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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)

 

  • 01:31 Total Solar Eclipse 2024 explained! Date, maps, times and more

    Total Solar Eclipse 2024 explained! Date, maps, times and more

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    The United States, Mexico and Canada will experience a total solar eclipse on April 8, 2024. Space.com's Brett Tingley explains what you can expect. Total solar eclipse 2024: Everything you need to know: https://www.space.com/41552-total-solar-eclipse-202

  • 01:50 Blastoff! China's Long March 8 launches relay satellite on moon mission

    Blastoff! China's Long March 8 launches relay satellite on moon mission

    by admin Added 14 Views / 0 Likes

    China's Long March 8 rocket launched the Queqiao-2 relay satellite into Earth-Moon transfer orbit from the Wenchang Space Launch Site on March 20, 2024. "Queqiao-2 will serve as a relay platform for the fourth phase of China's lunar exploration program, p

  • 07:39 Astronaut Moments: Tracy Dyson

    Astronaut Moments: Tracy Dyson

    by admin Added 14 Views / 0 Likes

    A veteran of two spaceflights, NASA astronaut Tracy Dyson is prepared for her third mission to the International Space Station aboard the Soyuz MS-25 spacecraft, launching from Kazakhstan on March 21. This mission as an Expedition 70 and 71 flight enginee

  • 08:37 Blastoff! SpaceX launches Starlink batch from Califonia at dusk, nails landing

    Blastoff! SpaceX launches Starlink batch from Califonia at dusk, nails landing

    by admin Added 21 Views / 0 Likes

    A SpaceX Falcon 9 rocket launched 22 Starlink satellites from California's Vandenberg Space Force Base on March 18, 2024 at 10:28 p.m. EDT (7:28 p.m. local California time; 0228 GMT on March 19).According to Space.com, the Falcon 9's first stage came back

  • 08:13 SpaceX Starship launch 'shockwaves' seen in amazing slow motion footage

    SpaceX Starship launch 'shockwaves' seen in amazing slow motion footage

    by admin Added 16 Views / 0 Likes

    The incredible power of SpaceX Starship is on display in slow motion footage that show shockwaves propagating from the launch on March 14, 2024.Also, see slow motion footage of the atmospheric re-entry of Starship. Credit: Space.com | footage courtesy: Sp

  • 00:30 Pan of UGC 5829

    Pan of UGC 5829

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    This gauzy-looking celestial body is UGC 5829, an irregular galaxy that lies about 30 million light-years away. Despite there not being many observations of this relatively faint galaxy, it has the distinction of having a descriptive soubriquet: the Spide

  • 00:30 Pan of NGC 4423

    Pan of NGC 4423

    by admin Added 18 Views / 0 Likes

    Here we see NGC 4423, a galaxy that lies about 55 million light-years away in the constellation Virgo. In this image NGC 4423 appears to have quite an irregular, tubular form, so it might be surprising to find out that it is in fact a spiral galaxy. Knowi

  • 00:30 Pan of LEDA 42160

    Pan of LEDA 42160

    by admin Added 14 Views / 0 Likes

    This image shows LEDA 42160, a galaxy about 52 million light-years from Earth in the constellation Virgo. The dwarf galaxy is one of many forcing its way through the comparatively dense gas in the Virgo cluster, a massive cluster of galaxies. The pressure

  • 10:22 Elon says WOKE Ai might KILL YOU! McDonalds HACKED across the Globe! BIG Storms South USA Today!

