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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Zoom into a creepy dying star Hubble time-lapse for Halloween
Added 247 Views / 0 LikesThe Hubble Space Telescope has imaged dying carbon star CW Leonis through the years. Zoom about 400 light-years into the Leo constellation and watch a time-lapse of the star. Full Story: https://www.space.com/creepy-dying-star-portal-hubble-telescopeCredi
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Zoom Into AG Carinae
Added 314 Views / 0 LikesThis video showcases a zoom into the 31st anniversary image from the NASA/ESA Hubble Space Telescope, AG Carinae.The star is waging a tug-of-war between gravity and radiation to avoid self-destruction. AG Carinae is surrounded by an expanding shell of gas
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Zoom into Arp 143
Added 249 Views / 0 LikesA spectacular head-on collision between two galaxies has been captured by the NASA/ESA Hubble Space Telescope, which has the unusual triangular-shaped star-birthing frenzy.The interacting galaxy duo is collectively called Arp 143. The pair contains the di
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Zoom Into Asteroid Bennu - NASA's OSIRIS-REx Mission Imagery
Added 492 Views / 0 LikesNASA's OSIRIS-REx mission has been capturing mission of its target, asteroid Bennu. -- Another Space Diamond!: https://www.space.com/42304-asteroid-bennu-diamond-photo-nasa-osiris-rex.htmlCredit: NASA
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Zoom Into Cassiopeia A
Added 120 Views / 0 LikesThis video takes the viewer on a journey to Cassiopeia A (Cas A), a supernova remnant located about 11 000 light-years from Earth in the constellation Cassiopeia. It spans approximately 10 light-years. This new image uses data from Webb’s Mid-InfraRed Ins
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Zoom Into CW Leonis
Added 187 Views / 0 LikesThe NASA/ESA Hubble Space Telescope celebrates Halloween this year with a striking observation of the carbon star CW Leonis, which resembles a baleful orange eye glaring from behind a shroud of smoke.CW Leonis glowers from deep within a thick shroud of du
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Zoom Into Dwarf Galaxy WLM
Added 140 Views / 0 LikesThis video zooms into a portion of the dwarf galaxy Wolf–Lundmark–Melotte (WLM) captured by the NASA/ESA/CSA James Webb Space Telescope’s Near-Infrared Camera. The final image shown demonstrates Webb’s remarkable ability to resolve faint stars outside the
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Zoom into GAL-CLUS-022058s
Added 137 Views / 0 LikesIn December 2020 the ESA/Hubble team published a stunning view from the NASA/ESA Hubble Space Telescope of one of the most complete Einstein rings ever discovered. This object is formally known as GAL-CLUS-022058s. This observation has since been used to
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Zoom Into GNz7q
Added 122 Views / 0 LikesAn international team of astronomers using archival data from the NASA/ESA Hubble Space Telescope and other space- and ground-based observatories have discovered a unique object in the distant, early Universe that is a crucial link between young star-form
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Zoom into Hubble’s view of Dumbbell Nebula for space telescope’s anniversary
Added 76 Views / 0 LikesThe Hubble Space Telescope is celebrating 34 years of service in 2024. See a new view of the Dumbbell Nebula to commemorate the anniversary. Credit: Space.com | NASA, ESA, STScI, A. Pagan (STScI) / Acknowledgment: D. Crowson, A. Fujii, Digitized Sky Surve
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Zoom Into Hurricane Dorian's Eye From Space in Amazing Time-Lapse
Added 404 Views / 0 LikesOn Sept. 3, 2019, ESA astronaut Luca Parmitano captured amazing imagery of Hurricane Dorian from the International Space Station. Over 350 images have been time-lapsed here. Story: Watch Hurricane Dorian in Action in These Gifs by NASA and NOAA: https://w
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Zoom Into II ZW 96
Added 199 Views / 0 LikesThis image takes the viewer to space to finish at Webb’s view of the galaxy merger II ZW 96. This pair of galaxies is roughly 500 million light-years from Earth and lies in the constellation Delphinus, close to the celestial equator. As well as the wild s
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Zoom into interacting galaxies Arp 142
Added 79 Views / 0 LikesThis video takes the viewer on a journey through space to the interacting galaxies known as Arp 142.The distorted spiral galaxy at the centre, the Penguin, and the compact elliptical galaxy at the left, the Egg, are locked in an active embrace. A new near
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Zoom Into M13
Added 305 Views / 0 LikesThis video features a zoom into M13. To investigate the physics underpinning white dwarf evolution, astronomers compared cooling white dwarfs in two massive collections of stars: the globular clusters M3 and M13. These two clusters share many physical pro
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Zoom Into M3
Added 267 Views / 0 LikesThis video features a zoom into M3. To investigate the physics underpinning white dwarf evolution, astronomers compared cooling white dwarfs in two massive collections of stars: the globular clusters M3 and M13. These two clusters share many physical prop
