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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12:09
Next Artemis 1 moon rocket launch attempt - What's the status, weather?
Added 103 Views / 0 LikesNASA Artemis 1 mission managers give a status update on the launch attempt scheduled for Sept. 3, 2022. The backup opportunity for the launch is Sept. 5. Credit: NASA
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Next Big Thing: Genetic Data from Space Station
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Next Gen Falcon 9 | Demonstration Flight
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Next Mars Rover Will Have Helicopter Companion
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Next NASA Mars Rover - Construction Underway
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Next Two People on Moon 'Could Be Women,' NASA Chief Says
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Next-Generation Space Telescopes Could Look For Aliens | Video
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NFL Draft Message From Space | Video
Added 624 Views / 0 LikesNASA astronauts Steve Swanson and Rick Mastracchio kicked off the 2014 NFL draft with a message from the International Space Station.
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NGC 1316 - Zoom into 4th Brightest Radio Source in the Sky
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Nichelle 'Uhura' Nichols legacy honored by NASA
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Nilesat 301 Mission
Added 70 Views / 0 LikesSpaceX is targeting Wednesday, June 8 for launch of Nilesat 301 to a geosynchronous transfer orbit from Space Launch Complex 40 (SLC-40) at Cape Canaveral Space Force Station in Florida. The two-hour and twenty-nine-minute window opens at 5:04 p.m. ET, 21
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Nilesat 301 Mission Control Audio
Added 127 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/
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NIRSpec integral field units principle animation
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NIRSpec multi object spectrograph
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NJ NY NE Coastal Storm could be a 990 mb Hurricane says the new NAM
Added 300 Views / 0 LikesWorst Case Scenario: Category 3 Hurricane IMHO.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096HTTPS://WWW.PAYPAL.ME/THORNEWSwww.venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews