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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)

 

  • 01:10 X2 flare! Sunpot's powerful eruption captured in multiple wavelengths

    X2 flare! Sunpot's powerful eruption captured in multiple wavelengths

    by Shubnigg Added 89 Views / 0 Likes

    Sunspot AR3738 erupted with a X2-class solar flare on July 16, 2024. See the blast in multiple wavelengths from NASA's Solar Dynamics Observatory. Footage courtesy: NASA / SDO and the AIA, EVE, and HMI science teams, helioviewer.org | edted by Space.com's

  • 10:41 Blue Origin launches and lands New Shepard NS-26 crew

    Blue Origin launches and lands New Shepard NS-26 crew

    by Shubnigg Added 89 Views / 0 Likes

    Blue Origin successfully completed its eighth human spaceflight on Thursday, August 29, 2024. The NS-26 crew included: Nicolina Elrick, Rob Ferl, Eugene Grin, Dr. Eiman Jahangir, Karsen Kitchen, and Ephraim Rabin. Credit: Blue Origin Youtube

  • 00:42 'Too much uncertainty' to bring astronauts back on Starliner #space #shorts

    'Too much uncertainty' to bring astronauts back on Starliner #space #shorts

    by Shubnigg Added 89 Views / 0 Likes

    NASA chief Bill Nelson and commercial crew program manager Steve Stich explain the decision to bring the Starliner astronauts back to Earth on a SpaceX Dragon.

  • 08:48 SpaceX Polaris Dawn spacewalk begins with suit pressurization

    SpaceX Polaris Dawn spacewalk begins with suit pressurization

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    The Polaris Dawn crew Jared Isaacman, Scott "Kidd" Poteet, Sarah Gillis and Anna Menon has begun their EVA aboard SpaceX Dragon with their suits being pressurized. Credit: SpaceX

  • 00:30 Pan of Digel Cloud 2S

    Pan of Digel Cloud 2S

    by Added 89 Views / 0 Likes

    The NASA/ESA/CSA James Webb Space Telescope has observed the outskirts of our Milky Way galaxy. Known as the Extreme Outer Galaxy, this region is located more than 58 000 light-years from the Galactic centre.To learn more about how a local environment aff

  • 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

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    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)

  • 01:13 Blue Origin fires up New Glenn rocket second stage in test

    Blue Origin fires up New Glenn rocket second stage in test

    by Added 89 Views / 0 Likes

    Blue Origin's New Glenn rocket second stage was run through a static fire test on Sept. 23, 2024. Credit: Blue Origin | edted by Space.com's Steve Spaleta (https://x.com/stevespaleta) Music: Jupiter Aurora by David Celeste / courtesy of http://www.epidemi

  • Watch live! SpaceX to launch Crew-9 astronauts to space station

    Watch live! SpaceX to launch Crew-9 astronauts to space station

    by Added 89 Views / 0 Likes

    Crew-9 will send NASA's Nick Hague and Russian cosmonaut Aleksandr Gorbunov to the ISS. They'll live on the station for about five months, coming home in February 2025. Crew Dragon capsules usually carry four people to the orbiting lab, but NASA is saving

  • 10:02 Annular solar eclipse peaks! See the 'ring of fire' from Easter Island

    Annular solar eclipse peaks! See the 'ring of fire' from Easter Island

    by Added 89 Views / 0 Likes

    Timeanddate.com has delivered a view of the peak of the annular solar eclipse from Easter Island in the Pacific Ocean.Credit: Timeanddate.comMusic: Analog Dreams by Blue Saga / courtesy of http://www.epidemicsound.com

  • 08:25 Blastoff! Vulcan Centaur rocket launches on 2nd test flight

    Blastoff! Vulcan Centaur rocket launches on 2nd test flight

    by Added 89 Views / 0 Likes

    The United Launch Alliance's Vulcan Centaur rocket launched from Space Launch Complex-41 (SLC-41) at Florida's Cape Canaveral Space Force Station on Oct. 4, 2024. "The Cert-2 mission is the second flight of Vulcan Centaur after January's Cert-1, which sen

  • 01:05 Fireball lights up skies over Ohio, Pennsylvania and Toronto

    Fireball lights up skies over Ohio, Pennsylvania and Toronto

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    The American Meteor Society recieved several reports of fireball in the skies over Ohio, Pennsylvania, Ontario and more on Oct. 21, 2024. Credit: Space.com | footage courtesy: Ryan Connor, North Royalton, Ohio - John Oelschlager, West Mifflin, Pennsylvani

