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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)

 

  • 00:30 Pan: A jellyfish galaxy adrift

    Pan: A jellyfish galaxy adrift

    by admin Added 7 Views / 0 Likes

    The jellyfish galaxy JW39 hangs serenely in this image from the NASA/ESA Hubble Space Telescope. This galaxy lies over 900 million light-years away in the constellation Coma Berenices, and is one of several jellyfish galaxies that Hubble has been studying

  • 03:18 UFO 'optical illusions:' Astronaut Scott Kelly says it's hard to I.D. strange objects in flight

    UFO 'optical illusions:' Astronaut Scott Kelly says it's hard to I.D. strange objects in flight

    by admin Added 5 Views / 0 Likes

    During a public meeting on Unidentified Anomalous Phenomena (UAP), retired NASA astronaut Scott Kelly talks how "optical illusions" during flights could be misconstrued. Credit: NASA

  • 02:51 Space to Ground: Storm Watch: June 2, 2023

    Space to Ground: Storm Watch: June 2, 2023

    by admin Added 8 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

  • 06:55 Wild Weird Weather Watch Weekend Hurricane Season 2023 day One. The Lightning Tho.

    Wild Weird Weather Watch Weekend Hurricane Season 2023 day One. The Lightning Tho.

    by admin Added 7 Views / 0 Likes

    I hope you are well.Stay Cool.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews

  • 04:04 Planets, Summer Triangle and more in June 2023 skywatching

    Planets, Summer Triangle and more in June 2023 skywatching

    by admin Added 8 Views / 0 Likes

    Find out where to spot Venus, Jupiter, Mars and Saturn this month. Also, the Summer Triangle shines bright along with the stars Spica and Arcturus. Night sky - What you can see this month: https://www.space.com/16149-night-sky.htmlBest night sky events th

  • 06:10 ASTRONAUTS TO CONDUCT SPACEWALKS FOR ADDITIONAL SOLAR ARRAY INSTALLATIONS

    ASTRONAUTS TO CONDUCT SPACEWALKS FOR ADDITIONAL SOLAR ARRAY INSTALLATIONS

    by admin Added 9 Views / 0 Likes

    Expedition 69 astronauts Steve Bowen and Woody Hoburg are scheduled to conduct a pair of spacewalks June 9 and 15 to install the next pair of ISS Roll Out Solar Arrays (IROSAs) on the starboard truss of the International Space Station. The arrays will aug

  • 01:48 SpaceX CRS-28 mission to space station - Science payloads explained

    SpaceX CRS-28 mission to space station - Science payloads explained

    by admin Added 6 Views / 0 Likes

    Learn what science payloads are being shipped aboard Cargo Dragon to the International Space Station on the SpaceX CRS-28 mission.Credit: NASA

  • 00:58 SpaceX has flown 10 human spaceflight missions! Quick look back

    SpaceX has flown 10 human spaceflight missions! Quick look back

    by admin Added 4 Views / 0 Likes

    SpaceX has flown 9 humans to 9 more times since the Demo-2 crew launched to the International Space Station in 2020. See the highlights here. Watch the Demo-2 launch: https://www.space.com/spacex-crew-dragon-demo-2-test-flight-explained.htmlCredit: SpaceX

  • 00:58 Thank You For Flying SpaceX

    Thank You For Flying SpaceX

    by shub Added 6 Views / 0 Likes

    On May 30, 2022, Falcon 9 launched Dragon on its historic first human spaceflight mission to the International Space Station. That mission restored and expanded human spaceflight capability to the U.S. SpaceX has now launched 10 human spaceflight missions

  • 01:07 See amazing Hubble Space Telescope imagery of a globular cluster in 4k

    See amazing Hubble Space Telescope imagery of a globular cluster in 4k

    by admin Added 7 Views / 0 Likes

    The Hubble Space Telescope has captured imagery of globular cluster NGC 6325. It is located "26,000 light years from Earth in the constellation Ophiuchus," according to NASA/ESA.Credit: Space.com | footage courtesy: ESA/Hubble & NASA, E. Noyola, R. Cohen

