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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03:20
Find Apollo 11 Landing Site While Skywatching The Moon
Added 486 Views / 0 LikesFor the 50th anniversary of humanity's first steps on the lunar surface, learn 5 facts about our moon and where to find the Apollo 11 landing site while viewing it in the night sky. -- Apollo 11 Moon Landing Site Seen in Unprecedented Detail: https://www.
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09:11
Blastoff! SpaceX launches 23 Starlink satellites, nails landing - 2025's 11th Falcon 9 mission
Added 23 Views / 0 LikesA SpaceX Falcon 9 rocket launched 23 Starlink satellites from Vandenberg Space Force Base on Jan. 24, 2025 at 9:07 a.m. EST (1407 GMT; 6:07 a.m. local time). Full Story: https://www.space.com/space-exploration/launches-spacecraft/spacex-launches-23-starli
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Post-Flight News Conference for ISS Expedition 69 Flight Engineer Frank Rubio of NASA
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00:30
Investigating A Made-to-Measure Galaxy
Added 140 Views / 0 LikesMore information and download options: http://esahubble.org/videos/potw2245a/Credit:ESA/Hubble & NASA, D. Jones Acknowledgement: G. Anand, L. Shatz Music: Stellardrone - Billions and Billions
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01:11
Hubble Galactic Family Photo Captures Distant Kissing Cousins | Video
Added 746 Views / 0 LikesThis 14-hour exposure surfaces a wide range of galaxy types halfway across space-time to the beginning of the universe. Some are colliding and combining. The image depicts energy at visible and infrared wavelengths.
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03:04
Preparing America for Deep Space Episode 17: Building the Future
Added 506 Views / 0 LikesImportant strides have been made in 2018 for NASA’s Orion, Space Launch System (SLS) and Exploration Ground Systems (EGS) programs. Teams across America and in Europe are developing and building the spacecraft, rocket and infrastructure necessary to send
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07:08
Tropical Storm Arthur & the Atmospheric Defense Team. Typhoon Amphan & new Sunspot + USA Flooding
Added 400 Views / 0 Likesit looks like Arthur is going to be kicked like a football out to sea.hope hope. Amphan is a big danger to india. and the USA will flood in some spots this week.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THO
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11:32
Red Alert! Major Storm Wednesday & Multiple days of Severe Weather! Multiple M-Class Solar Flares!
Added 290 Views / 0 Likesonly 6 more hours until jupiter enters pisces.(ps, i am sorry i am still having audio issues)God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.
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05:10
May 7th is now officially 'Be Extra Kind & Be Extra Cool' Day. Enjoy!
Added 707 Views / 0 LikesMay 7th is now officially 'Be Extra Kind & Be Extra Cool' Day. Enjoy!
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Watch live! Blue Origin New Shepard launches to simulate moon gravity and more
Added 32 Views / 0 LikesBlue Origin is now targeting Tuesday (Feb. 4) for its first-ever moon-gravity mission. The company first tried to launch the NS-29 mission of its New Shepard suborbital vehicle on Jan. 28, but called off that try due to uncooperative weather and an issue
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01:02
Asteroid 2023 TV3 to give Earth a close shave, closer than moon!
Added 132 Views / 0 LikesAsteroid 2023 TV3 will fly about 51,000 miles away (~82,000 km) from Earth on Oct. 12, 2023, It is estimated to be about 10.6 meters wide (35 feet). Credit: Space.com | orbit animation: NASA/JPL-Caltech | edited by Steve Spaleta (https://twitter.com/steve
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03:25
Cosmic Jailbreak! Blazar's Gamma Rays Make It To Detectors Unscathed | Video
Added 777 Views / 0 LikesCosmic Jailbreak! Blazar's Gamma Rays Make It To Detectors Unscathed | Video
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Fueling the Artemis 1 Rocket
Added 153 Views / 0 LikesOur Editor Brett Tingley is getting a reporter's view of the Artemis 1 rocket fueling live from Kennedy Space Center!
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00:56
Do We Need More 'Cosmos'? Neil deGrasse Tyson Answers | Raw Video
Added 860 Views / 0 Likes"You shouldn't have to be reminded that the World is worth protecting", the host of the Cosmos: A Spacetime Odyssey tells Space.com's @TariqJMalik at the series finale premiere in NYC.
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02:46
Red Red Red Alert! Stay Cool & Play Defense.
Added 386 Views / 0 Likesthis is asteroid fight club information.God bless everyone,T
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05:10
Bitcoin drops into the $43k range & will probably see trouble until March 2023.
Added 220 Views / 0 Likesmy crypto calls have been VERY solid, yo.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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25:05
HARD TRUTH - Planet X, Edgar Cayce Future Maps, Strategic Flooding & the Sunbaby
Added 793 Views / 0 LikesHARD TRUTH - Planet X, Edgar Cayce Future Maps, Strategic Flooding & the Sunbaby