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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01:08
Hotfire! NASA tests 3D-printed RAMFIRE rocket engine nozzle
Added 62 Views / 0 LikesNASA's Reactive Additive Manufacturing for the Fourth Industrial Revolution (RAMFIRE) project test-fired a 3D-printed engine nozzle at Marshall Space Flight Center in Alabama. See the test in real-time and slow motion here. Credit: NASA Marshall Space Fli
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10:29
Hotfire! NASA tests Artemis moon rocket engine at Stennis Space Center
Added 41 Views / 0 LikesA Space Launch System rocket RS-25 core stage engine was test-fired at NASA's Stennis Space Center on March 6, 2024. Credit: NASA's Stennis Space Center
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08:42
Hotfire! NASA tests Artemis moon rocket engine for 2nd time in 2024
Added 39 Views / 0 LikesNASA tested a Space Launch System rocket RS-25 engine at the Stennis Space Center on Jan. 23, 2024. Credit: NASA Stennis Space Center
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00:47
Hotfire! Orion capsule launch abort motor passes final test
Added 356 Views / 0 LikesThe attitude control motor (ACM) for NASA's Orion capsule's launch abort system passed it final test. -- Orion Capsule's Launch-Abort System: How It Works: https://www.space.com/nasa-orion-launch-abort-system-explainer.htmlCredit: NASA Johnson Space Cente
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11:20
Hotfire! See an Artemis moon rocket engine gimbal in latest test
Added 56 Views / 0 LikesA Space Launch System rocket RS-25 engine was test fired at Stennis Space Center on Nov. 29, 2023. It was the "third hot fire in a critical 12-test certification series," and engine gimbaling was evaluated, according to NASA. Credit: NASA Stennis Space Ce
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00:47
Hotfire! SpaceX Crew Dragon Launch Escape System Test
Added 335 Views / 0 LikesSee a test fire of the SpaceX Crew Dragon's upgraded launch escape system. -- SpaceX May Launch Crucial Crew Dragon Abort Test Next Month, Elon Musk Says: https://www.space.com/spacex-crew-dragon-abort-test-2019-elon-musk.htmlCredit: SpaceX / mash mix: Sp
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08:57
Hottest year on record! 2023 was Earth’s warmest since 1880
Added 36 Views / 0 Likes2023 has set the record for 'Earth’s warmest year since 1880,' according to NASA's Goddard Space Flight Center. Learn more about why that matters here. Credit; NASA's Goddard Space Flight Center
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05:14
HOUR 294 GFS MADNESS! Model has Category 1 hitting NY May 21st! For entertainment purposes only!
Added 289 Views / 0 LikesWe are watching the middle of May like a super hawk,This is more info for our data set.I still have faith in the Atmospheric Defense teambut we should not let our guard down.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.
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03:26
House Intelligence Committee holds "UFO" hearing - Congressman's opening statement
Added 127 Views / 0 LikesHouse Intelligence Counterterrorism, Counterintelligence, and Counterproliferation Subcommittee chair Congressman André Carson (D-Ind.) delivers an opening statement at a hearing on Unidentified Aerial Phenomena (UAP). -- Watch Now: https://www.space.com/
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04:43
House wants to use Martial Law power to Avoid Government Shutdown
Added 621 Views / 0 LikesHouse wants to use Martial Law power to Avoid Government Shutdown
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01:04
House-size asteroid to zip by closer than the moon - See an orbit animation
Added 38 Views / 0 LikesAsteroid 2024 DW will fly about 139,000 miles (224,000 km) away from Earth on Feb. 22, 2024. The space rock is estimated to be about 43 feet wide (13 m). Credit: Space.com | animation: NASA/JPL-Caltech | edited by [Steve Spaleta](https://twitter.com/steve
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01:04
House-size asteroid zips between Earth and moon in orbit animation
Added 189 Views / 0 LikesAsteroid 2022 FB2 flew about 93,000 miles away from Earth on March 28, 2022. It is approximately 49 feet wide (15 meters) according to NASA.Credit: Space.com | orbit animation: NASA/JPL-Caltech | produced & edited by [Steve Spaleta](http://www.twitter.com
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01:06
House-Sized Asteroid Nicknamed ‘Rerun’ To Buzz Earth | Orbit Animation
Added 587 Views / 0 LikesHouse-Sized Asteroid Nicknamed ‘Rerun’ To Buzz Earth | Orbit Animation
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00:55
House-Sized Asteroid to Give Earth Close Shave - Orbit Animation
Added 374 Views / 0 LikesAsteroid 2019 GC6 closest approach to Earth will be about ~136,000 miles away (218,870 km) on April 18, 2019. Credit: NASA / JPL-Caltech
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09:18
Houston & Galveston! Category 4 Hurricane Laura is supposed 2 hit TX/LA border but BE ON SUPER ALERT
Added 239 Views / 0 LikesI hate the Hurricane turn. I am bad at the Hurricane turn.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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11:04
Houston & SE Texas under Tornado Watch until 4am & Puerto Rico Earthquakes persist
Added 370 Views / 0 LikesGod bless everyone.T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096WWW.PAYPAL.ME/THORNEWS www.venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornewsty susan nancycheck out the crankywxguy bloghttp://www.stormhamster.com/entry2/e0109
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05:15
Houston Galveston & Texas City. DO NOT LET YOUR GUARD DOWN. Hurricane Laura surprises still possible
Added 360 Views / 0 LikesDear fellow Houstonites & our neighbors,We are not 100% out of danger and out the woods yet, y'all.This monster still has 30 hours to landfall.surprises are still possible.Have a plan, stay aware & pray.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HO