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)
28:10Added 137 Views / 0 Likes
In the classic NASA documentary about the Apollo 13 mission, astronauts James Lovell, Fred Haise, John "Jack" Swigert and their mission control team collaborate to overcome adversity after an oxygen tank explosion nearly led to disaster. Apollo 13 at 50:
03:30Added 127 Views / 0 Likes
Rocket Lab's Electron rocket launched the Palisade cubesat for Astro Digital from the Mahia Peninsula in New Zealand on Oct. 16, 2019. Story: Rocket Lab Launches Highest Mission Yet https://www.space.com/rocket-lab-highest-launch-astro-digital-satellite.h
01:37Added 111 Views / 0 Likes
What was once a planet, no longer exists. Learn about Fomalhaut b and the aftermath observed using the Hubble Space Telescope causing it to lose its "planethood." Full Story: https://www.space.com/disappearing-exoplanet-fomalhaut-b.htmlCredit: ESA/NASADir
00:49Added 151 Views / 0 Likes
NASA astronauts Christina Koch and Jessica Meir are celebrating Thanksgiving on Space Station with 'Astronaut Snoopy'. -- Full Story: https://www.space.com/astronaut-snoopy-on-space-station-thanksgiving-parade-2019.htmlCredit: NASA
01:09Added 499 Views / 0 Likes
'Baby' Super-Neptune Found Orbiting Close To Star | Video
00:53Added 522 Views / 0 Likes
'Beast' Asteroid's Radar Observations Most Detailed Ever | Video
00:24Added 197 Views / 0 Likes
Virgin Galactic's VSS Unity reached an apogee of 170,800 feet on July 26, 2018, the highest a powered flight has ever taken it. It is one step closer to suborbital spaceflight. -- Reached the Mesosphere: https://www.space.com/41295-virgin-galactic-reaches
03:45Added 496 Views / 0 Likes
On October 19th, 2013, the Nucleus Gallery in California hosted a party for the grand opening of their new art exhibit. Over 50 pieces of commissioned artwork was available for viewing and sale ranging from photos to painting to knit dolls.
03:31Added 513 Views / 0 Likes
The constellations of Ursa Major (the 'Big Dipper') and Leo hold a bevy of skywatching goodness this month. Find out how to see the 'Leo Tripet' of galaxies, plus the double star systems of Mizor and Alcor, and more.
04:30Added 405 Views / 0 Likes
'Blue Moon' Lander in 5 Years? Blue Origin at National Space Council Meeting
03:34Added 34 Views / 0 Likes
ESA's Solar Orbiter obtained new imagery of 'campfires' on the sun in February 2021. The process that creates campfires may "contribute significantly to the heating of the Sun’s outer atmosphere, or corona," according to the European Space Agency.Credit:
02:16Added 561 Views / 0 Likes
Visualizers at Goddard Space Flight Center made this video of a 'canyon of fire', created by the eruption of a 200,000 mile long solar filament ripping through the sun's corona.The different colors highlight different temperatures.
04:59Added 425 Views / 0 Likes
'Captain Kirk' Gives Command to Send Message to Voyager Probe
00:55Added 334 Views / 0 Likes
NASA’s Parker Solar Probe is scheduled to launch this summer and will carry a microchip that can have your name saved on it! NASA and William Shatner invites the public to participate on this mission to explore the Sun. (Deadline April 27, 2018). -- Learn
02:45Added 265 Views / 0 Likes
Mars, Jupiter, Saturn and the moon will create a 'celestial quartet' in the night sky during March. Also, find out where to spot the brightest star in the sky Sirius and more in this skywatching guide. - Night sky, March 2020: What you can see this month
01:44Added 85 Views / 0 Likes
ESA astronaut Luca Parmitano has some advice for children as they look to their future. [No Place Like Home: Astronaut Luca Parmitano Reminds Us How 'Precious' Earth Is](https://www.space.com/astronaut-luca-parmitano-climate-change-message.html)Credit: ES
02:14Added 144 Views / 0 Likes
Blue Origin founder and CEO Jeff Bezos talks about the inspiration of NASA's Apollo missions and how humanity has a choice of capping population and energy usage or "moving out into space."Credit: Blue Orgin
02:23Added 437 Views / 0 Likes
'Cosmic Clouds' Lit Up By New Star | Video
01:24Added 548 Views / 0 Likes
'Cosmic Recycling' Seeds The Prawn Nebula | Observatory Zoom-In Video
01:58Added 502 Views / 0 Likes
Neil DeGrasse Tyson, the host of the re-envisioned show, introduces a zero-gravity demonstration of Newton's third law of motion. Expedition 38's Rick Mastracchio and Koichi Wakata prove the law aboard the International Space Station.