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)
-
03:07
Double Comet Solar Stamps? and energetic South Beach Florida lightning storm.
Added 27 Views / 0 LikesEclipse Season 2024 days 3:stay cool.God bless everyone,Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
-
01:02
NASA's Perseverance rover captures Martian moon Phobos transit the sun - Real-time view!
Added 29 Views / 0 LikesThe Perseverance Mars rover's Mastcam-Z camera the Martian moon Phobos transit the Sun on Feb. 8, 2024. See real-time and time-lapsed views here. Credit: Space.com | NASA/JPL-Caltech/ASU/MSSS/SSI | edited by [Steve Spaleta](https://twitter.com/stevespalet
-
01:23
See the Milky Way's Sagittarius A* black hole in an amazing polarized Event Horizon Telescope image
Added 36 Views / 0 LikesA new image of supermassive black hole Sagittarius A* (Sgr A*). from the Event Horizon Telescope (EHT) collaboration "has uncovered strong and organised magnetic fields spiraling from its edge," according to ESO. [Full Story](https://www.space.com/black-h
-
03:06
5.8 Earthquake strikes California during a barrage of Solar Flares!
Added 27 Views / 0 LikesEclipse season 2024: day 2 - stay cool.God bless everyone.Thttps://www.paypal.me/THORnewshttps://venmo.com/TEric-Lewison$THORnews on CashApphttps://www.patreon.com/thornews
-
00:30
Pan: No zoom
Added 29 Views / 0 LikesThis image shows a globular cluster known as NGC 1651. Like the object in another recent Picture of the Week, it is located about 162 000 light-years away in the largest and brightest of the Milky Way’s satellite galaxies, the Large Magellanic Cloud (LMC)
-
09:13
SpaceX launches 23 Starlink satellites from Cape Canaveral Space Force Station, nails landing
Added 43 Views / 0 LikesA SpaceX Falcon 9 rocket launched 23 Starlink internet satellites lifted off from Cape Canaveral Space Force Station in Florida on March 25, 2024 at 7:42 p.m. EDT (2342 GMT). Full story: https://www.space.com/spacex-starlink-launch-group-6-46The Falcon 9'
-
01:01
Jets from a newly forming star 'blast across space' in amazing Hubble imagery
Added 27 Views / 0 LikesMulti-star system FS Tau has been captured by the Hubble Space Telescope. "Jets emerge from the cocoon of a newly forming star to blast across space" in the imagery, according to the Hubble team. Full Story: https://www.space.com/hubble-telescope-new-star
-
00:30
Pan: I Zwicky 18 (I Zw 18)
Added 25 Views / 0 LikesThe NASA/ESA/CSA James Webb Space Telescope has captured a spectacular view of the galaxy I Zwicky 18 (I Zw 18) in this new image. The galaxy was first identified by Swiss astronomer Fritz Zwicky in the 1930’s and resides roughly 59 million light-years fr
-
00:30
Pan: FS Tau
Added 28 Views / 0 LikesFS Tau is a multi-star system made up of FS Tau A, the bright star-like object near the middle of the image, and FS Tau B (Haro 6-5B), the bright object to the far right that is partially obscured by a dark, vertical lane of dust. The young objects are su
-
02:58
OMG. WTF. Key Bridge in Baltimore hit by ship & collapses.
Added 35 Views / 0 LikesWARNING: this footage is very unsettling.T
-
02:56
Space Engineers Tackle Morse Code Communication
Added 31 Views / 0 LikesJoin our space engineers as they tackle a communication crisis using DIY ingenuity in a remote setting. Learn to construct an IR Morse Code communicator with a Raspberry Pi, IR transceiver, and display, showcasing the power of creative solutions. Witness
-
12:23
First Belarusian in space and crewmates enter space station after Soyuz docking
Added 26 Views / 0 LikesBelarusian astronaut Marina Vasilevskaya, NASA's Tracy C. Dyson and Roscomos' Oleg Novitskiy completed ingress on the International Space Station shortly after docking on March 25, 2024. Credit: NASA
-
Watch Live! Final launch of Delta IV Heavy with secret US spy satellite
Added 34 Views / 0 LikesA secret U.S. spy satellite will launch into space on March 28, 2024. It will be the final flight of the massive Delta IV Heavy rocket. The booster is set to blast off at 1:40pm ET (0410 GMT) from Space Launch Complex-37 at Cape Canaveral Space Force Stat
-
Watch Live! Total Solar Eclipse 2024
Added 37 Views / 0 LikesOn Monday, April 8, 2024, a total solar eclipse will come to North America. Exactly six years, seven months and 18 days after the same type of solar eclipse crossed the U.S. from Oregon through South Carolina on August 21, 2017, this much longer event wil
-
01:01
Sunspot pair may have erupted with 'sympathetic solar flares,' including an X-flare!
Added 34 Views / 0 LikesWhen sunspots erupt at nearly the same time, it could be something known ast "sympathetic solar flares." A double eruption from sunpots AR3614 and AR3615 on March 23, 2024 may be an example of it. One of the flares was an X1-class flare and was captured i
-
07:14
It's going to get stormy & weird. Eclipse Season begins in 4* hours.
Added 30 Views / 0 LikesStay cool.God bless everyone,T
-
08:53
SpaceX launches 23 Starlink satelltes on booster's record-tying 19th flight
Added 23 Views / 0 LikesA SpaceX Falcon 9 rocket launched 23 Starlink internet satellites launched from NASA's Kennedy Space Center in Florida on March 23, 2024 at 11:09 p.m. EDT (0309 GMT on March 24). Full Story: https://www.space.com/spacex-starlink-launch-group-6-42It was th
-
1:11:36
Total Solar Eclipse 2024 at Rockland Astronomy Club - Joe Rao lecture
Added 28 Views / 0 LikesSpace.com skywatching columnist Joe Rao gave a lecture to the Rockland Astronomy Club on Feb. 23, 2024 about the upcoming total solar eclipse on April 8.Credit: Rockland Astronomy Club
-
08:33
Blastoff! Russian Soyuz rocket launches crew to space station
Added 27 Views / 0 LikesA Soyuz rocket carrying NASA's Tracy C. Dyson, Oleg Novitskiy and Marina Vasilevskaya launched to the International Space Station from the Baikonur Cosmodrome in Kazakhstan on March 23, 2024. Broadcast courtesy: NASA
-
09:00
RS-25 hotfire! NASA fires up Artemis moon rocket engine test
Added 25 Views / 0 LikesNASA tested a Space Launch System rocket RS-25 engine at the Stennis Space Center on March 22, 2024. Credit: NASA Stennis Space Center