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)
01:17 NewAdded 2 Views / 0 Likes
Insterstellar Asteroid's Look is Very Unique
01:20 NewAdded 3 Views / 0 Likes
Unusual Looking Interstellar Object's Flight Through Our Solar System - Animation
06:13 NewAdded 3 Views / 0 Likes
Search for Alien Life - Decades of Earth Observations a Key
05:04 NewAdded 3 Views / 0 Likes
JPSS-1 Weather Satellite Launches Atop Delta II Rocket
01:51 NewAdded 3 Views / 0 Likes
Expedition 53's Thanksgiving Memories
27:39 NewAdded 5 Views / 0 Likes
THORnews 5 yr Heart to Heart: #1 Puerto Rico, the Mental State of the USA & bad Endgames.
07:47 NewAdded 6 Views / 0 Likes
Tsunami Threat for Australia after 7.3 Earthquake in New Caledonia
07:49 NewAdded 9 Views / 0 Likes
Multiple Storms on the Way to USA & Canada & Europe through 12-5-2017
01:25 NewAdded 7 Views / 0 Likes
Europe & USA Weather - Hey, Sugar Britchez, How would you like your Warning?
08:27 NewAdded 6 Views / 0 Likes
Unique Binary Comet & Asteroid has been discovered in our Solar System
00:58 NewAdded 5 Views / 0 Likes
What Do Solar Flares Do to Earth?
02:31 NewAdded 3 Views / 0 Likes
Space to Ground:: Stuffed with Science: 11/17/2017
07:50 NewAdded 6 Views / 0 Likes
Weird Weather Watch: Medicane + West Coast getting Pounded & East Coast Storm
01:02 NewAdded 5 Views / 0 Likes
Fireball from Space! Fast-Moving Meteor Captured by Astronaut
01:28 NewAdded 7 Views / 0 Likes
Possible Earth-Like Planet Discovered Orbiting Inactive Star
01:25 NewAdded 14 Views / 0 Likes
Possible Earth-Like Planet Ross 128 B - How Far Away is It?
07:58Added 8 Views / 0 Likes
Cygnus Spacecraft Docks To International Space Station
03:03Added 7 Views / 0 Likes
In an alternate dimension THOR & Taylor Swift save the Universe
02:38Added 8 Views / 0 Likes
Dream Chaser Space Plane Lands After Successful Free Flight Test
02:13Added 6 Views / 0 Likes
Usually Invisible Weather Patterns Brought to Light by Tracking Aerosols from Space