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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)

 

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    by Shubnigg Added 200 Views / 0 Likes

    The James Webb Space Telescope's Near-Infrared camera (NIRCam) captured stunning imagery of Neptune, its rings and moons. It is the "clearest view of this peculiar planet’s rings in more than 30 years,” according to ESA/NASA. Full Story: https://www.space

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    by Shubnigg Added 188 Views / 0 Likes

    The James Webb Space Telescope has observed the iconic Pillars of Creation and the view is breathtaking! The Webb team explains some of the features in this iconic image. Full Story: https://www.space.com/james-webb-space-telescope-pillars-creation-photoC

  • 01:52 Webb Telescope's amazing view of star-forming region NGC 346 in 4K zoom-in

    Webb Telescope's amazing view of star-forming region NGC 346 in 4K zoom-in

    by Shubnigg Added 149 Views / 0 Likes

    Zoom into the James Webb Space Telescope's view of a star-forming region in the Small Magellanic Cloud known as NGC 346. Credit: Space.com | ESA/Webb, NASA, ESA, CSA, ESO, ESA/Hubble, Digitized Sky Survey 2, N. Habel (JPL), P. Kavanagh (Maynooth Universit

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    by Shubnigg Added 111 Views / 0 Likes

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    by Shubnigg Added 185 Views / 0 Likes

    More information and download options: https://esawebb.org/videos/2110_035_BR_028/Credit:ESA/Arianespace

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    by Shubnigg Added 98 Views / 0 Likes

    This video features a new image of the barred spiral galaxy galaxy NGC 1559 as seen by the NASA/ESA/CSA James Webb Space Telescope. The galaxy hosts a visible central region with a distinct open pattern in the loosely-wound spiral arms. NGC 1559 resides a

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    by Shubnigg Added 131 Views / 0 Likes

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    Webb's views of M82 (transition video)

    by Shubnigg Added 130 Views / 0 Likes

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    by Shubnigg Added 240 Views / 0 Likes

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    by Shubnigg Added 226 Views / 0 Likes

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    by Shubnigg Added 161 Views / 0 Likes

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    by Shubnigg Added 270 Views / 0 Likes

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    by Shubnigg Added 172 Views / 0 Likes

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    Webb’s views of NGC 5068 (NIRCam and MIRI images)

    by Shubnigg Added 187 Views / 0 Likes

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    by Shubnigg Added 573 Views / 0 Likes

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    by Shubnigg Added 266 Views / 0 Likes

    My laptop ain't working so I am doing the best I can with what I got. Https://www.paypal.me/thornews

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    by Shubnigg Added 241 Views / 0 Likes

    The Atmospheric River dropped a lot of snow & rain & did some major damage but the real trouble looks to be headed for Europe. imho.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-

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    by shub Added 791 Views / 0 Likes

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