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)
-
01:44
Hot Young Stars Sculpt Beautiful Stellar Clouds | Video
Added 758 Views / 0 LikesThese hot young stars, which are much heavier and will have short lives, have painted the curious and whimsical clouds of gas and dust in this photo of star cluster NGC 3572. Credit: ESO
-
02:06
A Day In The Life Of A NASA Intern
Added 313 Views / 0 LikesThis video reveals the extraordinary ordinary life of a NASA Johnson Space Center intern! There is never a dull day with so many opportunities for exploration. Take a journey with one of our star interns— and who knows—one day you might make this journey
-
Ax-2 Mission Control Audio
Added 93 Views / 0 LikesThis is the vehicle trajectory and mission control audio without any additional commentary. There may be very long periods of silence. For our full hosted webcast, visit https://www.spacex.com/launches/
-
05:10
May 7th is now officially 'Be Extra Kind & Be Extra Cool' Day. Enjoy!
Added 631 Views / 0 LikesMay 7th is now officially 'Be Extra Kind & Be Extra Cool' Day. Enjoy!
-
01:30
Ingenuity survived in-flight anomaly on Mars | Flight 6 highlights
Added 193 Views / 0 LikesNASA's Ingenuity helicopter experienced an anomaly during its sixth flight on Mars on May 22, 2021 but landed safely. It "began adjusting its velocity and tilting back and forth in an oscillating pattern," after the first 150-meter leg of the flight, acco
-
01:25
Space Station robot 'dances' with new dust collector in epic installation time-lapse
Added 108 Views / 0 LikesThe International Space Station's Special Purpose Dexterous Manipulator (Dextre) was employed to install the Earth Surface Mineral Dust Source Investigation instrument outside the International Space Station. The choreographed maneuver is set to a waltz i
-
01:39
Explosion in Los Angeles. Multiple buildings on Fire. 10 Fire Fighters Injured.
Added 357 Views / 0 Likes2020 and the hits just keep on coming.God bless everyone,T
-
02:11
Mark Vande Hei will break longest single spaceflight record for an American
Added 173 Views / 0 LikesNASA astronaut Mark Vande Hei talks about the spaceflight record he will beat by the end of his International Space Station mission.Credit: NASA
-
02:10
Asteroid Threat: Cutting Through Red Tape To Save The World | Video
Added 675 Views / 0 LikesB612 Foundation CEO and fmr. NASA astronaut Ed Lu talks about why an infrared space telescope is needed to search for hundreds of thousands of undocumented near-Earth asteroids and why they are doing it privately. More here: http://goo.gl/CX5Sgd
-
08:21
90 Day Great World Disaster Period - Day 4 - Italian Biblical double Omens
Added 449 Views / 0 LikesYou may want to hold someone's hand when you watch this video because it is a real life scientific punch in the face you won't get on CNN FOX ABC NBC CBS or Yahoo! yo. We've got 85 more days to go in this Wild Wacky Weather period.God bless everyone,Thttp
-
01:08
China's Shenzhou 15 crew set to return to Earth
Added 86 Views / 0 LikesThe Shenzhou 15 taikonauts Fei Junlong (commander), Deng Qingming and Zhang Lu are set to return to Earth from the Tiangong space station on June 3, 2023 (June 4 - Beijing time). Live coverage is set to begin around 5:15pm ET: https://www.space.com/china-
-
01:57
Searching for Life on Jupiter’s Moon Europa
Added 602 Views / 0 LikesSearching for Life on Jupiter’s Moon Europa
-
01:26
Blastoff! Chinese rocket soars in nighttime weather satellite launch
Added 186 Views / 0 LikesA Chinese Long March-3B rocket launched the Fengyun-4B (FY-4B) satellite from the Xichang Satellite Launch Center in Sichuan Province on June 3, 2021. "FY-4B will be used in the fields of weather analysis and forecasting, as well as environmental and disa
-
50:11
Earth in 4K – Expedition 65 Edition
Added 82 Views / 0 LikesThe people who get to see the Earth from space marvel at its beauty, the colors, the fragility they feel about the planet 250 miles below them. Now it’s your turn: this ultra-high definition video, captured during the International Space Station’s Expedit
-
01:21
SpaceX spacesuits are a new breed
Added 339 Views / 0 LikesAstronauts launching to space aboard SpaceX's Crew Dragon spacecraft will be sporting a next-generation spacesuit. It is "designed to be functional, lightweight, and to offer protection from potential depressurization," according to NASA. Credit: Space.co
-
11:49
4.9 Los Angeles, California Earthquake, Pacific Northwest Atmospheric River & Mexico Volcano.
Added 202 Views / 0 Likeshope you are having a great weekend!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