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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)

 

  • 00:33 Zoom video (Serpens Nebula)

    Zoom video (Serpens Nebula)

    by admin Added 30 Views / 0 Likes

    This zoom-in video shows the relative location of the Serpens Nebula on the sky. It begins with a ground-based photo by the late astrophotographer Akira Fujii, then transitions into a plate from the Digitized Sky Survey. Next, an image from NASA’s Spitzer

  • 01:09 Strawberry Moon shines in June 2024

    Strawberry Moon shines in June 2024

    by admin Added 27 Views / 0 Likes

    The full moon in June is known as the Strawberry Moon. Full moon calendar: https://www.space.com/16830-full-moon-calendar.htmlCredit: Space.com | animation courtesy: NASA/GSFC | edited by [Steve Spaleta](https://twitter.com/stevespaleta)

  • 01:07 Massive black hole has 'awakened' in galaxy SDSS1335+0728

    Massive black hole has 'awakened' in galaxy SDSS1335+0728

    by admin Added 35 Views / 0 Likes

    Very Large Telescope observations of the galaxy revealed that there was likely a “sudden awakening of the massive black hole at its core,” according to the European Southern Observatory (ESO).Credit: Space.com | ESO/L. Calçada, M. Kornmesser, N. Risinger

  • 02:31 U.S. Space Force Mission and Focus Explained by Guardians

    U.S. Space Force Mission and Focus Explained by Guardians

    by admin Added 28 Views / 0 Likes

    Dive into the heart of the United States Space Force (USSF) with an exclusive conversation between Lt. Col. Katherine "KC" Hebner and Major Julius "Shaq" Lee as they unravel the fabric of life within the USSF. Watch as these Guardians share their military

  • 01:21 Astronomers find most distant merging quasars yet

    Astronomers find most distant merging quasars yet

    by admin Added 29 Views / 0 Likes

    The Gemini North telescope and Subaru Telescope have been used to discover most distant merging quasars yet, "seen over 900 million years after the Big Bang." according to NoirLab. Credit:Images and Videos: International Gemini Observatory/NOIRLab/NSF/AUR

  • 02:58 RED ALERT! Huge New Mexico Wildfire! 3 Tropical Areas to Watch! New Vegas Monolith Dropped!

    RED ALERT! Huge New Mexico Wildfire! 3 Tropical Areas to Watch! New Vegas Monolith Dropped!

    by admin Added 35 Views / 0 Likes

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  • 07:42 RED ALERT! 1st Tropical Storm watch of the Year for Texas & Mexico from PTC #1! +Winter Storms USA?

    RED ALERT! 1st Tropical Storm watch of the Year for Texas & Mexico from PTC #1! +Winter Storms USA?

    by admin Added 27 Views / 0 Likes

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  • 02:22 Space Force Guardians Discuss the Future of USSF

    Space Force Guardians Discuss the Future of USSF

    by admin Added 37 Views / 0 Likes

    In this exclusive conversation between two Space Force Guardians, Spc-3 Amilya Talbot and Spc-3 Ana Chavez discuss the purpose behind the U.S. Space Force and where it's headed. Explore the dynamic nature of the USSF, where operational roles merge seamles

  • 01:07 James Webb Space Telescope's stunning view of the Crab Nebula - See in 4K

    James Webb Space Telescope's stunning view of the Crab Nebula - See in 4K

    by admin Added 28 Views / 0 Likes

    The James Webb Space Telescope's NIRCam (Near-Infrared Camera) and MIRI (Mid-Infrared Instrument) captured an amazing view of the Crab Nebula. Credit: NASA, ESA, CSA, STScI, T. Temim (Princeton University) | edited by Space.com's [Steve Spaleta](https://t

  • 00:30 Pan of the Crab Nebula (MIRI and NIRCam image)

    Pan of the Crab Nebula (MIRI and NIRCam image)

    by admin Added 29 Views / 0 Likes

    The NASA/ESA/CSA James Webb Space Telescope dissected the Crab Nebula’s structure, aiding astronomers as they continue to evaluate leading theories about the supernova remnant’s origins. With the data collected by Webb’s NIRCam (Near-Infrared Camera) and

  • 00:30 Pan: RCW 7

    Pan: RCW 7

    by admin Added 22 Views / 0 Likes

    A visually striking collection of interstellar gas and dust is the focus of this week's Hubble Picture of the Week. Named RCW 7, the nebula is located just over 5300 light-years from Earth in the constellation Puppis.Nebulae are areas of space that are ri

  • 00:30 Pan: NGC 3059

    Pan: NGC 3059

    by admin Added 20 Views / 0 Likes

    This Picture of the Week features the barred spiral galaxy NGC 3059, which lies about 57 million light-years from Earth. The data used to compose this image were collected by Hubble in May 2024, as part of an observing programme that studied a number of g

  • 00:30 Pan: NGC 2005

    Pan: NGC 2005

    by admin Added 24 Views / 0 Likes

    The globular cluster NGC 2005, featured in this Hubble Picture of the Week, is not unusual in and of itself; but it is a peculiarity in relation to its surroundings. NGC 2005 is located about 750 light-years from the heart of the Large Magellanic Cloud (L

  • 01:07 Boeing Staliner flies over auroras while docked to space station in amazing time-lapse

    Boeing Staliner flies over auroras while docked to space station in amazing time-lapse

    by admin Added 23 Views / 0 Likes

    NASA astronaut Matthew Dominick captured an amazing view of the Boeing Starliner and auroras from the SpaceX Dragon spacecraft. Credit: Space.com | footage courtesy: NASA | edited by [Steve Spaleta](https://twitter.com/stevespaleta)

  • 01:09 See SpaceX Starship liftoff in amazing launch tower view

    See SpaceX Starship liftoff in amazing launch tower view

    by admin Added 19 Views / 0 Likes

    SpaceX Starship launch on its 4th test flight on June 6, 2024 from Starbase in Texas. See the view from launch tower and more. Credit: Space.com | footage courtesy: SpaceX | edited by [Steve Spaleta](https://twitter.com/stevespaleta)

  • 13:15 RED ALERT! Big Texas Flood coming & Double Trouble TS / Hurricane Watch! + more tornadoes usa

    RED ALERT! Big Texas Flood coming & Double Trouble TS / Hurricane Watch! + more tornadoes usa

    by admin Added 34 Views / 0 Likes

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  • 05:10 RED ALERT! Double Hurricane* Trouble? Asteroid 2024 Lesbian Zen 4 to pass .7 LD from Earth today!

    RED ALERT! Double Hurricane* Trouble? Asteroid 2024 Lesbian Zen 4 to pass .7 LD from Earth today!

    by admin Added 30 Views / 0 Likes

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  • 04:53 RED ALERT! Tornado Watch & TWO Hurricane* Warnings! & the coming TEXAS & LA MS AL FLOOD.

    RED ALERT! Tornado Watch & TWO Hurricane* Warnings! & the coming TEXAS & LA MS AL FLOOD.

    by admin Added 33 Views / 0 Likes

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  • 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 admin Added 21 Views / 0 Likes

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  • 02:48 Stars being scouted for ideal habitable zone conditions by Chandra X-ray Telecope

    Stars being scouted for ideal habitable zone conditions by Chandra X-ray Telecope

    by admin Added 21 Views / 0 Likes

    The Chandra X-ray telescope and other observatories are being used to study stars that could potentially harbor habitable planets. Future observatories will use the data to narrow down the list for possible Earth-like planets to image. Credit: NASA/CXC/A.

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