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)
02:39Added 224 Views / 0 Likes
Video of Falcon 9 Reusable (F9R) taking its second test flight at our rocket development facility. F9R quadrupled its height from its previous test to rise to 1,000m. Early flights of F9R will take off with legs fixed in the down position. However, we wil
06:29Added 450 Views / 0 Likes
Big Storm Coming! Incoming Multi-State Dynamic Weather Event.
7:56:24Added 86 Views / 0 Likes
Crew Demo-2 Departure - https://youtu.be/sl2jo1bSxl8Crew Demo-2 Return Coast Phase - https://youtu.be/zMsxviPT2CwCrew Demo-2 Splashdown - Watching NowOn Saturday, May 30, SpaceX’s Falcon 9 launched Crew Dragon’s second demonstration (Demo-2) mission from
04:19Added 379 Views / 0 Likes
The constellation of 4 European Space Agency 'Galileo' satellites, that will provide highly accurate global positioning to Europe, has passed its validation phase. The entire system will be 30 satellites - completion expected by 2019.
01:47Added 81 Views / 0 Likes
NASA's Transiting Exoplanet Survey Satellite (TESS) observed ASASSN-19bt "as soon as it started to brighten," according to space agency's Goddard Space Flight Center. Story: [Gargantuan Black Hole Shreds Star in Rare Cosmic Find: https://www.space.com/sta
02:27Added 108 Views / 0 Likes
NASA's Space to Ground is your weekly update on what's happening aboard the International Space Station. Got a question or comment? Use #spacetoground to talk to us.Learn more about the important research being operated on Station:https://www.nasa.gov/iss
1:20:32Added 175 Views / 0 Likes
SpaceX’s customer for this mission is Thales Alenia Space. With this flight, the Falcon 9 rocket will deliver the TurkmenÄlem52E/MonacoSat satellite to a geosynchronous transfer orbit. The Thales launch window is targeted to open at approximately 6:14pm E
05:37Added 430 Views / 0 Likes
"Le Voyage" - A CineSpace 2015 Film
02:51Added 43 Views / 0 Likes
NASA's Space to Ground is your weekly update on what's happening aboard the International Space Station. Got a question or comment? Use #AskNASA to talk to us.Learn more about the important research being operated on Station:https://www.nasa.gov/iss-scien
01:20Added 465 Views / 0 Likes
NASA's Solar Dynamics Observatory (SDO) captured the M9.3-class flare on March 12, 2014. SDO cameras capture imagery at many wavelengths to study solar material and processes that are not visible to the human eye.
01:36Added 85 Views / 0 Likes
NASA's Mars Insight's seismometer detects "seismic signals, including some produced by the spacecraft itself," according to the space agency's Jet Propulsion Laboratory. Story: 'Dinks and Donks' and Marsquakes: Hear Weird Red Planet Sounds from a NASA Lan
02:35Added 115 Views / 0 Likes
The upgrades to the Hubble Space Telescope completed during Service Mission 4 (SM4) in 2009 made it “more powerful than ever before,” according to NASA’s Goddard Space Flight Center. Learn more about the challenging mission in this highlight reel. -- Savi
43:10Added 230 Views / 0 Likes
When Falcon Heavy lifts off, it will be the most powerful operational rocket in the world by a factor of two. With the ability to lift into orbit nearly 64 metric tons (141,000 lb)---a mass greater than a 737 jetliner loaded with passengers, crew, luggage
01:17Added 435 Views / 0 Likes
What Are Dwarf Planet Ceres’ Bright Spots? Data Animation
05:27Added 62 Views / 0 Likes
Videos featured: Perseid meteors seen by NASA cameras, dwarf planet Ceres has a deep salty water reservoir, NASA's OSIRIS-REx mission makes final sampling rehearsal at asteroid Bennu, giant outburst may be behind Betelgeuse dimming, and ESO zooms into a "
01:55Added 435 Views / 0 Likes
The pulsar jet, called IGR J1104-6103, is traveling between 2.5-5 million MPH, making it one of the fastest moving pulsars ever observed. It began its journey from the center of supernova remnant SNR MSH 11-61A in the Milky Way galaxy, it's believed.
01:06Added 75 Views / 0 Likes
A new study has revealed that the Andromeda Galaxy consumed a pair of galaxies in the last 10 billion years. Story: Andromeda Galaxy Has Been Devouring Other Galaxies Since It Was a Baby https://www.space.com/andromeda-galaxy-cannibal.htmlCredit: The Univ
01:03Added 111 Views / 0 Likes
At a congressional hearing, Dr. Katie Bouman, who was part of the team that captured the first image of a black hole, speaks about a 4-year-old coming up to her to talk about the photo. -- The Scientists Behind the First Black Hole Photo Get Nod from Cong
01:07Added 242 Views / 0 Likes
03:21Added 455 Views / 0 Likes
What's Behind Rocker Grace Potter's Space Fashion? | Video