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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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    BepiColombo spacecraft makes closest Mercury flyby to date - See a time-lapse

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    The BepiColombo spacecraft made the "closest flyby of a planet ever" when it flew by Mercury on September 4, 2024, according to ESA. See time-lapsed imagery of the flyby shot from Sept. 4-5, 2024. Credit: ESA/BepiColombo/MTMACKNOWLEDGEMENTSImage processin

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    The Chang'e-4 mission's Yutu-2 rover is still active on the lunar surface. It capture new imagery on Sept. 10, 2024. The Chang'e-4 mission landed ont he moon in 2019. Credit: Space.com | footage courtesy: China Central Television (CCTV) | edited by [Steve

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    James Webb Space Telescope captures amazing view of galactic mashup

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    It's the biggest 7 day warning area ever issue by the NWS.It's going to be a wild eclipse week, y'all.Buckle up.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewisonhttps://www.patreon.com/thornews

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    Isar Aerospace's first Spectrum rocket suffered an anomaly about 18 seconds into its first-ever launch and crashed on March 30, 2025. Full Story: https://www.space.com/space-exploration/launches-spacecraft/1st-ever-orbital-rocket-launch-from-european-soil

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    by Shubnigg Added 84 Views / 0 Likes

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    by Shubnigg Added 84 Views / 0 Likes

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    by Shubnigg Added 84 Views / 0 Likes

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    by Shubnigg Added 84 Views / 0 Likes

    This storm is packing a punch.God bless everyone,T

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    by Shubnigg Added 84 Views / 0 Likes

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    by Shubnigg Added 84 Views / 0 Likes

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    by Shubnigg Added 84 Views / 0 Likes

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  • 00:51 Polaris Dawn EVA Animation

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    by shub Added 84 Views / 0 Likes

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    it's a cliffhanger.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewisonhttps://www.patreon.com/thornews

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    wow.God bless everyoneStay cool.Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewisonhttps://www.patreon.com/thornews

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