Hello Steemians!
_________

Today I'm writing about the deep space!
 
http://puu.sh/tn4w7/7f43dad6bb.jpg
_________________________

It is also known as the outer space or just simply space.

http://puu.sh/tn51V/6138141980.jpg
______________________

In 350. BCE Aristotle made the horror vacui principle which suggested that "Nature abhors vacuum", that there is no absolute vacuum.

http://puu.sh/tn5Bp/e00d088f38.jpg
*Aristotle*
_____________


The deep space is the void between every object in the Universe that consists of a hard vacuum.

The research and observation show that in the most galaxies, 90 % of the mass accounts to dark matter, an unidentified type of matter.

The hard vacuum contains low density particles, mostly the plasma of hydrogen and helium, but it also contains electromagnetic radiation, dust particles, magnetic fields neutrinos and cosmic rays.

http://puu.sh/tn5oo/2661335b8b.jpg
__________________

The deep space has different regions which are defined by the atmospheres within them.

http://puu.sh/tn5Z5/9689f1ece9.jpg
*Aurora australis - Discovery, May 1991.*
__________________

The first region is the so called "Geospace" which extends from the atmosphere to the outer magnetic field of Earth.

http://puu.sh/tn67s/0b855ef849.jpg
*Geospace*
_____________________________

The next region is the Interplanetary medium, about which i have written a post not so long ago, it is the space between the objects in the Solar System.

https://img1.steemit.com/0x0/http://www.goes-r.gov/users/comet/basic/media/graphics/sunearth.jpg
_______________________

Up next is the Interstellar medium, the space between all the stars within a galaxy.

http://puu.sh/tn6kF/cc39cf68a6.jpg
_______________________________________________

Last but not least is the region called Intergalactic space, which is the space that is stretching through the wast distances between the galaxies in the Universe.

http://puu.sh/tn6tZ/136db801e8.jpg
____________________________________

The temperature of the outer space is set  by the background radiation of the Big Bang and has a base of -270°C.

http://puu.sh/tn6Aa/100ecf3cb3.jpg
__________________

The first man in the outer space, entering it's Geospace, was Yuri Gagarin in 1961.

http://puu.sh/tn6K2/6afd059fb0.jpg
*Yuri Gagarin - Sweden, 1964.*
__________________________________

Hope you enjoyed today's exploration of the deep space!
Stay tuned for more fun posts about the Universe!

_________________________________

*Sources:
https://en.wikipedia.org
https://www.walldevil.com
https://www.youtube.com
https://pwg.gsfc.nasa.gov
http://hottytoddy.com
http://www.universetoday.com
http://www.space.com
http://kingofwallpapers.com
http://www.storywarren.com
http://nasa.gov*
_______

Follow and support me on the @Steemizen project!
https://img1.steemit.com/0x0/http://puu.sh/sHpZJ/4318e65e14.png