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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Preparing America For Deep Space Exploration Episode 9: Ready To Rumble
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Preparing for launch! NASA's Kate Rubins talk new space station mission
Added 283 Views / 0 LikesNASA astronaut Kate Rubins talks about her new International Space Station mission with Space.com's Chelsea Gohd. Rubin's was in Star City, Russia at the time of the interview. Credit: Space.com
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Prepping Artemis 1 for launch! How NASA tested rocket at pad
Added 111 Views / 0 LikesThe rollout and wet dress rehearsal of the Space Launch System rocket carrying the Artemis 1 mission is explained in the third episode of NASA's series "Artemis 1: Path to the Pad." -- NASA's most powerful rocket to launch risky moon mission test flight:
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Present Life On Mars Not Ruled Out – Curiosity Rover | Vid
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01:24
President Biden hails Mars landing in call to NASA
Added 200 Views / 0 LikesPresident Biden called NASA acting administrator Steve Jurczyk after the Perseverance rover landed on Mars. -- Touchdown! NASA's Perseverance rover lands on Mars to begin hunt for signs of ancient life: https://www.space.com/perseverance-mars-rover-landin
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President Biden makes surprise visit to Ukraine as air raid sirens blare! Deadly Sinkhole in Brazil!
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President Obama Congratulates Orion's Lead Engineer | Video
Added 583 Views / 0 LikesPresident Obama Congratulates Orion's Lead Engineer | Video
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07:23
President Obama signs Executive Order preparing USA for Space Weather Events
Added 585 Views / 0 LikesPresident Obama signs Executive Order preparing USA for Space Weather Events
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Preview NASA's SpaceX Crew-6 launch in this mission trailer
Added 83 Views / 0 LikesNASA's SpaceX Crew-6 mission scheduled to lift-off from Launch Pad 39A at the Kennedy Space Center in Florida on Feb. 27, 1:45 a.m. EST (0645 GMT). How to watch live: https://www.space.com/spacex-crew-6-astronaut-flight-watch-liveThe first United Arab Emi
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Private astronaut sets HALO formation-flying skydive record
Added 53 Views / 0 LikesPrivate astronaut Larry Connor and the U.S. Air Force Special Warfare Pararescue Specialists made history on Sept. 28, 2023 with the highest-altitude formation HALO (high altitude, low open) jump ever. They dove from an altitude of 38,000 feet (11,582 met
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Private Ax-2 astronauts call Earth from orbit aboard SpaceX Dragon 'Freedom'
Added 73 Views / 0 LikesThe Axiom Space Ax-2 crew, commander Peggy Whitson, pilot John Shoffner, and mission specialists Ali Alqarni and Rayyanah Barnawi talk about their launch aboard SpaceX Crew Dragon Freedom. Watch them launch: https://www.space.com/spacex-ax-2-private-astro
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Private Ax-2 crew's space station welcome ceremony - 600th astronaut gets wings!
Added 68 Views / 0 LikesAxiom Space Ax-2 crew commander Peggy Whitson, pilot John Shoffner, and mission specialists Ali Alqarni and Rayyanah Barnawi were welcomed aboard the International Space Station shortly after their SpaceX Crew Dragon docked. Watch them launch: https://www
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Private Chinese Company Launches Hyperbola-1 Rocket For 1st Time
Added 297 Views / 0 LikesThe Beijing Interstellar Glory Space Technology Corporation designed Hyperbola-1 rocket launched from the Jiuquan Satellite Launch Center in north China on July 25, 2019. Credit: CCTV
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14:09
Private Japanese lander’s moon touchdown likely failed, still captured amazing Earth views
Added 72 Views / 0 LikesJapanese company iSpace's Hakuto-R lander made a historic trip to the moon. Along the way captured video of the moon and a photo of the it's shadow cast on the moon during a solar eclipse. Unfortunately, the lander was likely lost during its moon landing
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02:43
Private Japanese moon lander's view of solar eclipse shadow and Earth are amazing!
Added 63 Views / 0 LikesJapanese company iSpace's Hakuto-R lander captured amazing views of the the Earth during a solar eclipse and more during its journey to a moon landing attempt. Full Story: https://www.space.com/moon-earth-shadow-solar-eclipse-landing-ispaceCredit: iSpace
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Private Moon Landers - Target Landing Sites Unveiled
Added 351 Views / 0 LikesNew NASA partners Orbit Beyond, Astrobotic, and Intuitive Machines explain where they are targeting for landing on the moon. -- These Are the Private Lunar Landers Taking NASA Science to the Moon: https://www.space.com/nasa-first-private-moon-landers-pick
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Proba-2 spacecraft sees partial solar eclipse multiple times
Added 107 Views / 0 LikesESA's Proba-2 spacecraft orbits Earth in about 100 minutes, giving it the ability to see solar eclipses multiple times. See the views of the Oct. 25th partial solar eclipse in these time-lapses. The last solar eclipse of 2022 thrills skywatchers around th
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Probe Hears Eerie Intelligent Signals. Oh Wait: It's Us! | Video
Added 610 Views / 0 LikesAmateur radio operates beamed up 'Hi' in morse code on Oct. 9th, 2013 to NASA's Juno spacecraft. It was received by the probe and the audio from the event was sent back to Earth.