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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SpaceX Starship 25 and Super Heavy booster 9 launched to orbit on Nov. 18, 2023 from the Starbase facility in South Texas. See tracking cam footage of the booster engine cutoff and stage separation. [See the full launch here](https://www.space.com/spacex-
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The crew aboard the International Space Station deliver their annual Thanksgiving message from space.Credit: NASA
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The Canadian Space Agency has announced that Jenni Gibbons and Joshua Kutryk have joined their astronaut ranks. Hear from them both here. Credit: CSA
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The Shenzhou 17 crew, Tang Hongbo, Tang Shengjie and Jiang Xinlin, have been keeping busy with experiments, Earth photography and more. Catch a glimpse of their activities aboard the Tiangong space station. Credit: Space.com | footage courtesy: China Cent
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Aboard the International Space Station, NASA astronauts Jasmin Moghbeli and Loral O’Hara along with ESA (European Space Agency) astronaut Andreas Mogensen and JAXA (Japan Aerospace Exploration Agency) astronaut Satoshi Furukawa shared their thoughts about
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A SpaceX Falcon 9 rocket launched a new Starlink batch from Space Launch Complex 40 (SLC-40) at Cape Canaveral Space Force Station in Florida on Nov. 22, 2023. [Full Story](https://www.space.com/spacex-starlink-launch-group-6-29)The first stage of the roc
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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 #AskNASA to talk to us.Learn more about the important research being operated on Station:https://www.nasa.gov/iss-scien
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Sustained success does not happen by accident. Daily operations on the space station fuel research in plant growth, medical science and life support technology that improves life on Earth.
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Years of accomplishments, one day at a time. From medicinal testing to climate study and systems maintenance, every day of advancement adds up to years of groundbreaking achievements.
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“Spaceflight is a team sport,” astronaut Josh Cassada says as he joins Space Station Researcher Gioia Massa and Space Station Deputy Program Manager Dana Weigel in highlighting some of the ways the orbiting laboratory helps NASA advance technology and imp
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Starship returned to integrated flight testing with its second launch from Starbase in Texas. While it didn’t happen in a lab or on a test stand, it was absolutely a test. What we did with this second flight will provide invaluable data to continue rapidl
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NASA's Deep Space Optical Communications (DSOC) demonstration is flying on the Psyche mission. Learn more about it here. Credit: NASA/JPL-CaltechProduced by: True Story Films
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NASA is testing lander hardware to be used for a mission to Jupiter's moon Europa. It is an "evolution of hardware used on previous NASA lander mission," according to NASA.Credit: NASA Jet Propulsion Laboratory
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SpaceX Starship 25 and Super Heavy booster 9 launched to orbit on Nov. 18, 2023 from the Starbase facility in South Texas. Following the launch, the booster experienced a Rapid Unplanned Disassembly (RUD). [See the full launch here](https://www.space.com/
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The James Webb Space Telescope's Near-Infrared Camera (NIRCam) has revealed a stunning view of star-forming region Sagittarius C (Sgr C). It is "about 300 light-years from the Milky Way’s central supermassive black hole, Sagittarius A*," according to the
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The full view of the NASA/ESA/CSA James Webb Space Telescope’s NIRCam (Near-Infrared Camera) instrument reveals a 50 light-years-wide portion of the Milky Way’s dense centre. An estimated 500,000 stars shine in this image of the Sagittarius C (Sgr C) regi
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SpaceX launched 2 Starlink internet satellites from Vandenberg Space Force Base in California early on Nov. 20, 2023. The first stage of the rocket landed on the Of Course I Still Love You droneship in the Pacific Ocean shortly after stage separation. Cre
RED ALERT! BIG STORM MONDAY! Volcanoes! French ICBMs! Asteroid 2023 WA Whoa! & a wild 10 days ahead!Added 31 Views / 0 Likes
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