  • 08:24 Splashdown! SpaceX Dragon with Crew-8 returns to Earth after 235 days in space

    Splashdown! SpaceX Dragon with Crew-8 returns to Earth after 235 days in space

    by Added 89 Views / 0 Likes

    SpaceX Crew-8 astronauts Matthew Dominick, Michael Barratt and Jeanette Epps all with NASA and Roscosmos cosmonaut Alexander Grebenkin splashed down in the Gulf of Mexico off the coast of Pensacola, Florida on Friday (Oct. 25) at 3:29 a.m. EDT (0729 GMT).

  • 00:30 Transition video of the Phantom Galaxy (NIRCam image + MIRI and NIRCam image)

    Transition video of the Phantom Galaxy (NIRCam image + MIRI and NIRCam image)

    by Added 89 Views / 0 Likes

    In August 2022, to mark the launch of the Picture of the Month series, ESA/Webb published a stunning image of the Phantom Galaxy (also known as M74 and NGC 628). Now, this series is revisiting the target to feature new data on this iconic spiral galaxy.M7

  • Watch live! China's Shenzhou 18 crew returns to Earth

    Watch live! China's Shenzhou 18 crew returns to Earth

    by Added 89 Views / 0 Likes

    The Shenzhou 18 crew, Ye Guangfu, Li Cong, and Li Guangsu, are returning to Earth on around 12pm ET on Nov. 3, 2024 after near (1:00am Beijing time - Nov. 4). Watch them land at the Dongfeng landing site in north China's Inner Mongolia Autonomous Region.

  • 01:39 Early universe black hole devoured matter at astonishing rate

    Early universe black hole devoured matter at astonishing rate

    by Added 89 Views / 0 Likes

    U.S. National Science Foundation NOIRLab astronomers, using data from the James Webb Space Telescope and the Chandra X-ray Observatory, have discovered an early universe supermassive black hole "consuming matter at a phenomenal rate — over 40 times the th

  • 01:10 Blastoff! China Lijian-1 rocket launches 15 satellites, including Oman's first

    Blastoff! China Lijian-1 rocket launches 15 satellites, including Oman's first

    by Added 89 Views / 0 Likes

    China's Lijian-1 rocket launched 15 satellites, including one for Oman, from the Jiuquan Satellite Launch Center on Oct. 11, 2024. Credit: Space.com | footage courtesy: China Central Television (CCTV) | edited by [Steve Spaleta](https://x.com/stevespaleta

  • 09:02 Blastoff! SpaceX launches 24 Starlink satellites, nails 375th booster recovery

    Blastoff! SpaceX launches 24 Starlink satellites, nails 375th booster recovery

    by Added 89 Views / 0 Likes

    A SpaceX Falcon 9 rocket launched 24 Starlink satellites from NASA's Kennedy Space Center on Nov. 26, 2024 at 11:41 p.m. EST (0441 GMT on Wednesday, Nov. 27).The Falcon 9's first stage returned to Earth about eight minutes after launch as planned, touchin

  • 03:15 Meet NASA Astronaut Anne McClain, Crew-10 Commander

    Meet NASA Astronaut Anne McClain, Crew-10 Commander

    by Added 89 Views / 0 Likes

    Anne McClain will serve as crew commander for NASA’s SpaceX Crew-10 mission, making this her second trip to the International Space Station. A colonel in the U.S. Army, she earned her bachelor’s degree in Mechanical Engineering from the U.S. Military Acad

  • 08:02 Whoa. Record amount of Intricate Gravity Waves AF RN?

    Whoa. Record amount of Intricate Gravity Waves AF RN?

    by Shubnigg Added 88 Views / 0 Likes

    yothe atmosphere is wild.wild.stay cool.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews

  • 04:35 RED ALERT! BIG Texas Floods Next Week! Sinkhole City! Hurricanes Coming*! Avoid World War 3!

    RED ALERT! BIG Texas Floods Next Week! Sinkhole City! Hurricanes Coming*! Avoid World War 3!

    by Shubnigg Added 88 Views / 0 Likes

    stay cool,God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews

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