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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03:46
Blastoff! SpaceX launches 57 Starlink satellites, 2 BlackSky sats
Added 303 Views / 0 LikesSpaceX launched 57 Starlink satellites and ttwo BlackSky Global Earth-observing satellites atop a Falcon 9 rocket from Launch Complex 39A (LC-39A) at NASA's Kennedy Space Center on Aug. 7, 2020.Credit: SpaceX
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09:33
Wildfires! Power Outages! 3 Days of Severe Weather & all eyes on the Tropics & GOM August 16th+!
Added 253 Views / 0 LikesEnjoy this "lull" in the weather.It'll probably start getting exciting & dangerous againin about 10 days. God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashAp
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01:01
Martian 'nightglow' visualized using NASA spacecraft data
Added 265 Views / 0 LikesNASA's Mars Atmosphere and Volatile EvolutioN (MAVEN) mission captured data on the Red Planet's ultraviolet "nightglow." This phenomena in shown using green-to-white false color in this visualization above a rotating "simulated view of the Mars globe," ac
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03:01
Hubble detected Earth's ozone during lunar eclipse
Added 285 Views / 0 LikesThe Hubble Space Telescope detected Earth's ozone during the lunar eclipse of June 2019 using the "moon as a mirror," according to NASA's Goddard Space Flight Center. This method could be used to search for signs of life on other planets. Full Story:(http
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01:26
Hubblecast 130 Light: Hubble Studies the Earth during a Total Lunar Eclipse
Added 295 Views / 0 LikesTaking advantage of a total lunar eclipse in January 2019, astronomers using the NASA/ESA Hubble Space Telescope have measured the amount of ozone in Earth’s atmosphere. This method serves as a proxy for how they will observe Earth-like planets around oth
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00:37
Hubble Observes the Total Lunar Eclipse (Artist’s Impression)
Added 295 Views / 0 LikesTaking advantage of a total lunar eclipse in January 2019, astronomers using the NASA/ESA Hubble Space Telescope have measured the amount of ozone in Earth’s atmosphere. This method serves as a proxy for how they will observe Earth-like planets around oth
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01:08
China launches Gaofen-9 04 optical remote-sensing satellite
Added 260 Views / 0 LikesChina's Long March-2D rocket launched the Gaofen-9 04 optical remote-sensing satellite from the Jiuquan Satellite Launch Center on Aug. 6, 2020. Credit: Space.com / footage courtesy: China Central Television (CCTV) / produced & edited by [Steve Spaleta](h
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03:49
Red Alert! The Next USA Landfalling Hurricane is probably on August 20th. Florida or TX LA MS AL
Added 242 Views / 0 LikesCrystal River, Florida would be my specific guess but at this point no one really knows for sure. Prepare for the Worst & Plan for the best.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.co
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04:37
Down to Earth – All in This Together
Added 145 Views / 0 LikesIn this episode of Down to Earth – All in This Together, NASA Astronaut Jessica Meir recalls her recent time living and working aboard the International Space Station, “I never appreciated how fragile and beautiful and special the Earth was… we have one p
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03:13
SpaceX Crew Dragon's performance was 'rock solid,' says Demo-2 commander Doug Hurley
Added 224 Views / 0 LikesNASA astronaut Doug Hurley explains just how the Crew Dragon spacecraft performed in its first crewed flight in response to a question from Ars Technica's Eric Berger. -- 'It sounds like an animal': NASA astronauts describe the Crew Dragon re-entry experi
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01:01
Watch SpaceX Starship SN5's first flight with drone, rocket and engine cams
Added 345 Views / 0 LikesThe SpaceX Starship SN5 prototype's first hop took place on Aug. 4, 2020 at the private spaceflight company's Boca Chica, Texas facility. Cameras aboard a drone and the rocket captured footage of the flight. -- Full Story: https://www.space.com/spacex-sta
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01:22
SpaceX Starship SN5 prototype takes first hop - Test-flight video
Added 315 Views / 0 LikesSpaceX completed a test flight of the Starship SN5 prototype at their Boca Chica, Texas facility on Aug. 4, 2020. Credit: SPadre Cam (https://www.youtube.com/watch?v=rCnl4IZOPe0) / mash mix by Space.com's Steve Spaleta (http://www.twitter.com/stevespaleta
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03:56
SpaceX Demo-2 crew talks re-entry and sat phone calls post-splashdown
Added 262 Views / 0 LikesIn response to questions from the Washington Post's Chris Davenport, NASA astronauts Doug Hurley and Bob Behnken talk about their Earth re-entry aboard Crew Dragon and the satellite phone calls they made after splashdown.Credit: NASA
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01:15
See Hurricane/Tropical Storm Isaias in new time-lapse from space
Added 291 Views / 0 LikesNOAA's GOES-East satellite and the International Space Station has kept their eyes on Hurricane/Tropical Storm Isaias. See views of the storm from Aug. 1 through Aug 4, 2020. Credit; CIRA/NOAA / produced & edited by [Steve Spaleta](http://www.twitter.com/
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04:25
Why does NASA keep going back to Mars?
Added 171 Views / 0 LikesAhead of the launch of the Mars 2020 Perseverance rover, NASA's Planetary Science Division Director Lori Glaze explains why the Red Planet is important to explore. [Perseverance rover will use some of the best Martian maps ever made](https://www.space.com
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04:18
It’s A Great Day to be Alive
Added 296 Views / 0 LikesFrom 250 miles above the Earth, Expedition 63 is very much aware of the hard times which exist in the neighborhoods of the world rotating below. Even amid the uncertainty and difficulties of battling through these challenging times, we encourage everyone
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02:52
Monster Storm Isaias continues to wreak havoc on the North East USA.
Added 293 Views / 0 LikesThis storm is strange & strong.Stay aware. Have a plan. Be 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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14:04
Solar Cycle 25 is Strengthening! 4 new Sunspots in 10 days & Increased Flaring!
Added 287 Views / 0 LikesThe Sun is getting in on the unpredictable 2020 action, y'all.No one knows what the Sun is going to do.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashAppht