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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'Grazing' Saturn's Rings - Cassini Spacecraft Will Get Closer Than Ever | Video
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'Great day for Earth!' NASA Chief talks Webb post launch
Added 240 Views / 0 LikesNASA administrator Bill Nelson talks about the potential of the James Webb Space Telescope shortly its deployment in space on Christmas Day 2021. Full Story: https://www.space.com/nasa-james-webb-space-telescope-launch-successCredit NASA
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'Great Eruption' Nebula Visualization is 3D Printable | Video
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'Green Bubble' Planetary Nebula Seen In Greatest Detail Yet | Video
Added 819 Views / 0 LikesEurope's Very Large Telescope captured imagery of planetary nebula IC 1295. It can be found in the constellation of Scutum (3300 light years away).
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'Guitar God' Joe Satriani’s Pluto Fly-By Impressions | Music + Video
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'Gushing' Hot Plasma Erupts From Sun | Video
Added 839 Views / 0 LikesA solar flare erupted from an active region on the Sun on April 4th, 2014. NASA's Solar Dynamics Observatory caught a close-up view of the turning and shifting plasma.
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'Half dozen' explosions on Sun spotted by spacecraft in 5 hours
Added 206 Views / 0 LikesNASA's Solar Dynamics Observatory (SDO) has captured a series of eruptions on the sun over the course of 5 hours on October 26, 2021.Credit: Space.com | NASA/SDO/Science teams: AIA/EVE/HMI | produced & edited by Steve Spaleta (http://www.twitter.com/steve
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'Halo' Of Echoing X-rays From Magnetar Outburst | Video
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'Hello, Mars' single features first-ever sound from the red planet!
Added 326 Views / 0 LikesA first! This music video features the first audio to have ever been recorded from Mars, as well as the first color images taken by NASA's rover, Perseverance. Written and sung by Space.com's Chelsea Gohd (aka Foxanne)Check out Foxanne on Bandcamp & Spoti
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'Hidden X-ray Cosmos' to be studied by XRISM mission
Added 176 Views / 0 LikesLearn how the NASA/JAXA X-ray Imaging and Spectroscopy Mission (XRISM) will study the 'X-ray Cosmos' in this explainer from the Goddard Space Flight Center. Credit: NASA/Goddard Space Flight Center.
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'Horde of dead stars!' Spider pulsars caught destroying nearby stars
Added 140 Views / 0 LikesData from the Chandra X-ray Telescope has revealed spider pulsars, which are a group of dead stars, in globular cluster Omega Centauri "preying' on nearby stars. The Chandra team explains. Credit: NASA/CXC/A. Hobart
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'Hot Saturn' Without Clouds Detected Using Very Large Telescope
Added 502 Views / 0 LikesUsing the Very Large Telescope in Chile, astronomers have detected an “exoplanet atmosphere that is free of clouds,” according to the University of Exeter. -- Full Story: https://www.space.com/40526-alien-planet-wasp-96b-has-no-clouds.htmlCredit: Space.co
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'Huge Revolution In Spaceflight' - Elon Musk Comments on 1st Reused SpaceX Rocket | Video
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'Hungry' Black Hole Has Surprising Meal to Munch On
Added 380 Views / 0 LikesA Hubble Space Telescope observation of active galaxy NGC 3147 has revealed that the supermassive black hole at its core has a peculiar disk surrounding it. Surprise! This Monster Black Hole's Disk Shouldn't Exist: https://www.space.com/black-hole-disk-sh
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'Hyperactive sunspot' unleashes multiple X and M flares - Spacecraft see it!
Added 101 Views / 0 LikesSunspot AR3663 has been incredibly active with multiple X and M-class flares on May 5-6, 2024. The latest on May 6 was a powerful X4.5-class solar flare, one of the largest of the year. NASA's Solar Dynamics Observatory captured the fireworks.Credit: Spac
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'Impossible' monster black hole involved in 'most massive' merger detected
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'Intelligent' robotic arm to launch with new space station module
Added 272 Views / 0 LikesEuropean Robotic Arm (ERA) will be able to "move back and forward by itself, hand-over-hand between fixed base-points," according to ESA, It will be launched to the International Space Station along with the 'Nauka' Russian Multipurpose Laboratory Module.
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'Interplanetary Shock' In Earth's Magnetic Field Observed By Van Allen Probes | Video
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'It b a VERY BAD SIGN!' A THORnews December Massive Tornado Blizzard Storm moment part 2-10 DAYS tho
Added 123 Views / 0 Likeshello again.*waves*Happy Holidays!Merry Christmas!God bless everyone,Love,T