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)
-
00:30
Hubble and Webb's Views of NGC 3256
Added 85 Views / 0 LikesThe peculiar galaxy NGC 3256 takes centre stage in the two images featured in this video. This distorted galaxy is the wreckage of a head-on collision between two spiral galaxies which likely occurred 500 million years ago, and it is studded with clumps o
-
01:33
5 Planets In RetroGrade Station* : It's going to get Weird. - THORnews Update
Added 539 Views / 0 Likes5 Planets In RetroGrade Station* : It's going to get Weird. - THORnews Update
-
08:49
Volcano erupts in the Congo! Sun fires off a bunch of flares & CMEs! Severe Weather! Crypto trouble!
Added 199 Views / 0 Likesit's going to be a wild week.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnews$THORnews on CashApphttps://www.patreon.com/thornews
-
00:29
Amazing Video Of Passing Space Station Lit By Green Laser
Added 640 Views / 0 LikesAmazing Video Of Passing Space Station Lit By Green Laser
-
00:31
Near Miss! SpaceX's 'Mr. Steven' Almost Catches Fairing in Test
Added 356 Views / 0 LikesSpaceX 'Mr. Steven' ship nearly missed catching the fairing during a recent test. Credit: SpaceX
-
05:19
Nov. 2017 Skywatching - Planets, Constellations and Leonid Meteors
Added 570 Views / 0 LikesNov. 2017 Skywatching - Planets, Constellations and Leonid Meteors
-
02:56
Touchdown! Record-breaking NASA astronaut, 2 cosmonauts land in Kazakhstan
Added 143 Views / 0 LikesA Soyuz spacecraft carrying NASA's Mark Vande Hei and Russian cosmonauts Anton Shkaplerov and Pyotr Dubrov landed in Kazakhstan on March 30, 2022. Vande Hei spent 355 consecutive days in space, a record for an American astronaut. Credit: NASA
-
01:17
CEERS1
Added 75 Views / 0 LikesMore information and download options: http://esawebb.org/videos/CEERS1/Credit:NASA & ESA
-
07:13
Space Station Live: Green Chemistry for the Red Planet
Added 525 Views / 0 LikesSpace Station Live: Green Chemistry for the Red Planet
-
16:27
Hurricane Season Watch 2021: we could see a hurricane or TS landfall around June 14 imho
Added 172 Views / 0 Likesthis is not a forecast, just my opinion.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnews$THORnews on CashApphttps://www.patreon.com/thornews
-
02:20
Astronaut Cady Coleman's Space Station Cupola Tour
Added 757 Views / 0 LikesAstronaut Cady Coleman's Space Station Cupola Tour
-
01:23
Last 5 Years Hottest on Record, 2018 Ranks 4th
Added 295 Views / 0 Likes2018 is officially the 4th hottest year on record according to data collected by NASA and NOAA. Credit: NASA/GSFC
-
03:06
NASA gets retro with 'worm' logo on SpaceX Demo-2 rocket
Added 308 Views / 0 LikesThe designers of the NASA worm, Richard Danne and Bruce Blackburn, reflect on the creating the famous logo that was retired in 1992 and is now making a comeback with the SpaceX Demo-2 flight. -- NASA's famous 'worm' logo crawls back into action on SpaceX
-
07:49
Multiple Storms on the Way to USA & Canada & Europe through 12-5-2017
Added 499 Views / 0 LikesMultiple Storms on the Way to USA & Canada & Europe through 12-5-2017
-
52:56
Hispasat Amazonas Nexus Mission
Added 77 Views / 0 LikesOn Monday, February 6 at 8:32 p.m. ET, SpaceX launched the Hispasat Amazonas Nexus mission from Space Launch Complex 40 (SLC-40) at Cape Canaveral Space Force Station in Florida. This was the sixth launch and landing for this Falcon 9 first stage booster,
-
10:20
Keeping Cool in Space
Added 114 Views / 0 LikesImagine you are an Astronaut on the Moon. Your job for the next eight hours will be exploring, collecting science samples, traversing up and down lunar hills, sampling rocks, and setting up equipment as part of the Artemis program. Temperatures on the lun
-
02:07
SpaceX aborts Starlink launch at T-5 seconds left in countdown
Added 84 Views / 0 LikesSpaceX aborted the Falcon 9 launch of 15 Starlink satellites from California's Vandenberg Space Force Base on July 19, 2023. Full Story: https://www.space.com/spacex-starlink-launch-abort-july-19-2023Credit: SpaceX
-
02:55
SpaceX Makes It Three In A Row - Lands First Stage On Droneship | Video
Added 579 Views / 0 LikesSpaceX Makes It Three In A Row - Lands First Stage On Droneship | Video