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)
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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.________________________________________FOLLOW THE SPACE STATION!Twitter: https://twitter.
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On March 16, 1966, the crewed Gemini 8 spacecraft became the first to dock with another spacecraft in space. NASA astronauts Neil Armstrong and David Scott launched into orbit in their Gemini spacecraft almost three hours after the uncrewed Agena target v
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Stephen William Hawking left an indelible impression on planet Earth and our understanding of the Universe around it. Credit: Space.com / produced and edited by Steve Spaleta
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The International Space Station has been humanity’s outpost in space for nearly two decades, hosting astronauts from around the globe working on groundbreaking science to push the boundaries in a variety of fields. NASA astronaut Randy Bresnik sought to c
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Nor'Easter #3 in this March Nor'Easter Parade of 2018 is turning out to be Nasty. The West Coast including Washington, Oregon & California will get hit with wave after wave of rain and we've already got our sights set on the next Nor'Easter.God bless ever
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The Hubble Space Telescope was used to capture galaxy NGC 1227, 240 million light-years from Earth. "The very rare and odd assemblage of stars (in the galaxy) has remained essentially unchanged for the past 10 billion years," according to the Hubble Space
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On March 13, 1781, Sir William Herschel discovered Uranus, the seventh planet from the sun. Before Herschel discovered Uranus, other astronomers had seen it before, but no one realized it was planet. Instead, they thought it was a star. Herschel actually
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This wave after wave after wave situation just keeps on getting more interesting with all of these winter hurricanes crashing on North Atlantic East Coast USA shores. God bless everyone,Thttps://www.paypal.me/THORnewshttps://www.patreon.com/thornews@newTH
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This is one to watch. God bless everyone,T
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IT IS ON*.God bless everyone,T
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When Falcon Heavy lifted off, it became 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
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Could we use the Sun as a telescope to get an up-close look at a planet orbiting another star? NASA 360 takes a look at the NASA Innovative Advanced Concept (NIAC) that explores the possibility of using the Sun as a Solar Gravitational Lens. To watch the
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3rd Nor'Easter in 10 days?Are you ready to face these wild weather challenges together?We've got activity on all sides in this wave after wave after wave nor'easter parade 2018. Be ready. Have no fear. Stay Cool. God bless everyone,Thttps://www.paypal.me/
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The Chandra X-ray Observatory has been used to study an Ultraluminous X-ray (ULX) source in whirlpool galaxy M51. It was determined that a neutron star is the source of this ULX. Previous studies of this type of ultra-bright phenomena have determined blac
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Data obtained using NASA's Juno spacecraft has revealed the depth of the "colorful bands of clouds" of the gas giant planet. -- Full Story: https://www.space.com/39907-jupiter-atmosphere-has-deep-stripes.htmlCredit: NASA/JPL-Caltech/SwRI/ASI
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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.For more information about STEM on Station:https://www.nasa.gov/audience/foreducators/stem
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The Hubble Space Telescope captured imagery of the Arp 256 system, a pair of interacting spiral galaxies. The system is 350 million light-years away in the Cetus constellation. Credit: Space.com / footage courtesy: ESA/Hubble, NASA, Digitized Sky Survey 2
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This video pans over NASA/ESA Hubble Space Telescope observations of the system Arp 256, about 350 million light-years from Earth. The system consists of two spiral galaxies in an early stage of a merger. Though the two galaxies are still separated by a l
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This video zooms in on the two interacting spiral galaxies of the ARP 256 system, about 350 million light-years away. It starts with a view of the night sky, focused on the constellation of Cetus (the Sea Monster), as seen from the ground. It then zooms t