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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01:31
Potential 'Earth-like' planet discovered in star's habitable zone, 35 light-years away
Added 183 Views / 0 LikesThe L 98-59 star system is host to several planets, one that is half the mass of Venus, an ocean world and another that "may have an atmosphere that could protect and support life," according to astronomer María Rosa Zapatero Osorio from the Centre for As
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13:33
Potential BIG East coast Blizzard or bust & next weeks potential blockbuster WTF storm.
Added 128 Views / 0 Likesthe energy is loopy right now.God bless everyone.T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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07:52
potential BIG IMPACT Nor'Easter & MOAR Florida Freeze! Texas Ice! Alaska Volcano eruption! Tonga EQs
Added 138 Views / 0 LikesCongratulations, you have survived 3/4s of January 2022.I am proud of you.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornew
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13:55
potential Hurricane Gordon is a flood machine & the Atlantic is look extremely dangerous,
Added 356 Views / 0 LikesGordon looks like a major rain maker with 70+ mph wind gusts possible, major storm surge and some dangerous flooding and storms go up to Canada with the Atlantic showing some wild signals. Don't be scared. Be prepared. Have a Plan. It's going to be a wild
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05:56
Potential Tropical Cyclone 6 headed to Florida & Tornadoes down in Wisconsin & the Next Heatwave.
Added 159 Views / 0 LikesHi.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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06:06
Potentially Catastrophic Hurricane Matthew is getting Larger & Weirder
Added 625 Views / 0 LikesPotentially Catastrophic Hurricane Matthew is getting Larger & Weirder
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07:54
Potentially Catastrophic Hurricane Matthew is Growing & a Major Threat to USA
Added 570 Views / 0 LikesPotentially Catastrophic Hurricane Matthew is Growing & a Major Threat to USA
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00:58
Potentially Habitable Super-Earth Has Water Vapor in Atmosphere
Added 358 Views / 0 LikesResearchers using the Hubble Space Telescope have discovered water vapor in the atmosphere of planet K2-18b, located about 110 light-years from Earth. Credit: Space.com / animations courtesy: ESA/Hubble/M. Kornmesser/L. L. Christensen/NASA/Kepler/Dana Ber
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04:32
Potentially Hazardous Near Earth Asteroid 2016 DV1 to pass Earth 1 LD on March 3rd
Added 787 Views / 0 LikesPotentially Hazardous Near Earth Asteroid 2016 DV1 to pass Earth 1 LD on March 3rd
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02:46
Potentially Hazardous Near Earth Asteroid Update: Another one just Missed Earth
Added 559 Views / 0 LikesPotentially Hazardous Near Earth Asteroid Update: Another one just Missed Earth
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07:51
Potentially Killer Asteroid could strike Earth TODAY! .26 Lunar Distance 2017 JA
Added 514 Views / 0 LikesPotentially Killer Asteroid could strike Earth TODAY! .26 Lunar Distance 2017 JA
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00:30
potw2134a
Added 78 Views / 0 LikesMore information and download options: http://esahubble.org/videos/potw2134a/Credit:ESA/Hubble & NASA, J. Kalirai, A. MiloneMusic: Stellardrone - Billions and Billions
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00:30
potw2135a
Added 76 Views / 0 LikesMore information and download options: http://esahubble.org/videos/potw2135a/Credit:ESA/Hubble & NASA, B. NisiniMusic: Andrey Klimkovsky/New Horizons
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00:30
potw2136a
Added 59 Views / 0 LikesMore information and download options: http://esahubble.org/videos/potw2136a/Credit:ESA/Hubble and NASA, A. SarajediniMusic: Andrey Klimkovsky/New Horizons
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01:03
Pow! DART asteroid impact seen from ground observatory and cubesat
Added 112 Views / 0 LikesNASA's Double Asteroid Redirection Test (DART) impacted the 'moonlet' Dimorphos in the Didymos asteroid system on Sept. 26, 2022. The Les Makes observatory captured imagery of the impact from the French island of La Reunion. Meanwhile, the first imagery f
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07:55
Power Outage & Stare of Emergency near NEW North Carolina Island
Added 507 Views / 0 LikesPower Outage & Stare of Emergency near NEW North Carolina Island
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09:48
Power Outage @ the White House, New Houston Texans Cheerleaders & Blue Venus
Added 737 Views / 0 LikesPower Outage @ the White House, New Houston Texans Cheerleaders & Blue Venus
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09:22
Powerful Artemis moon rocket engine test fired in Mississippi
Added 158 Views / 0 LikesNASA completed a full duration test fire of the RS-25 rocket engine at the Stennis Space Center in Mississippi on March 30, 2022. Credit: NASA Stennis Space Center
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01:11
Powerful black hole jet snapped in unprecedented detail by Event Horizon Telescope
Added 198 Views / 0 LikesThe telescope that captured the first image of the black hole has now delivered imagery of a jet blasted by the supermassive black hole at the heart of the Centaurus A galaxy. Full Story: https://www.space.com/event-horizon-telescope-images-black-hole-jet
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01:03
Powerful Hurricane Matthew Seen From Space | Time-Lapse Video
Added 655 Views / 0 LikesPowerful Hurricane Matthew Seen From Space | Time-Lapse Video