    Elon says WOKE Ai might KILL YOU! McDonalds HACKED across the Globe! BIG Storms South USA Today!

    by admin Added 17 Views / 0 Likes

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  • 02:15 Relive SpaceX Starship's epic third launch in two-minute time-lapse

    Relive SpaceX Starship's epic third launch in two-minute time-lapse

    by admin Added 17 Views / 0 Likes

    SpaceX launched Starship on Integrated Flight Test 3 from their Starbase facility in South Texas on March 14, 2024. Full Story: https://www.space.com/spacex-starship-third-test-flight-launchCredit: SpaceX | time-lapse edited by Space.com's Steve Spaleta (

  • 01:09 See Jupiter spin in animated Hubble Space Telescope observations

    See Jupiter spin in animated Hubble Space Telescope observations

    by admin Added 17 Views / 0 Likes

    Hubble Space Telescope images of Jupiter, captured in January 2024, have been "photo-mapped onto a sphere," and animated into a full rotation, according to ESA/NASA. Credit: Space.com | NASA, ESA, J. DePasquale (STScI), A. Simon (NASA-GSFC) | edited by [S

  • 04:10 Space to Ground: Crew-7, Departing: March 15, 2024

    Space to Ground: Crew-7, Departing: March 15, 2024

    by admin Added 18 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

  • 03:49 Red Alert! Arkansas et al! Super Freak* 1200 mile pre-eclipse storm dropping dangerous tornadoes!

    Red Alert! Arkansas et al! Super Freak* 1200 mile pre-eclipse storm dropping dangerous tornadoes!

    by admin Added 11 Views / 0 Likes

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

  • 00:46 See SpaceX Starship's amazing 3rd launch in epic time-lapse #spacex  #starship  #launch

    See SpaceX Starship's amazing 3rd launch in epic time-lapse #spacex #starship #launch

    by admin Added 17 Views / 0 Likes

    SpaceX launched on its 3rd integrated test flight on March 14, 2024. The first few minutes are time-lapsed here. Featuring the song "Broken Glass" by Logan Spaleta https://www.loganspaleta.com/musicCredit: SpaceX

  • 00:46 See SpaceX Starship's amazing 3rd launch in epic time-lapse #spacex #starship #launch

    See SpaceX Starship's amazing 3rd launch in epic time-lapse #spacex #starship #launch

    by admin Added 15 Views / 0 Likes

    SpaceX launched on its 3rd integrated test flight on March 14, 2024. The first few minutes are time-lapsed here. Featuring the song "Broken Glass" by Logan Spaleta https://www.loganspaleta.com/musicCredit: SpaceX

  • 08:08 Wow! Watch SpaceX Starship re-enter Earth's atmosphere in these incredible views

    Wow! Watch SpaceX Starship re-enter Earth's atmosphere in these incredible views

    by admin Added 14 Views / 0 Likes

    Watch the plasma build up around SpaceX Starship during its atmospheric re-entry on March 14, 2024. Credit: SpaceX

  • 04:34 RED ALERT! Tornadoes on the ground in Kansas! & More Severe Weather on the way for the USA!

    RED ALERT! Tornadoes on the ground in Kansas! & More Severe Weather on the way for the USA!

    by admin Added 16 Views / 0 Likes

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  • 01:22 SpaceX Starship to launch again! Get hyped up with program highlights

    SpaceX Starship to launch again! Get hyped up with program highlights

    by admin Added 18 Views / 0 Likes

    As SpaceX prepares for the next integrated test flight of Starship, take a look back at some of the highlights from the program. When is the next launch? learn more: https://www.space.com/spacex-starship-flight-3-launch-what-timeCredit: SpaceX

  • 01:22 Starship | Preparing for Third Flight Test

    Starship | Preparing for Third Flight Test

    by shub Added 18 Views / 0 Likes

    The world's most powerful launch vehicle is ready for flight. The third flight test aims to build on what we’ve learned from previous flights while attempting a number of ambitious objectives. Recursive improvement is essential as we work to build a fully

  • 01:19 Japanese company Space One developing four-stage Kairos solid rocket

    Japanese company Space One developing four-stage Kairos solid rocket

    by admin Added 14 Views / 0 Likes

    If successful, Space One will be first Japanese private launch company to reach orbit. The Kairos rocket will launch from Space Port Kii in Kushimoto, western Japan. Credit: Space.comn | animation: Space One | edited by [Steve Spaleta](https://twitter.com

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