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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Alert! Aprill 11 Bombogenesis Blizzard Land Hurricane could be Record Breaking!
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Pan across the Hubble Legacy Field
Added 351 Views / 0 LikesThis explores the detail of the Hubble Legacy Field, a mosaic of the distant Universe that documents 16 years of observations from the NASA/ESA Hubble Space Telescope. This image contains 200,000 galaxies that stretch back through 13.3 billion years of ti
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Partial Solar Eclipse Seen 4 Times by ESA Satellite
Added 351 Views / 0 LikesThe solar eclipse of July 2, 2019, was also witnessed in space by the European Space Agency's (ESA) Proba-2 satellite. "From Proba-2's perspective in Earth orbit the Moon crossed the satellite’s field of view four times," according to ESA. -- Solar Eclips
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See the Apollo-Era Spacesuits at NASA's Johnson Space Center
Added 351 Views / 0 LikesNASA spacesuit engineer Amy Ross descrbies the Apollo-era spacesuites on display at NASA's Johnson Space Center. Credit: Space.com
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A Live Look At Hurricane barry
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Cat 5 Hurricane Dorian Hovers Over Bahamas in Sept. 2 Satellite View
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Blastoff! Soyuz Rocket Launches New Space Station Crew
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Black Hole Shreds Star, NASA TESS Spots It! - Astrophysicist Explains
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Where is Possible Dwarf Planet Hygiea in Our Solar System?
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Ring of Fire Alert: next 30 days! Total Solar Eclipse + Approaching Jupiter & Saturn Conjunction
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Mercury, Jupiter and Saturn Seen At Same Time by SOHO Spacecraft
Added 351 Views / 0 LikesThe ESA/NASA Solar and Heliospheric Observatory captured imagery of Mercury, Saturn and Jupiter from Jan 4-6, 2019. -- SOHO: Spying on the Sun: https://www.space.com/18501-soho-solar-heliospheric-observatory.htmlCredit: ESA/NASA/mash mix by Space.com's St
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RED ALERT! Asteroid Fight Club Australia & Puerto Rico & Earthquakes Et AL.
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Christina Koch’s Memorable Moments: Part 1
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Chocolate chip cookies baked in space for 1st time
Added 351 Views / 0 LikesDoubleTree by Hilton chocolate chip cookies were baked on the International Space Station. -- Houston, we have a bake-off! We finally know what happens when you bake cookies in space: https://www.space.com/first-space-cookies-final-baking-results-aroma.ht
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See stunning Earth views as Cygnus spacecraft departs Space Station
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CoronaVirus Update: 85 USA cases, 2 Deaths & New York & Florida & Texas new cases
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Tour the center of the Milky Way Galaxy
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Liftoff! China launches Yaogan-30 family remote-sensing satellites
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See Mars helicopter 'Ingenuity' take-off while rover watches in new animation
Added 351 Views / 0 LikesA helicopter will accompany the Mars 2020 rover "Perseverance" on its trip to the Red Planet. The helicopeter has been named "Ingenuity."Credit: NASA/JPL-Caltech