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)
02:15Added 467 Views / 0 Likes
Why Is 'Our' Supermassive Black Hole Spitting X-rays?| Video
01:24Added 330 Views / 0 Likes
Why is a Total Solar Eclipse Such a Big Deal?
06:08Added 254 Views / 0 Likes
Why Is Hubble Taking Pictures Of Mars? - Exclusive Interview | Video
01:58Added 206 Views / 0 Likes
Visit: http://www.spacex.com/ for more information on SpaceX, Dragon, Falcon 9, Falcon Heavy, reusable rockets, grasshopper, Mars, upcoming rocket launch, or Elon Musk. SpaceX CEO & Chief Designer Elon Musk discusses the difficulty of making a reusable ro
04:30Added 404 Views / 0 Likes
Set to launch on Nov 18th, 2013, the orbiter seek to rewind the planet's geologic history back to the wet, warm epoch that might have spawned life. MAVEN's instruments may help scientists understand why the planet lost much of its atmosphere.
09:59Added 396 Views / 0 Likes
The Kennedy Space Center's Director (and former astronaut) shares his memories of building the International Space Station with SPACE.com's @MiriKramer and talks about its accomplishments.
01:43Added 297 Views / 0 Likes
Why Is This Dwarf Galaxy So Clean Of Cosmic Soot? | Video
10:18Added 437 Views / 0 Likes
SPACE.com's @MiriKramer speaks with Dr. James Garvin about key unsolved questions and how NASA's MAVEN will search the Martian atmosphere for answers.
02:37Added 284 Views / 0 Likes
Why Kill Cassini? Saturn Probe Will Die To Protect Moons [film clip]
01:36Added 194 Views / 0 Likes
Visit: http://www.spacex.com/ for more information on SpaceX, Dragon, Falcon 9, Falcon Heavy, reusable rockets, grasshopper, Mars, upcoming rocket launch, or Elon Musk. SpaceX CEO & Chief Designer Elon Musk discusses the importance of making rockets reusa
04:58Added 311 Views / 0 Likes
Why President Trump & the Americas cannot build "The Wall".
06:08Added 384 Views / 0 Likes
Science is under siege, despite society's deep dependence on its byproducts. 'COSMOS -- A Spacetime Odyssey's presenter and co-writer explain how they're fighting back, using cinematic arts, to SPACE.com's @DavidSkyBrody at New York Comic Con 2013.
00:48Added 272 Views / 0 Likes
Why Solar Eclipses Don’t Happen Every Month - Orbit Animation Explains
01:09Added 357 Views / 0 Likes
Why SpaceX Didn't Stick The Landing – But Soon Will | Video
01:41Added 413 Views / 0 Likes
NASA planetary scientist Dr.Shawn Domagal-Goldman explains why this phenomenon occurs and also why Earth will experience a tetrad or 4 lunar eclipses in nearly 18 months. Total Lunar Eclipse Skywatching Guide: http://goo.gl/TjZIzU
01:20Added 257 Views / 0 Likes
Why Try Science in Microgravity
00:43Added 346 Views / 0 Likes
Why would astronauts need a rover on Mars?
09:42Added 323 Views / 0 Likes
Wild & Crazy Storms USA & Canada & South America
16:07Added 70 Views / 0 Likes
you are an adult. watch this shit at your own risk.God Bless Everyone,Thttps://www.paypal.me/THORnews@newTHOR on twitterhttps://www.facebook.com/thornewsgoTshirtshttps://hitthebuttonbaby.com/the crankywxguy bloghttp://www.stormhamster.com/entry/e010519.ht
05:18Added 53 Views / 0 Likes
what a day. and it ain;t even over yet.God bless everyone,T LEWISON 5430 BIRDWOOD RD. #416 HOUSTON TEXAS 77096 WWW.PAYPAL.ME/THORNEWS www.venmo.com/TEric-Lewison $THORnews on CashApp https://www.patreon.com/thornewscheck out the crankywxguy bloghttp://www