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)
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01:06
How to photograph Comet NEOWISE - NASA tips
Added 301 Views / 0 LikesNASA Jet Propulsion Laboratory's Bill Dunford shares some tips on how to photograph Comet C/2020 F3 (NEOWISE). Credit: NASA
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00:23
Animation: The Bat Shadow’s “Flapping” Motion Explained
Added 283 Views / 0 LikesThis animation depicts how the “flapping” motion of the shadow of the star HBC 672 has been observed by the NASA/ESA Hubble Space Telescope.The star is believed to be surrounded by a warped, saddle-shaped disc with two peaks and two dips. A planet embedde
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00:08
The Bat Shadow's "Flapping"
Added 335 Views / 0 LikesThis video showcases the "flapping" motion of the shadow of the star HBC 672 that has been observed by a team of researchers using the NASA/ESA Hubble Space Telescope.The star is believed to be surrounded by a warped, saddle-shaped disc with two peaks and
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01:19
Zooming Into the Bat Shadow and its “Flapping”
Added 281 Views / 0 LikesThis video takes the viewer from the region around the Serpens Nebula to the young star HBC 672. This star is known by its nickname of Bat Shadow because of its wing-like shadow feature. The NASA/ESA Hubble Space Telescope has now observed a curious “flap
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02:00
How to see Comet NEOWISE and how big is it?
Added 322 Views / 0 LikesNASA explains how to see Comet C/2020 F3 (NEOWISE) in the night sky this month. They also talk about the comet's size and whether or not it is an interstellar object. -- How to see Comet NEOWISE in the night sky this month (https://www.space.com/comet-neo
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01:09
Engineered cartilage built on space station
Added 234 Views / 0 LikesA magnetic bioprinter was used to build engineered cartilage aboard the International Space Station. Credit: Space.com / footage courtesy: Vladislav Parfenov «3D Bioprinting Solutions» / produced & edited by Steve Spaleta (http://www.twitter.com/stevespal
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02:37
Four US spy satellites launched atop Minotaur IV rocket
Added 337 Views / 0 LikesA Northrop Grumman Minotaur IV rocket launched the National Reconnaissance Office NROL-129 mission's classified satellites from NASA's Wallops Flight Facility on Wallops Island, Virginia on July 15, 2020. -- Full Story: https://www.space.com/us-launches-f
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03:21
NASA helicopter 'Ingenuity' will be 'first aircraft on Mars'
Added 346 Views / 0 LikesNASA is sending a small helicopter called Ingenuity with the Perseverance rover to Mars. It will be the first aircraft to fly in Mars if all goes well. [NASA has built a helicopter to explore Mars and it's finally ready to launch](https://www.space.com/fi
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08:59
Solar Storm! Comet NEOwise! STEVE! Arctic Fires! Heat Wave! Severe Weather! China Floods! EQ Data!
Added 326 Views / 0 LikesTHANK YOU FOR BEING FANTASTIC!God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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03:51
Down to Earth – Reach for the Stars
Added 241 Views / 0 LikesIn celebration of the upcoming #SpaceStation20th anniversary, Spaceflight Participant Hazzaa Ali Almansoori from the United Arab Emirates, who recently flew in space with other International Astronauts, shares his thoughts on his journey to reach the star
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01:04
Comet NEOWISE seen by several spacecraft
Added 279 Views / 0 LikesComet C/2020 F3 (NEOWISE) has been captured by the ESA/NASA Solar and Heliospheric Observatory (SOHO), NASA’s Parker Solar Probe and Solar and Terrestrial Relations Observatory (STEREO). -- How to see Comet NEOWISE in the night sky this month: (https://ww
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01:02
Take a lap around Earth in new Space Station time-lapse
Added 290 Views / 0 LikesNew International Space Station (ISS) imagery, captured on July 12, 2020, has been compiled to show an orbit and a half of Earth. The ISS orbits our home planet in approximately 90 minutes. Imagery credit : Earth Science and Remote Sensing Unit, NASA/JSC
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01:54
NASA Mars 2020 'Perseverance' rover's mission explained
Added 357 Views / 0 LikesNASA's Mars rover Perseverance is scheduled to launch to the Red Planet in summer 2020. If all goes well, the rover is scheduled to touch down on the Mars impact basin Jezero Crater in Feb. 2021. Perseverance will hunt for signs of ancient life (https://w
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01:04
Fly over North American east coast at night in Space Station time-lapse
Added 271 Views / 0 LikesSee the International Space Station's view of the east coast of North America at night from the Gulf of Mexico to Nova Scotia. Imagery was captured in Dec. 28, 2019. Credit: Earth Science and Remote Sensing Unit, NASA/JSC / mash mix by Space.com's [Steve
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02:14
Ludicrous Speed? Galactic Smash-Up at Incredible Pace - Tour the Region
Added 289 Views / 0 LikesThe NGC 6338 is a pair of colliding galaxy groups located about 380 million light years from Earth. NASA Chandra X-ray Observatory and other observatories have been used to study the region. Credit: NASA/CXC/A. Hobart
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01:03
National Space Society's 'A Day in Space' - Virtual Event Trailer
Added 283 Views / 0 LikesJoin Buzz Aldrin, Dr. Shawna Pandya, Dr. Sara Seager, Dr. Alan Stern and more on July 16 for a "one-day virtual event that will take you on a journey that begins with the Space Race, explores the solar system, examines the science and technology of human
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07:09
July Heat Wave & 3 Days of Severe Weather & a look at Europe Weather
Added 331 Views / 0 LikesI LOVE YOU ASTEROID FIGHT CLUB!T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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12:43
SpaceX Demo-2 launch - Watch NASA astronaut's reaction aboard Space Station
Added 341 Views / 0 LikesNASA astronaut Chris Cassidy watched the launch of the Space Demo-2 mission from the International Space Station. Cassidy also had a lot of work to do preparing for their arrival. See highlights here. -- SpaceX's historic Demo-2 Crew Dragon astronaut test
