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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Hoag's Object is a Cosmic Mystery
Added 253 Views / 0 LikesWithin the Serpent Constellation lies a galaxy within a galaxy within a galaxy called the Hoag's Object. - Learn More About This Cosmic Mystery: https://www.livescience.com/hoags-object-perfect-ring-mystery.htmlCredit: Live Science / produced & edited by
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Holiday Cheer! Astronauts Search for Elf on the Shelf on Space Station
Added 379 Views / 0 LikesSpace Station crew members Anne McClain and David Saint-Jacques have some holiday fun with the Elf on the Shelf. TheCredit: NASA
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Holiday Gift Guide Pick - 'Nightwatch: A Practical Guide To Viewing The Universe' | Video
Added 612 Views / 0 LikesHoliday Gift Guide Pick - 'Nightwatch: A Practical Guide To Viewing The Universe' | Video
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Holiday Season Spacewalks O-Plenty - ISS Update Video
Added 644 Views / 0 LikesIn the latest episode of 'Space To Ground, NASA's Nicole Cloutier-Lemasters talks about spacewalks to repair the stations cooling system and add Earth-observing cameras to the stations exterior. Also, how to spot the ISS in the night sky.
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Holidays and birthdays in Space! How astronauts celebrate?
Added 146 Views / 0 LikesNASA astronaut Megan McArthur talks to Space.com's Chelsea Gohd about the festive celebrations on space station. Full Story: https://www.space.com/astronaut-megan-mcarthur-birthday-holidays-in-space-videoCredit: NASA
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Holocaust survivor who met Einstein sees his theories in James Webb Space Telescope images
Added 68 Views / 0 LikesHolocaust survivor Werner Salinger met regularly with renowned physicist Albert Einstein in the 1940s, after Salinger and his family fled Nazi Germany to live in Princeton, New Jersey. Recently, Salinger sat down with Arizona State University researchers
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Holy Flux! The Wild Weather watch continues! + Lots of Solar Action.
Added 84 Views / 0 Likeshave a great weekend.God bless everyone,T LEWISONhttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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Holy Smoke! 3.8 Mag Comet Q2 Lovejoy is FAST & has a magnetic storm!
Added 684 Views / 0 LikesHoly Smoke! 3.8 Mag Comet Q2 Lovejoy is FAST & has a magnetic storm!
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HOLY WOW! 9 SUNSPOTS ON THE SUN!
Added 106 Views / 0 LikesYeeeeeeeeeha!God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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Homecoming | Down to Earth - S2:E8
Added 72 Views / 0 LikesIn the final episode featuring astronaut Victor Glover and his daughter, Corinne, they discuss the excitement of returning to Earth from an extended mission on the International Space Station.
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01:14
Hopping Robot Concept to Explore Frozen Ocean Worlds
Added 301 Views / 0 LikesNASA is researching a hopping robot that can easily navigate the harsh glacier-like terrain on icy worlds in our solar system. And that’s just the tip of the iceberg.NASA 360 takes a look at the NASA Innovative Advanced Concept (NIAC) called S.P.A.R.R.O.W
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Horrible Floods in Malaysia as Prime Minister golfs with President in Hawaii
Added 860 Views / 0 LikesHorrible Floods in Malaysia as Prime Minister golfs with President in Hawaii
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Horrible Wildfires in Arizona! The Big Chicago SAVE! Major Floods in Yellowstone! Bitcoin below 21k!
Added 138 Views / 0 LikesThe 2nd half of June will be challenging, y'all.God bless everyone,T LEWISON5430 BIRDWOOD RD. #416HOUSTON TEXAS 77096https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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Horrific Flooding continues in 6 USA states as Multiple levees are breached.
Added 551 Views / 0 LikesHorrific Flooding continues in 6 USA states as Multiple levees are breached.
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01:01
Hot Exoplanet's Escaping Helium Seen from Ground - Artist Impression
Added 394 Views / 0 LikesUsing the Calar Alto 3.5-meter telescope, researchers captured near-infrared observations of helium escaping the atmosphere of a gas giant exoplanet called WASP-69b. -- A Helium Tail Trails This Fluffy Alien Planet: https://www.space.com/42654-helium-tail
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Hot Fire! Boeing Starliner Service Module’s Thrusters Tested
Added 334 Views / 0 LikesBoeing tested the thrusters of the Starliner Service Module in White Sands, New Mexico on May 29, 2019. -- Boeing Completes Tests of Starliner Thrusters: https://www.space.com/boeing-completes-tests-starliner-thrusters.htmlCredit: Space.com / footage cour
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Hot fire! NASA SLS megarocket's core stage tested for over 8 minutes
Added 188 Views / 0 LikesNASA test-fired the core stage of the Space Launch System rocket on March 18, 2021 at NASA's Stennis Space Center in Mississippi. The test lasted 499 seconds. Credit: NASA
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Hot fire! NASA's new Artemis rocket engines closer to certification after penultimate test
Added 73 Views / 0 LikesNASA has been conducting a series of hot fire tests to certify new RS-25 engines for use on the Space Launch System rockets that will launch Artemis missions to the moon. On June 15, 2023, the penultimate test in the series was conducted at NASA's Stennis