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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China's Chang'e 6, Chang'e 7 and Chang'e 8 missions to the moon are under development. Hear from Chang'e 7 deputy chief designer and learn about the "flying vehicle" that will search for traces of water and ice on the moon's south pole. Credit: Space.com
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A SpaceX Falcon 9 rocket launched its heaviest payload to date, carrying 56 Starlink satellites that weighed in at a combined 17.4 metric tonnes (19.4 tons). The rocket lifted off from Space Launch Complex 40 at Cape Canaveral Space Force Station in Flori
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SpaceX is targeting Thursday, January 26 at 4:32 a.m. ET (9:32 UTC) for a Falcon 9 launch of 56 Starlink satellites to low-Earth orbit from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida. There is an additional launch opportunity
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This is the vehicle trajectory and mission control audio without any additional commentary. There may be very long periods of silence. For our full hosted webcast, visit https://www.spacex.com/launches/
4.2 Earthquake Malibu, California! Major ICE STORM next week ?!? Near Earth Asteroid BU & Comet ZTF!Added 11 Views / 0 Likes
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The James Webb Space Telescope captured asteroid 10199 Chariklo occult the star Gaia DR3 6873519665992128512. It was the "first asteroid found to have a ring system," according to NASA.Credit: Space.com | NASA, ESA, CSA, Nicolás Morales (IAA/CSIC) | edite
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NASA Ingenuity helicopter flew for the 40th time on Jan. 19, 2023. See black & white and color footage along with statistics from the flight. Perseverance rover tracks can be seen. Full Story: https://www.space.com/mars-helicopter-ingenuity-40th-flightCre
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A Rocket Lab Electron rocket launched three HawkEye 360 satellites from NASA's Wallops Flight Facility in Virginia on Jan. 24, 2023. It was the first launch for the private spaceflight company from US soil. Credit: Rocket Lab
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NASA administrator Bill Nelson announces that NASA and DARPA will collaborate to develop and demonstrate the Demonstration Rocket for Agile Cislunar Operations (DRACO) spacecraft, which will employ a nuclear thermal rocket engine. Credit: NASA
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People on or near the U.S. East Coast might be able to see "Virginia Is for Launch Lovers" with their own eyes, weather permitting. "From a distance, Electron will appear like a bright, fast-moving star in the sky," NASA Wallops officials said via Twitter
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China's Yutu-2 rover recently beamed back new imagery of the lunar surface. See rover tracks and more in the new views from the far side of the moon. Credit: Space.com | footage courtesy: China Central Television (CCTV) | edited by Steve Spaleta (https://
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SpaceX conducted a wet dress rehearsal for their stacked Starship and Super Heavy rocket on Jan. 23, 2023 at their Starbase facility in south Textas. It was the next step in preparation for launch. Full Story: https://www.space.com/spacex-stacked-starship
RED ALERT! Asteroid 2023 UB is going to pass Earth at ZERO Lunar Distances! & Odd Earth's Core News!Added 8 Views / 0 Likes
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Anthony Gomez captured video of SpaceX's Starship wet dress rehearsal from a few miles away at the Rocket Ranch, Texas outpost (https://www.rocketranchbocachica.com/) on Jan. 23, 2023. Learn more about Rocket Ranch on their Patreon page: https://www.patre
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The James Webb Space Telescope captured amazing imagery of the Chameleon I dark molecular cloud. It harbors the "deepest, coldest ices measured to date in a molecular cloud," according to ESA.Credit: Space.com | footage courtesy: ESA/Webb, NASA, CSA, STSc
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Shenzhou-15 astronauts Fei Junlong, Deng Qingming and Zhang Lu send down their Chinese New Year message from the Tiangong space station. Credit: Space.com | footage courtesy: China Central Television (CCTV) | edited by Steve Spaleta (https://twitter.com/s
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This video features a new image from the NASA/ESA/CSA James Webb Space Telescope’s Near-InfraRed Camera (NIRCam), showcasing the low-mass star forming region Chameleon I.An international team of astronomers has reported the discovery of diverse ices in th
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Asteroid 2023 BU will flyby Earth on Jan. 26, 2023. The space rock's closest approach will be ~10,000 km (~6,200 mi) away. It is estimated to be about 3.7 - 8.2 meters in diameter (12.1 - 26.9 feet). Credit: Space.com | orbit animation: NASA/JPL-Caltech |