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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)

 

  • 00:30 Pan: FS Tau

    Pan: FS Tau

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    FS Tau is a multi-star system made up of FS Tau A, the bright star-like object near the middle of the image, and FS Tau B (Haro 6-5B), the bright object to the far right that is partially obscured by a dark, vertical lane of dust. The young objects are su

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    by admin Added 28 Views / 0 Likes

    Eclipse season 2024: day 2 - stay cool.God bless everyone.Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews

  • 00:53 Zoom into the Milky Way's Sagittarius A* black hole! New Event Horizon Telescope image

    Zoom into the Milky Way's Sagittarius A* black hole! New Event Horizon Telescope image

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    A new image of supermassive black hole Sagittarius A* (Sgr A*). from the Event Horizon Telescope (EHT) collaboration "has uncovered strong and organised magnetic fields spiraling from its edge," according to ESO. Zoom into the view here. Credit: ESO/L. Ca

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    China to use adjustable 'net' to catch reusable rockets - See an animation

    by admin Added 28 Views / 0 Likes

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    by admin Added 28 Views / 0 Likes

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  • Watch Live! Final launch of Delta IV Heavy with secret US spy satellite

    Watch Live! Final launch of Delta IV Heavy with secret US spy satellite

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    For the last 64 years, United Launch Alliance's (ULA's) heavy-lift rocket has led an impressive career lofting large payloads into space. However, the rocket is scheduled to lift off one last time when it launches from Space Launch Complex-37 at Cape Cana

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    Sierra Space 'Ghost' to 'return objects' to Earth

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    Sierra Space is developing a "low beta reentry vehicle" to "safely return objects from space – and through space – directly to precise locations on Earth." Credit: Sierra Space

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    See Delta IV Heavy's final launch in amazing rocket cam footage

    by admin Added 28 Views / 0 Likes

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  • 00:30 Pan: So near, or so far?

    Pan: So near, or so far?

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    A field full of distant galaxies on a dark background. Most of the galaxies are very small, but there are a few larger galaxies and some stars where detail can be made out. In the very centre there is an elliptical galaxy with a brightly glowing core and

  • 01:30 Integrated Sierra Space Dream Chaser space plane unveiled at NASA facility

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    ISS astronauts toss football, mention Taylor Swift in Super Bowl prep on space station

    by admin Added 27 Views / 0 Likes

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    by admin Added 27 Views / 0 Likes

    it ain't the 1st time & won't be the last time.but it sure is interesting.imho.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews

  • 01:07 First pics! See Intuitive Machines' lander from orbit and surface of moon

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    by admin Added 27 Views / 0 Likes

    The Intuitive Machines' Nova-C "Odysseus" lander has delivered its first image from the surface of the moon. Also, see the NASA's Lunar Reconnaissance Orbiter view of the lander from moon orbit. Credit: Space.com | Intuitive Machines / NASA/GSFC/Arizona S

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    by admin Added 27 Views / 0 Likes

    and a Tornado just hit Grand Blanc Michigan as a record size wildfire burns across Texas. Stay safe.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews

  • 01:52 Meet Roscosmos Cosmonaut Alexander Grebenkin, Crew-8 Mission Specialist

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    by admin Added 27 Views / 0 Likes

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  • 02:28 Apply to be an Astronaut

    Apply to be an Astronaut

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    NASA is seeking a new generation of space explorers to journey beyond. Do you think you have what it takes to join NASA’s next astronaut class? Visit: https://www.NASA.gov/astronautsCredit: NASAProducer/Editor: Bryan KerstenProducer: Chelsey BallarteAudio

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    by admin Added 27 Views / 0 Likes

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