to-test.htmlCredit: NASA/C
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02:46
'Thick cocoons' shrouded identities of supermassive black holes - Tour the region
Added 296 Views / 0 LikesSeveral black holes in the Chandra Deep Field South (CDF-S) were misidentified. New observations by the Chandra X-ray Observatory has lifted the veil on these growing supermassive black holes. Chandra Space Telescope: Revealing the Invisible Universe:(htt
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13:50
'This GIANT EXOplanet shouldn't exist. BUT! It does!' wait. what?
Added 334 Views / 0 LikesWe're talking about Exoplanets, yo.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096HTTPS://WWW.PAYPAL.ME/THORNEWSwww.venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornewsthis article is from Earthsky.orghttps://e
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01:10
'This is your chance' to go to space with Jared Isaacman and SpaceX
Added 150 Views / 0 LikesShift4 Payments CEO Jared Isaacman will be heading to space aboard a SpaceX Crew Dragon along with a pair of contest winners. Learn more about it: https://www.space.com/super-bowl-2021-spacex-inspiration4-commercialCredit: Space.com | produced & edited by
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01:28
'Time-traveling' James Webb Space Telescope sees galaxy 3 times in same observation - See it in 4K
Added 97 Views / 0 LikesThe James Webb Space Telescope captured massive galaxy cluster RX J2129, located about 3.2 billion light-years away. A ‘supernova-hosting galaxy’ can be seen three times, at 3 different points in time, due to gravitational lensing.Credit: Space.com | foot
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01:13
'Traces' of the first stars may have been discovered
Added 75 Views / 0 LikesThe "ancient chemical remains of the first stars " may have discovered using the Gemini North telescope, according to NSF's NOIRLab. [Full Story](https://www.space.com/supernova-traces-from-earliest-stars-discovered)Credit: Images and Videos: PROGRAM/NOIR
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03:30
'Twinkle, Twinkle Little Star' Read in Space by ESA Astronaut | Video
Added 442 Views / 0 Likes'Twinkle, Twinkle Little Star' Read in Space by ESA Astronaut | Video
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01:07
'Twisters' On The Sun Spotted By Spacecraft | Video
Added 626 Views / 0 LikesThe Solar Dynamics Observatory spotted "Sun tornadoes" spinning super-heated plasma off the surface and into Space. Magnetic forces pulled and stretched the plasma for a day (April 29-30, 2014) before sending it on a cosmic journey.
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01:06
'Ultima Thule' Nearly Fills Single Frame in New Time-Lapse
Added 334 Views / 0 LikesNASA New Horizons’ New Horizons Long Range Reconnaissance Imager (LORRI) captured photos of 2014 MU69, nicknamed “Ultima Thule,” on Jan. 1, 2019. The spacecraft was 4,117 miles (6,640 kilometers) away from it and traveling over 32,000 mph (51,499 km/h) wh
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02:00
'Unique' black hole that's only 3800 light-years away discovered by Gaia mission
Added 75 Views / 0 LikesESA's Gaia mission has discovered the closest and 2nd closest black holes to Earth found yet. In this animation, travel to latter, black hole Gaia BH2, and see what makes it unique. Credit: ESA/Gaia/DPAC, CC BY-SA 3.0 IGO
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00:58
'Universe Machine' Creates Virtual Ride Through Millions of Universes - Fly Through One
Added 289 Views / 0 LikesA supercomputer was used to generate millions of simulated universes to study galaxy evolution. Take a 'Universe Machine' ride: https://www.space.com/virtual-universe-machine-reveals-star-formation.htmlCredit: Behroozi, Wechsler, Hearin, Conroy