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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02:25
X-CLASS SOLAR FLARE! 12 SUNSPOTS & BIG STORMS ON THE WAY!
Added 96 Views / 0 LikesStay Cool & have a great weekend.God bless everyone,T LEWISONhttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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10:41
X-Class Solar Flare! Hurricane Watch! Polar Vortex to hit New Zealand! Hot Heat hitting China!
Added 115 Views / 0 LikesHappy Sunday Y'all!God bless everyone,https://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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07:03
X-Class Solar Flare! Red Auroras over Florida! BIG STORM on Friday! Bye Bye Safemoon.
Added 78 Views / 0 Likesand bye bye safemoon.God bless everyone,T LEWISONhttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
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00:55
X-Flare Again! Huge Complex of Sun Storms Not Letting Up | Video
Added 614 Views / 0 LikesX-Flare Again! Huge Complex of Sun Storms Not Letting Up | Video
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01:10
X-Flare Close-up - NASA IRIS Mission Picks Right Sunspot | Video
Added 613 Views / 0 LikesX-Flare Close-up - NASA IRIS Mission Picks Right Sunspot | Video
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01:04
X-Flare Double Whammy! New Sunspot Makes Presence Felt | Video
Added 694 Views / 0 LikesX-Flare Double Whammy! New Sunspot Makes Presence Felt | Video
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01:21
X-Flare Exploded From Massive Earth-Facing Sunspot | Video
Added 731 Views / 0 LikesAn X1-class flare erupted from sunspot AR1944 on Jan. 7th, 2014. A geomagnetic storm may affect Earth, possibly resulting in radio interference, or even electrical blackouts. Earlier in the day, a less powerful M-class flare was recorded as well.
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01:04
X-Flare! New Sunspot Makes Presence Known | Video
Added 628 Views / 0 LikesX-Flare! New Sunspot Makes Presence Known | Video
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02:13
X-Ray Pulsar Pair Caught Morphing | Video
Added 748 Views / 0 LikesIt's like watching siblings tussle: Astronomers have finally witnessed a long-sought example of pulsar evolution. Designated PSR J1824-2452I, this X-ray Binary is being spun up to millisecond speeds by a tiny companion, 1/5th the Sun's mass. Read more abo
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02:56
X-ray rings spotted around black hole - Take a tour
Added 161 Views / 0 LikesNASA's Chandra X-ray Observatory and the Neil Gehrels Swift Observatory detected "X-rays ricocheting off dust clouds" in binary system V404 Cygni, according to the Chandra team. Credit: NASA/CXC/A. Hobart
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01:17
X-Rays Reveal Interactions Between Eta Carinae Stars | Video
Added 3,720 Views / 1 LikesX-Rays Reveal Interactions Between Eta Carinae Stars | Video
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01:14
X1.1 solar flare! New sunspot makes presence known with major fireworks
Added 85 Views / 0 LikesNASA Solar Dynamics Observatory captured newly arrived sunspot AR3341 blast a powerful X1.1 solar flare on June 20, 2023. The flare "caused a deep shortwave radio blackout over North America." according to Spaceweather.com. Credit: Space.com | footage cou
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01:24
X1.9 solar flare! Hyperactive sunspot eruption seen by spacecraft
Added 98 Views / 0 LikesSunspot AR3184 erupted with an X1.9-class solar flare on Jan. 9, 2022. NASA's Solar Dynamics Observatory (SDO) captured the fireworks. The sunspot has been very active since it rotated into SDO's view. Credit: NASA/SDO/helioviewer.org | edited by Space.co
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04:02
X100,000 Flare Unleashed By Nearby Red Dwarf | Video
Added 560 Views / 0 LikesX100,000 Flare Unleashed By Nearby Red Dwarf | Video
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01:02
X2.8! Sun blasts most powerful flare since 2017, spacecraft sees it
Added 48 Views / 0 LikesNASA’s Solar Dynamics Observatory captured an X2.8-class solar flare and a pair of m-flares that preceded it in multiple wavelengths on Dec. 14, 2023. It was the biggest flare since an X9.3 flare in Sept. 2017. Credit: Space.com | footage courtesy: NASA /
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01:06 New
X3.4! Big sunspot blasts another major flare on way out
Added 8 Views / 0 LikesSunspot AR3664 is almost completely out of view but continues to deliver fireworks. The latest blast comes in as an X3.48-class solar flare. NASA's Solar Dynamics Observatory captured footage of it in multiple wavelengths. The sunspot is no longer facing
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01:08
X5 flare! Sun bids farewell to 2023 will massive blast
Added 48 Views / 0 LikesThe sun erupted with an X5-class solar flare on Dec. 31, 2023. NASA Solar Dynamics Observatory captured the fireworks in multiple wavelengths. Credit: Space.com | footage courtesy: NASA/SDO/Helioviewer.org | edited by [Steve Spaleta](https://twitter.com/s
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01:13
X8.2 Flare! Sunspot Fires Parting Shot
Added 461 Views / 1 LikesX8.2 Flare! Sunspot Fires Parting Shot