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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01:09
Life on Alpha Centauri Planets? Odds are Improving With New X-Ray Study
Added 494 Views / 0 LikesA study using the Chandra X-ray telescope has found that the two stars of the Alpha Centauri system are not bathing orbiting planets in dangerous X-ray radiation. This boosts hope for “sustainability of life” on the planets, according the Chandra team. --
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03:13
Life On Mars Sim: 'Terraforming' Utah To Grow On Mars | Video
Added 619 Views / 0 LikesMarsCrew134 is simulating the exploration of Mars in high altitude Utah. Crew scientist Michaela Musilova is adding organisms from Earth's extreme environments to the Utah soil samples to create organics, and important step in terraforming Mars.
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03:13
Life On Mars Sim: Crew Copes with High Dry Utah | Exclusive SPACE.com Video
Added 725 Views / 0 LikesMarsCrew134 is simulating the life of engineers and scientists in the harsh conditions of Mars. Crew Commander Ashley Dale talks about the mission and introduces his team.
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03:13
Life On Mars Sim: Extracting Fuel Making Hydrogen From 'Mars' Soil | Video
Added 797 Views / 1 LikesMarsCrew134's crew scientist Vibha Srivastava describes extracting hydrogen fuel from soil sampled outside a simulated Mars habitat in Utah, a process called "in-situ resource utilization."
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03:12
Life On Mars Sim: Practicing 'Off-World' Medicine With Earth Supervision | Video
Added 679 Views / 0 LikesThe new world of tele-anesthesiology and tele-surgery is practiced in high altitude Utah by MarsCrew134. The crew's executive and medical officer Dr. Susan Jewell discusses.
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03:13
Life On Mars Sim: Rover Deployed In High And Dry Utah | Video
Added 716 Views / 0 LikesMarsCrew134's crew engineer Ewan Reid is testing a rover carrying a terrain mapping pair of stereo cameras and equipment to test long range robotic control during a two week human Mars mission simulation in high altitude Utah.
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03:13
Life On Mars Sim: Spacesuits Create Challenges On Mock EVA | Video
Added 771 Views / 0 LikesInterfacing with rovers, laptops and other tech needed to explore the Red Planet, while dealing with the confines of a spacesuit can be difficult. MarsCrew134's crew engineer Sue Ann discuss her research into the problem.
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04:15
Life on Mars? New Rover’s Organic Molecule Analyzer a ‘Leap Forward’
Added 392 Views / 0 LikesThe European Space Agency’s ExoMars mission will be carry an instrument called the Mars Organic Molecule Analyzer (MOMA) and it “squeezes a lab full of chemistry equipment into a package the size of a toaster oven,” according to NASA’s Goddard Space Fligh
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09:04
LIFE ON PLANET VENUS!?!? Shocking:* Revelation! Astronomers may have found Evidence!
Added 413 Views / 0 LikesWARNING! Venus Veritas makes me a happy Venus Viking!This is a part ZERO THORnews Asteroid Fight Club video.You've been warned.God bless everyone,T LEWISONJ5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewi
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04:59
Life on Venus? Phosphine found? Astrobiologist explains
Added 277 Views / 0 LikesAstrobiologist David Grinspoon explains the significance of finding phosphine molecules on Venus. Grinspoon is a Planetary Science Institute senior scientist and author of "Venus Revealed: A New Look Below The Clouds Of Our Mysteriious Twin Planet."(https
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05:10
Life Over Earth: Astronaut's 'Most Incredible' Space Station Experiences | Video
Added 632 Views / 0 LikesLife Over Earth: Astronaut's 'Most Incredible' Space Station Experiences | Video
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04:15
Life Threatening Apple Sized Hail Falling near San Antonio Texas! California Sinkholes! Oh my.
Added 68 Views / 0 Likeshi.God bless everyone,T LEWISONhttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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01:07
Life's Building Blocks Detected Around Young Star | Video
Added 643 Views / 0 LikesLife's Building Blocks Detected Around Young Star | Video
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03:22
Lift-Off! NASA Launches MMS Satellite Quartet | Video
Added 572 Views / 0 LikesLift-Off! NASA Launches MMS Satellite Quartet | Video
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06:47
Lift-Off! SpaceX Dragon Heads to Space Station | Video
Added 778 Views / 0 LikesThe historic first commercial spacecraft to supply the International Space Station launched aboard a Falcon 9 rocket on May 22th, 2012. If it passes all on-orbit demonstrations, it will dock with ISS on May 25th.
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04:00
Lift-Off! SpaceX Falcon 9 Launches DSCOVR Satellite | Video
Added 683 Views / 0 LikesLift-Off! SpaceX Falcon 9 Launches DSCOVR Satellite | Video
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02:47
Lift-Off! SpaceX Launches Thaicom 6 Satellite | Video
Added 697 Views / 0 LikesThe commercial space company has launched a second satellite in 2 months aboard an upgraded Falcon 9 rocket. It launched from Kennedy Space Center in Florida on January 6th, 2014. Photos here: http://goo.gl/xDvJFn Credit: SpaceX
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03:55
Liftoff! Ariane 5 Rocket Launches 4 Galileo Navigation Satellites
Added 469 Views / 0 LikesAn Ariane 5 rocket launched four Galileo navigation satellites from Kourou, French Guiana on July 25, 2018. -- Full Story: https://www.space.com/41271-ariane-5-rocket-launches-4-galileo-satellites.htmlCredit: ESA/Arianespace
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00:46
Liftoff! China Launches 5 Satellites Atop Long March-6 Rocket
Added 349 Views / 0 LikesA Long March-6 rocket launched 5 Ningxia-1 remote-sensing satellites on Nov. 13, 2109 from the Taiyuan Satellite Launch Center in north China. -- Latest News on China's Space Program: https://www.space.com/topics/china-space-programCredit: China Central T
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11:33
Liftoff! China launches cargo spacecraft to Tiangong space station
Added 85 Views / 0 LikesChina's Long March 7 rocket launched the Tianzhou-6 cargo spacecraft to the Tiangong space station on May 10, 2023. The rocket lifted off from the Wenchang Spacecraft Launch Site in south China at 9:22am EDT (21:22pm BJT). [Full Story](https://www.space.c