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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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    SpaceX Starship, Blue Moon Lander and Others May Deliver Payloads to Moon For NASA

    by Shubnigg Added 483 Views / 0 Likes

    SpaceX, Blue Origin, Ceres Robotics, Sierra Nevada Corporation, and Tyvak Nano-Satellite Systems Inc. will be able to bid on lunar payload deliveries. -- NASA's Artemis Program - Learn More: https://www.space.com/artemis-program.htmlCredit: NASA

  • 10:12 SpaceX Starship’s 2nd flight footage released under Freedom of Information Act - See it all!

    SpaceX Starship’s 2nd flight footage released under Freedom of Information Act - See it all!

    by Shubnigg Added 99 Views / 0 Likes

    NASA has released views of several angles of SpaceX Starship’s second test flight. The massive rocket launched from SpaceX's Starbase facility in South Texas on Nov. 18, 2023. Credit: NASA Music: The Alabaster Coast by Hanna Lindgren / courtesy of http://

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    SpaceX Super Heavy Booster 4 rolled out to launch site

    by Shubnigg Added 259 Views / 0 Likes

    Watch footage of the rollout of SpaceX's Booster 4, the Super Heavy prototype that will attempt to launch Starship SN20 into orbit. Credit: Space.com | footage courtesy: SPadre.com (https://twitter.com/SpacePadreIsle) / Elon Musk / SpaceX | produced & edi

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    SpaceX Super Heavy Booster 7 fired up for long-duration test

    by Shubnigg Added 219 Views / 0 Likes

    SpaceX conducted a long-duration static fire test of the Super Heavy Booster 7 at their Starbase facility in South Texas. Anthony Gomez captured video of the test from a few miles away at the Rocket Ranch, Texas outpost. Credit: Anthony Gomez / Rocket Ran

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    SpaceX Super Heavy Booster 7 fired up in seven engine test, Elon Musk shares video

    by Shubnigg Added 242 Views / 0 Likes

    SpaceX conducted a static fire test of the Super Heavy Booster 7 at their Starbase facility in South Texas on Sept. 19, 2022. They fired up seven engines, the most to date in testing the Super Heavy rocket. Credit: Elon Musk/SpaceX | edited by Space.com's

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    SpaceX Super Heavy Booster 7 static fire seen from Rocket Ranch

    by Shubnigg Added 218 Views / 0 Likes

    SpaceX conducted a static fire test of the Super Heavy Booster 7 at their Starbase facility in South Texas on Aug. 31, 2022. Anthony Gomez captured video of the test from a few miles away at the Rocket Ranch, Texas outpost (https://www.rocketranchbocachic

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    SpaceX Super Heavy booster test-fired for first time!

    by Shubnigg Added 283 Views / 0 Likes

    SpaceX conducted a static fire test of their Super Heavy prototype Booster 3 for the first time on July 19, 2021 in Boca Chica, Texas. Watch the rocket rollout to the pad: https://www.space.com/spacex-starship-super-heavy-booster-rollout-videoCredit: Spac

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    SpaceX Super Heavy Booster transported back to Starship factory in amazing time-lapse

    by Shubnigg Added 226 Views / 0 Likes

    Super Heavy Booster 7 was transported back to the Starship factory in Texas for "robustness upgrades ahead of flight," according to SpaceX. The massive rocket underwent a seven engine static fire test on Sept. 19, 2022: https://www.space.com/spacex-starsh

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    SpaceX Super Heavy booster's 7 engine test in views from Rocket Ranch & Elon Musk

    by Shubnigg Added 222 Views / 0 Likes

    SpaceX conducted a static fire test of the Super Heavy Booster 7 at their Starbase facility in South Texas on Sept. 19, 2022. They fired up seven engines, the most to date in testing the Super Heavy rocket. Full Story: https://www.space.com/spacex-starshi

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    SpaceX Super Heavy fired up, Blue Origin launches crew & more in VFS Weekly highlights

    by Shubnigg Added 269 Views / 0 Likes

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    SpaceX Super Heavy Rocket Could Have 37 Engines - Elon Musk Explains

    by Shubnigg Added 417 Views / 0 Likes

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    SpaceX SuperDraco Thruster Firing

    by shub Added 527 Views / 0 Likes

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    SpaceX Test Fires Falcon Heavy Rocket for 1st Time

    by Shubnigg Added 656 Views / 0 Likes

    SpaceX Test Fires Falcon Heavy Rocket for 1st Time

  • 05:19 SpaceX test fires flight 6 Starship! See in real-time and super slow-mo

    SpaceX test fires flight 6 Starship! See in real-time and super slow-mo

    by Added 94 Views / 0 Likes

    SpaceX conducted a static fire test of the flight 6 Starship at their Starbase facility in South Texas on Sep. 18, 2024. Credit: SpaceX | edited by Space.com's Steve Spaleta (https://x.com/stevespaleta)

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    SpaceX Test Fires Rocket Carrying Crew Dragon

    by Shubnigg Added 455 Views / 0 Likes

    SpaceX completed a static fire test of the Falcon 9 rocket that will carry the Crew Dragon capsule on its first test flight.Credit: SpaceX

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    SpaceX Test Fires The Next Generation Falcon 9 | Video

    by shub Added 882 Views / 0 Likes

    The private space company test fired the engines on upgraded Falcon 9 (v.1.1) on September 19th, 2013. The target launch window for the rocket opens on September 29th.

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    SpaceX Testing - (Alternate Version) SuperDraco Engine

    by shub Added 552 Views / 0 Likes

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    SpaceX Testing - Draco Test Firings

    by shub Added 543 Views / 0 Likes

    Test firing a set of five Draco thrusters for various intervals, conducted at our Texas Test Facility. More information on SpaceX: 
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    SpaceX Testing - Draco Thruster Vacuum Firing

    by shub Added 513 Views / 0 Likes

    More information on SpaceX:
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 http://twitter.com/spacex http://www.facebook.com/SpaceX

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    SpaceX Testing - Dragon Drop Test (HD)

    by shub Added 547 Views / 0 Likes

    Visit: http://www.spacex.com/ for more information on SpaceX, Dragon, Falcon 9, Falcon Heavy, upcoming rocket launches, or Elon Musk. SpaceX conducted the Dragon high altitude drop test on 12 August 2010 to validate the parachute deployment systems and re

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