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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)

 

  • 08:16 New Major Floods & Rain for Florida & East Coast

    Major Floods & Rain for Florida & East Coast

    by admin Added 2 Views / 0 Likes

    Don't be scared. Be prepared. God bless everyone,T

  • 04:45 New Blastoff! Cygnus Rides to Space Station Atop Antares Rocket

    Blastoff! Cygnus Rides to Space Station Atop Antares Rocket

    by admin Added 3 Views / 0 Likes

    An Orbital ATK Cygnus spacecraft carrying supplies and experiments to the International Space Station launched from NASA’s Wallops Flight Facility on May 21, 2018. Credit: NASA

  • 01:07 New OTD in Space – May 20: NASA Launches Pioneer Venus 1

    OTD in Space – May 20: NASA Launches Pioneer Venus 1

    by admin Added 11 Views / 0 Likes

    On May 20, 1978, NASA launched a spacecraft to Venus. The mission was called Pioneer-Venus 1, but it’s also known as the Pioneer Venus Orbiter. This was the first of two spacecraft that made up the Pioneer Venus mission. Pioneer Venus 2 launched a couple

  • 26:45 New Wild Weather USA Right Now: Storms & Hawaii & Jet Streams & Wind & Pressure & Rain & Us

    Wild Weather USA Right Now: Storms & Hawaii & Jet Streams & Wind & Pressure & Rain & Us

    by admin Added 6 Views / 0 Likes

    I am not a professional Meteorologist, Volcanoist, Earthquaekist.like they don't invite me to science talks and debates either. Please watch the 7 min video I edited before I made this conversational one taker if you want to get up to full speed.This vide

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    Weather Warriors: Riders on the Storm pt 1- MesoScale Convective System

    by admin Added 6 Views / 0 Likes

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  • 01:09 New OTD in Space – May 19: STS-101 Launches with 1st 'Glass Cockpit'

    OTD in Space – May 19: STS-101 Launches with 1st 'Glass Cockpit'

    by admin Added 7 Views / 0 Likes

    On May 19, 2000, the space shuttle Atlantis launched with the very first "glass cockpit." This was one of several big upgrades that were made to the space shuttle before the mission STS-101. NASA called this new and improved version of Atlantis “the most

  • 02:32 New Water on Europa - Old Galileo Mission Data Leads to New Evidence

    Water on Europa - Old Galileo Mission Data Leads to New Evidence

    by admin Added 4 Views / 0 Likes

    An analysis of old and new data on the plumes of Europa has led to new evidence of water on the Jovian Moon. -- Learn More: https://www.space.com/40575-jupiter-moon-europa-plume-galileo-spacecraft.htmlCredit: NASA/JPL-Caltech

  • 02:15 New Space to Ground: Kilauea Volcano: 05/18/2018

    Space to Ground: Kilauea Volcano: 05/18/2018

    by admin Added 7 Views / 0 Likes

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  • 01:14 New Distant Galaxy Surprisingly Had Early Stage Star Formation

    Distant Galaxy Surprisingly Had Early Stage Star Formation

    by admin Added 7 Views / 0 Likes

    Distant galaxy MACS1149-JD1 was observed using the Atacama Large Millimeter/submillimeter Array (ALMA) and ESO’s Very Large Telescope (VLT) and astronomers have determined that star formation was occuring there only 250 million years after the Big Bang. -

  • 06:23 New What's the New NASA Admin's Position on Climate Change?

    What's the New NASA Admin's Position on Climate Change?