  • 09:43 Blastoff! SpaceX launches Starlink batch from California, nails landing

    Blastoff! SpaceX launches Starlink batch from California, nails landing

    by admin Added 8 Views / 0 Likes

    A SpaceX Falcon 9 rocket carrying 52 Starlink satellites launched from California's Vandenberg Space Force Base on May 31, 2023. Full Story: https://www.space.com/spacex-starlink-launch-group-2-10The rocket's first stage landed on the "Of Course I Still L

  • Starlink Mission

    Starlink Mission

    by shub Added 6 Views / 0 Likes

    SpaceX is targeting Tuesday, May 30 at 11:02 p.m. PT (06:02 UTC on May 31) for a Falcon 9 launch of 52 Starlink satellites to low-Earth orbit from Space Launch Complex 4 East (SLC-4E) at Vandenberg Space Force Base in California. If needed, a backup oppor

  • Starlink Mission Control Audio

    Starlink Mission Control Audio

    by shub Added 7 Views / 0 Likes

    This is the vehicle trajectory and mission control audio without any additional commentary. There may be very long periods of silence. For our full hosted webcast, visit https://www.spacex.com/launches/

  • 10:31 SpaceX splashdown! Axiom Space Ax-2 crew back on Earth

    SpaceX splashdown! Axiom Space Ax-2 crew back on Earth

    by admin Added 5 Views / 0 Likes

    Record-breaking astronaut Peggy Whitson and her Axiom Space Ax-2 crewmates John Shoffner, Ali Alqarni, and Rayyanah Barnawi splashed down in the Gulf of Mexico aboard SpaceX Crew Dragon Freedom on May 30, 2023.Credit: SpaceX

  • Ax-2 Mission Control Audio

    Ax-2 Mission Control Audio

    by shub Added 9 Views / 0 Likes

    This is the vehicle trajectory and mission control audio without any additional commentary. There may be very long periods of silence. For our full hosted webcast, visit https://www.spacex.com/launches/

  • Ax-2 Mission | Splashdown

    Ax-2 Mission | Splashdown

    by shub Added 6 Views / 0 Likes

    On Tuesday, May 30 at 11:05 a.m. ET, Dragon autonomously undocked from the International Space Station. After performing a series of burns to move away from the space station, Dragon will conduct multiple orbit-lowering maneuvers, jettison its trunk, and

  • 02:11 Relive SpaceX Starship's epic integrated launch in these amazing highlights!

    Relive SpaceX Starship's epic integrated launch in these amazing highlights!

    by admin Added 7 Views / 0 Likes

    SpaceX Starship and its Super Heavy booster launched on April 20, 2023. See several views of the flight and mission control in these highlights. [Watch entire launch and explosive ending](https://www.space.com/spacex-starship-first-space-launch)Credit: Sp

  • 08:49 Ax-2 crew undocks from space station aboard SpaceX Dragon for return trip

    Ax-2 crew undocks from space station aboard SpaceX Dragon for return trip

    by admin Added 15 Views / 0 Likes

    Record-breaking astronaut Peggy Whitson and her Axiom Space Ax-2 crewmates John Shoffner, Ali Alqarni, and Rayyanah Barnawi departed the International Space Station aboard SpaceX Crew Dragon Freedom on May 30. 2023. They are scheduled to splashdown off th

  • Ax-2 Mission Control Audio

    Ax-2 Mission Control Audio

    by shub Added 13 Views / 0 Likes

    This is the vehicle trajectory and mission control audio without any additional commentary. There may be very long periods of silence. For our full hosted webcast, visit https://www.spacex.com/launches/

  • Ax-2 Mission | Undocking

    Ax-2 Mission | Undocking

    by shub Added 8 Views / 0 Likes

    SpaceX, Axiom Space, and NASA are targeting no earlier than Tuesday, May 30 at 11:05 a.m. ET for Dragon to depart from the International Space Station. After performing a series of burns to move away from the space station, Dragon will conduct multiple or

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