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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)

 

  • 02:03 New Watch BepiColumbo's orbital dance to get to Mercury in this animation

    Watch BepiColumbo's orbital dance to get to Mercury in this animation

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    The joint Europe-Japanese mission to Mercury will use "nine gravity assist flyby maneuvers" to get into its final orbit around the planet Mercury. -- Europe's Mercury-bound BepiColombo will swing past Earth soon! Here's what you need to know.: https://www

  • 06:52 New What's Up in Space by Space.com (April 2020)

    What's Up in Space by Space.com (April 2020)

    by admin Added 49 Views / 0 Likes

    The Space.com team, like everyone else, may be stuck at home amid the coronavirus pandemic, but space exploration is still going on. Here's what to expect in April with Space.com Editor-in-Chief Tariq Malik and Community Manager Stevie Ward! -- Join the S

  • 05:39 New Video from Space - Weekly highlights: Week of March 29, 2020

    Video from Space - Weekly highlights: Week of March 29, 2020

    by admin Added 44 Views / 0 Likes

    China continued work on their new crew spacecraft, the Milky Way’s warped disk has been studied using ESA’s Gaia mission, NASA astronaut Jessica Meir gave some tips on staying healthy at home, air pollution over the United States declined significantly in

  • 02:04 New Space to Ground: Bartolomeo: 04/03/2020

    Space to Ground: Bartolomeo: 04/03/2020

    by admin Added 40 Views / 0 Likes

    NASA's Space to Ground is your weekly update on what's happening aboard the International Space Station. Got a question or comment? Use #AskNASA to talk to us.Learn more about the important research being operated on Station:https://www.nasa.gov/iss-scien

  • 01:11 New SpaceX Starship SN3 collapses during pressure test

    SpaceX Starship SN3 collapses during pressure test

    by admin Added 26 Views / 0 Likes

    SpaceX's Starship SN3 prototype failed during a pressure test on April 2, 2020. Full Story https://www.space.com/spacex-starship-sn3-pressure-test-failure.htmlOn Twitter, SpaceX CEO Elon Musk said it "may have been a test configuration mistake. Some valve

  • 1:19:01 New Nostradamus April 2020 Breakdown

    Nostradamus April 2020 Breakdown

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  • 08:52 New Comet c/2019 Y4 Atlas is rapidly brightening! and has TWO MONTHS to get brighter!

    Comet c/2019 Y4 Atlas is rapidly brightening! and has TWO MONTHS to get brighter!

    by admin Added 31 Views / 0 Likes

    This comet may turn out to be the comet of the century!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

  • 13:21 New Texas Tornadoes, Hail & Flood Friday! West Coast storm! a strange Jupiter & Saturn connection?

    Texas Tornadoes, Hail & Flood Friday! West Coast storm! a strange Jupiter & Saturn connection?

    by admin Added 31 Views / 0 Likes

    April weather will probably be weird.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

  • 00:55 New NASA unfolds James Webb Space Telescope mirrors in test

    NASA unfolds James Webb Space Telescope mirrors in test

    by admin Added 31 Views / 0 Likes

    NASA's James Webb Space Telecopes were unfolded into their final configuration in a test conducted at the Goddard Space Flight Center. Full Story: https://www.space.com/james-webb-space-telescope-mirror-deploy-video.htmlCredit: NASA Goddard Space Flight C

  • 02:46 New Elusive mid-sized black hole found using Hubble

    Elusive mid-sized black hole found using Hubble

    by admin Added 32 Views / 0 Likes

    The Hubble Space Telescope has been used to find an intermediate-sized black hole, a rare feat. Story: Hubble's best evidence yet for 'missing link' of black holes may solve 14-year-old space mystery (https://www.space.com/black-hole-missing-link-hubble-t

  • 13:40 New CoronaVirus update: Approaching 1 Million Infections world Wide

    CoronaVirus update: Approaching 1 Million Infections world Wide

    by admin Added 24 Views / 0 Likes

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  • 17:31 New 271 Rivers Flooding! Possible Texas Tornadoes on Friday! Snow for Wyoming! Ice for the Dakotas!

    271 Rivers Flooding! Possible Texas Tornadoes on Friday! Snow for Wyoming! Ice for the Dakotas!

    by admin Added 21 Views / 0 Likes

    the weather is weird.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

  • 01:15 New Seen from Space: Significant drop in air pollution over US in March 2020

    Seen from Space: Significant drop in air pollution over US in March 2020

    by admin Added 55 Views / 0 Likes

    The global health crisis has drastically reduced the levels of nitrogen dioxide in the atmosphere over the United States, as seen in these views from ESA's Sentinel-5P satellite. Credit: Space.com / footage courtesy: Google Maps / ESA / produced & edited

  • 01:08 New SpaceX Starship SN3 hoisted onto test stand in time-lapse video

    SpaceX Starship SN3 hoisted onto test stand in time-lapse video

    by admin Added 27 Views / 0 Likes

    SpaceX Starship SN3 prototype was lifted onto a test stand at the private spaceflight company's Boca Chica, Texas facility on March 29, 2020. -- SpaceX unveils users' guide for giant Starship rocket: https://www.space.com/spacex-starship-transportation-sy

  • 03:19 New Planets and the moon in April 2020 skywatching guide

    Planets and the moon in April 2020 skywatching guide

    by admin Added 52 Views / 0 Likes

    Find out where Venus, Mars, Jupiter and Saturn are in the night sky during April. Also, learn about the "moon illusion." - Night Sky April 2019: What you can see this month [maps]: https://www.space.com/16149-night-sky.htmlCredit: NASA/JPL-Caltech

  • 1:45:03 New March 2020 Ends.

    March 2020 Ends.

    by admin Added 26 Views / 0 Likes

  • 09:16 New New Solar Cycle 25 Sunspot! CME! and Comet Y4 Atlas at 8.7 Magnitude!

    New Solar Cycle 25 Sunspot! CME! and Comet Y4 Atlas at 8.7 Magnitude!

    by admin Added 23 Views / 0 Likes

    I love the Heavens.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

  • 17:47 New CoronaVirus update: It is bad & getting worse.

    CoronaVirus update: It is bad & getting worse.

    by admin Added 25 Views / 0 Likes

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  • 11:14 New 6.5 Idaho Earthquake, Strange Retrograding Storm & Heavy Rain for Texas this Week.

    6.5 Idaho Earthquake, Strange Retrograding Storm & Heavy Rain for Texas this Week.

    by admin Added 20 Views / 0 Likes

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  • 01:30 New Coronavirus impact seen from space in before and after satellite images

    Coronavirus impact seen from space in before and after satellite images

    by admin Added 61 Views / 0 Likes

    The coronavirus pandemic has led to a massive decrease in movement of people around the world, which is evident in these satellite images. See more before and after images: https://www.space.com/coronavirus-impact-from-space-before-and-after-satellite-ima

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