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)
00:49Added 520 Views / 2 Likes
Neutron star merger animation ending with kilonova explosion
00:50Added 586 Views / 2 Likes
Zoom-in on the Orion Nebula
03:19Added 311 Views / 2 Likes
Oroville Dam Video Update of Main & Emergency Spillway 2-18-2017
01:34Added 368 Views / 2 Likes
Historic Liftoffs From Pad 39A - From Apollo to SpaceX | Video
05:27Added 197 Views / 2 Likes
Nailed it. God bless Everyone,Thttps://www.paypal.me/THORnews@newTHOR on twitterhttps://www.facebook.com/thornewsgoTshirtshttps://hitthebuttonbaby.com/
01:28Added 463 Views / 1 Likes
Gravitational Waves Simply Explained With A Cube And Marble | Video
15:03Added 332 Views / 1 Likes
Will Comet Nibiru Planet X hit Earth & destroy Mankind on September 23 2016 ?!??
04:34Added 273 Views / 1 Likes
Most Underrated Place to Go in Our Solar System - 'Travel Agents' Explain
01:02Added 348 Views / 1 Likes
Animation: Black Hole Merger That Created 4th Gravitational Waves Detection
03:47Added 264 Views / 1 Likes
NASA Launches Supersonic Parachute Test on Sounding Rocket
01:08Added 169 Views / 1 Likes
Missile Intercept Test Video Released By DOD
08:26Added 87 Views / 1 Likes
This storm could end with an instant freeze surprise. please stay aware and be prepared.God bless everyone,Thttps://www.paypal.me/THORnews@newTHOR on twitterhttps://www.facebook.com/thornewsgoTshirtshttps://hitthebuttonbaby.com/the crankywxguy bloghttp://
02:13Added 378 Views / 1 Likes
Touchdown! SpaceX 1st Stage Lands After Launch From Apollo-Era Pad | Video
02:33Added 345 Views / 1 Likes
Jupiter At Opposition - Hubble Snaps New Views of Gas Giant | Video
14:07Added 304 Views / 1 Likes
Tropical Storm Cindy Update: 15+ inches of rain possible for Gulf Coast
08:33Added 312 Views / 1 Likes
200+ mph Wind Speeds possible w Cat 5 Hurricane Irma - Texas to Florida to East Coast be on Alert!
01:38Added 417 Views / 1 Likes
Unusually Bright, Fast Aurora Surprises Observers | Video
03:13Added 452 Views / 1 Likes
MarsCrew134's crew scientist Vibha Srivastava describes extracting hydrogen fuel from soil sampled outside a simulated Mars habitat in Utah, a process called "in-situ resource utilization."
09:16Added 323 Views / 1 Likes
MAJOR Storms to bring Floods & Wind Damage to USA through Weekend
01:00Added 263 Views / 1 Likes
Solar Eclipse 'Diamond Ring' Above Oregon