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Outer Space & Universe

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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)

 

  • 01:18 New Solar Orbiter will explore 'new heights on the sun' - Trailer

    New Solar Orbiter will explore 'new heights on the sun' - Trailer

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    The ESA/NASA Solar Orbiter will study the Sun's poles, magnetic field and more. - Solar Orbiter, a new mission to the sun: https://www.space.com/solar-orbiter-sun-mission-launching-february-2020.htmlCredit: NASA Goddard Space Flight CenterMusic: Find Her

  • 02:21 Crew Dragon’s First Demonstration Mission | One-Year Launch Anniversary

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    by shub Added 336 Views / 0 Likes

    On March 2, 2019, Falcon 9 launched Crew Dragon on its first demonstration mission, and the next day it became the first American spacecraft to autonomously dock with the International Space Station. After its stay at the space station, the spacecraft suc

  • 03:17 Is the Universe NOT expanding uniformly in all directions? X-ray study

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    by admin Added 336 Views / 0 Likes

    NASA's Chandra X-ray Observatory and ESA's XMM-Newton have been used to study the Universe and the results call into question how it is expanding. -- Surprise! The universe's expansion rate may vary from place to place: https://www.space.com/universe-expa

  • 03:44 Blastoff! SpaceX launches Starlink 7 mission, another 60 satellites

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    by admin Added 336 Views / 0 Likes

    SpaceX launched 60 Starlink satellites atop a Falcon 9 rocket from Launch Complex 40 at Cape Canaveral Air Force Station in Florida on June 3, 2020. The launch brings the number of satellites in orbit for the megaconstellation to 482.Credit: SpaceX

  • 07:23 Get Ready for a Tropical Storm/Hurricane July 9th! Florida & The Gulf of Mexico Coastal Cities!

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    by admin Added 336 Views / 0 Likes

    The GFS is showing us a sign to look out for 5 days after the last eclipse.Lots can change between now and then so keep an eye on the situation.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venm

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    by admin Added 336 Views / 0 Likes

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    Genesis Planet Found & Confirmed by Hubble! Declares NASA

    by admin Added 335 Views / 0 Likes

    Genesis Planet Found & Confirmed by Hubble! Declares NASA

  • 03:14 THORnews is THORnews

    THORnews is THORnews

    by admin Added 335 Views / 0 Likes

    I am attempting to remember how to edit. Stay cool. TGod bless everyone,Thttps://www.paypal.me/THORnewsTshirtshttps://hitthebuttonbaby.com/THORNEWS PO BOX 35946HOUSTON TEXAS77235-5946

  • 02:26 I sing instant poetry.

    I sing instant poetry.

    by admin Added 335 Views / 0 Likes

    It's true. :)T

  • 06:20 Aliens? Red Dwarf Stars are Everywhere, Close & probably have Alien Life.

    Aliens? Red Dwarf Stars are Everywhere, Close & probably have Alien Life.

    by admin Added 335 Views / 0 Likes

    Red Dwarf stars have us surrounded AND they have planets that are probably filled with alien life. Stay Cool.God bless Everyone, Thttps://www.paypal.me/THORnews

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    by admin Added 335 Views / 0 Likes

    God bless everyone,Thttps://www.paypal.me/THORnews@newTHOR on twitterhttps://www.facebook.com/thornewsgoTshirtshttps://hitthebuttonbaby.com/the crankywxguy bloghttp://www.stormhamster.com/entry/e010119.htmmike's weather pagehttp://www.spaghettimodels.com/

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    by admin Added 335 Views / 0 Likes

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  • 01:09 Galaxy’s Core is Packed With Dark Matter

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    by admin Added 335 Views / 0 Likes

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  • 03:45 Hunting for Dark Energy - eRosita X-Ray Telescope

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    by admin Added 335 Views / 0 Likes

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    by admin Added 335 Views / 0 Likes

    This story is interesting.God bless everyone,Tu can mail THORnews atT Lewison5430 Birdwood Rd. #416Houston Texas 77096https://www.paypal.me/thornewsthe articlehttps://planetplanet.net/2019/07/01/oumuamua-was-it-aliens-spoiler-no/‘Oumuamua: was it aliens?

  • 02:28 We Chose: The Inspiration of Apollo

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    by admin Added 335 Views / 0 Likes

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    by admin Added 335 Views / 0 Likes

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    by admin Added 335 Views / 0 Likes

    NASA astronaut Christina Koch captured amazing imagery of the Moon as it moved right above the day/night line on Earth as seen from the International Space Station. About half way through the video a partial lunar eclipse can be seen. -- Pictures from Spa

  • 00:56 Jupiter's Moon Io Casts Large Shadow on Gas Giant Planet

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    by admin Added 335 Views / 0 Likes

    NASA's Juno mission captured imagery of the shadow of Jupiter's moon Io being cast onto the gas giant planet's clouds. Story: NASA's Juno Mission Checks Out Eclipse on Jupiter: https://www.space.com/juno-sees-io-moon-shadow-on-jupiter.htmlJuno: Taking a L

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