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    NASA administrator Jim Bridenstine talks about his position on climate change and the status of the Orbiting Carbon Observatory 3 (OCO-3) mission at a NASA town hall. Credit: NASA

  • 01:49 New When Cool Science Gets Positively COLD

    When Cool Science Gets Positively COLD

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    The new Cold Atom Lab (CAL) facility could help answer some big questions in modern physics. CAL produces clouds of atoms that are ten billion times colder than deep space. The facility uses lasers and magnetic forces to freeze the atoms until they are al

  • 13:27 New Red Alert! Hawaii Volcano &  Florida & East Coast Flooding problems coming up

    Red Alert! Hawaii Volcano & Florida & East Coast Flooding problems coming up

    by admin Added 9 Views / 0 Likes

    Florida & the East Coast are looking at Major flooding over the next 10 days. Montana & Washington are also looking at major river flooding problems in the next week. and Hawaii's Kiluea volcano is on official aviation red alert due to an impending explos

  • 00:54 New Student-Built Rocket Breaks Sound Barrier - Watch It Launch

    Student-Built Rocket Breaks Sound Barrier - Watch It Launch

    by admin Added 7 Views / 0 Likes

    A sounding rocket built by students from New Mexico Tech that reached a maximum velocity of mach 1.27 (1.27X speed of sound). -- Full Story: https://www.space.com/40593-watch-supersonic-student-built-rocket-launch.htmlCredit: Space.com / footage courtesy

  • 01:28 Meet Orbital ATK's Fleet of Rockets

    Meet Orbital ATK's Fleet of Rockets

    by admin Added 8 Views / 0 Likes

    From Minotaur to OmegA, the private spaceflight company has a wide array of space launch vehicles to meet a variety of payload needs. Credit: Space.com / Orbital ATK / produced and edited by Steve Spaleta http://www.twitter.com/stevespaleta

  • 01:15 Science Launching to Space Station Looks Forward and Back

    Science Launching to Space Station Looks Forward and Back

    by admin Added 7 Views / 0 Likes

    Orbital ATK’s Cygnus spacecraft is scheduled to launch its ninth contracted cargo resupply mission to the space station no earlier than May 20. Science and research delivered by the spacecraft includes a test of centuries-old sextant navigation and forwar

  • 00:54 Watch Jupiter’s Clouds Move in Mesmerizing Animation

    Watch Jupiter’s Clouds Move in Mesmerizing Animation

    by admin Added 14 Views / 0 Likes

    Mathematician and software professional Gerald Eichstädt has used NASA Juno spacecraft imagery of Jupiter to extrapolate the movement of clouds on Jupiter. Learn more about it: https://www.space.com/40580-jupiter-swirling-clouds-juno-views.htmlCredit: Spa

  • 05:57 TBRC:  Hawaii Volcano could explode.  How to stop Lava? Historic Montana Floods,

    TBRC: Hawaii Volcano could explode. How to stop Lava? Historic Montana Floods,

    by admin Added 9 Views / 0 Likes

    Today's Big Risk Challenges - USA & Earth Mayday 14 2018Hawaii faces major risk of a major volcano blowing eruptionS & E Florida you are on Alert for Florids & Sinkholes next 2 weeks.Montana major river flood threat through the week.El Dercho tonight in N

  • 00:56 White Dwarf Star Orbits Pulsar at Record Speed - Animation

    White Dwarf Star Orbits Pulsar at Record Speed - Animation

    by admin Added 8 Views / 0 Likes

    Two stars that could fit together in the distance between the Earth and Moon are in the midst of a super fast pirouette of epic proportions. -- Read More: https://www.space.com/40555-x-ray-pulsar-orbit-record-speed.htmlCredit: NASA Goddard Space Flight Ce

  • 01:50 Investigation Seeks to Create Self-Assembling Materials

    Investigation Seeks to Create Self-Assembling Materials

    by admin Added 8 Views / 0 Likes

    As we travel farther into space, clever solutions to problems like engine part malfunctions and other possible mishaps will be a vital part of the planning process. 3D printing, or additive manufacturing, is an emerging technology that may be used to cust

  • 01:38 What's a Block 5? SpaceX's Upgraded Falcon 9 Rocket Explained

    What's a Block 5? SpaceX's Upgraded Falcon 9 Rocket Explained

    by admin Added 8 Views / 0 Likes

    Prior to the maiden flight of the SpaceX Falcon 9 Block 5 rocket, the private spaceflight company explains how it differs from their previous rockets. -- See it launch & land: https://www.space.com/40545-spacex-new-falcon-9-rocket-launch-landing-success.h

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