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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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    James Webb Space Telescope captures the ancient 'Firefly Sparkle' galaxy,

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    “Firefly Sparkle,” a galaxy that existed about 600 million years after the big bang, has been imaged by the James Webb Space Telescope. The "galaxy is gleaming with star clusters," according to NASA.Credit: NASA's Goddard Space Flight CenterMusic Credit:"

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    Spiral galaxy NGC 2566 in stunning JWST and Hubble views - See in 4K

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    The James Webb Space Telescope and Hubble Space Telescope have captured amazing views of spiral galaxy NGC 2566. Credit: Space.com | ESA, NASA & CSA / Hubble /Webb, A. Leroy, N. Bartmann (ESA/Webb), D. Thilker | edited by Steve Spaleta (https://www.instag

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    Tis the Season.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewisonhttps://www.patreon.com/thornews

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    Martian New Year tracked by NASA - Avalanches, exploding jets and more!

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    New Years day on Mars occurs in November. NASA explains the spring time changes on the Red Planet. Credit: NASA/JPL-Caltech

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    Brilliant fireball lights up skies over Indiana

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    The American Meteor Society recieved several reports of fireball in the skies over several cities in Indiana on Oct. 21, 2024. Credit: Space.com | footage courtesy: Mark, Mel Uberto, Brittany Lewis, Brett Turner, CarmelBakers | edited by [Steve Spaleta](h

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    U.S. Spacewalk 91 Animation - Friday, January 10, 2025

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    An animation of U.S. spacewalk 91 scheduled for Thurs. Jan. 16, when NASA astronauts Nick Hague and Suni Williams will exit the station’s Quest airlock to replace a rate gyro assembly that helps provide orientation control for the station, install patches

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    I am praying for all y'all.God bless everyone,T

  • 00:30 Pan of galaxy cluster MACS J1423 (NIRCam image)

    Pan of galaxy cluster MACS J1423 (NIRCam image)

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    NASA ejects Orion spacecraft's forward bay cover in test - Slow motion view

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    NASA tested the Orion spacecraft forward bay cover's ejection mechanism at the Neil Armstrong Test Facility in Sandusky, Ohio. Credit: NASA/Jordan Salkin and Quentin Schwinn | edited by Space.com

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    SpaceX Starship single engine test fire simulates flight 7 in-space burn

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    A single engine on the flight 7 SpaceX Starship was test fired on Dec. 17, 2024 to simulate an in-space burn. Credit: Space.com | footage courtesy: SpaceX | edited by Steve Spaleta (https://x.com/stevespaleta)

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    potm2409a

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    The open cluster Westerlund 1, showcased in this new Webb Picture of the Month, is located roughly 12 000 light-years away in the southern constellation Ara (the Altar) where it resides behind a huge interstellar cloud of gas and dust. It was discovered i

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    Pan: NGC 1672

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    This Hubble Picture of the week features NGC 1672, a barred spiral galaxy located 49 million light-years from Earth in the constellation Dorado. This galaxy is a multi-talented light show, showing off an impressive array of different celestial lights. Lik

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    Binary star system surprisingly found near monster black hole

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    A pair of stars orbiting one another has been found near the supermassive black hole Sagittarius A* using the European Southern Observatory’s Very Large Telescope (ESO’s VLT). Full Story: https://www.space.com/first-binary-stars-sgrA-black-holeCredit; ESO

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    Blastoff! SpaceX launches 21 Starlink satellites from Florida, nails landing

    by Added 44 Views / 0 Likes

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    thank you for being amazing.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewisonhttps://www.patreon.com/thornews

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    by shub Added 44 Views / 0 Likes

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    thank you for being awesome.God bless everyone,T

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