Hubble's View Of The Universe [Part 4]

Hubble's View Of The Universe [Part 4 of 10]

THE HUBBLE TELESCOPE

Hubble works on the same principle as the first reflecting telescope built in the 1600s by Isaac Newton. Light enters the telescope and strikes a concave primary mirror, which acts like a lens to focus the light. The bigger the mirror, the better the image.

In Hubble, light from the primary mirror is reflected to a smaller secondary mirror in front of the primary mirror, then back through a hole in the primary to instruments clustered behind the focal plane (where the image is in focus).

THE UNIVERSE

Hubble's longest exposures are like a core sample of the universe, recording galaxies at many different distances. This is one of the deepest core samples ever taken. It shows a few nearby stars in our Milky Way galaxy. The rest of the objects are distant galaxies, extending from 1 billion to over 10 billion light-years away.

STARS

Stars live and die over the course of millions to billions of years. It is unusual to see changes in individual stars. To learn more about them, we must piece together snapshots of stars at different life stages — from birth to death.

The birth, life, and rebirth of stars is an ongoing process in the universe. The byproducts of this process include planets and the elements that make life possible.

GALAXIES

Galaxies come in diverse shapes and sizes. NGC 4414 — which is located about 62 million light-years away — is an example of a spiral galaxy. As with most spirals, the central region of NGC 4414 contains primarily older, yellow and red stars. The outer spiral arms are considerably bluer due to ongoing formation of young, blue stars.

The stars form a flat disk that circles the nucleus — a disk we see tilted, so it doesn't appear flat. Spiral galaxies like NGC 4414 display beautiful spiral arms made up of millions of young stars.

http://hubblesite.org/

Part 5
http://www.youtube.com/watch?v=8Mv-K0OYYJE&v3

Category:

Howto & Style

Tags:

• Hubble
• Universe
• Astronomy
• Cosmos
• Stars
• Galaxies

[judyb1169]

That is really gorgeous!

[tenneral]

Not only truly beautiful to watch but the atmospheric music is exalting to the viewer. 5*

[EricSchwin22]

@faab007.... Maybe they have a really powerful telescope like ours, and they're like...."woa! There is a Blue planet!!! Cool!!!".

[Migoicons]

1:36 fuck you

[faab007]

We will always be unique because we will always be the ones that came from Earth, but it's awesome to think somewhere someone on some planet is asking the same questions as us.. what's all out there..

[ronfurg]

@kutubu1 To me it looks far more like the index finger pointing.

[eva16011]

je to neuvěřitelně krásné-díky za taková videa

[kutubu1]

beautiful! , funny detail: the cloud at 1.20 looks like a fist of the right hand with the middlefinger up

[DaddyCrip]

ey ey as far as we know (which is not a lot) we are the only survivalistic organisms found in universe and earth gave that opertunity so this ain't a bullshit planet, that we can actually observe these beatiful things.

No hard feelings about earth... (and do know we are unique)

[danStangtheGmanT]

It's hard to imagine all of the beauty and unknown out there, but we're stuck on this bullshit planet.

[HoffaToffla]

It is impossible that i it doesnt exist other life in universe :)

[earth2indy]

blah blah blah