11-18-2014, 07:23 PM
Guest
11-18-2014, 07:32 PM
And keep in mind that the "Observable Universe" is only estimated to be a small fraction of the Universe's total size. In fact, some think it stretches on for infinity. Incomprehensible.
11-18-2014, 07:45 PM
And crawling, on the planets face, Some insects, called the Human Race. Lost in time, and lost in space and meaning..............
11-18-2014, 07:57 PM
It's all a hoax.
11-18-2014, 07:59 PM
wow I always though of comets as much smaller, maybe skyscraper size at most, didnt know it was that much.
Reminds me of this old gif
![[Image: plTDOv4.gif]](http://i.imgur.com/plTDOv4.gif)
Reminds me of this old gif
![[Image: plTDOv4.gif]](http://i.imgur.com/plTDOv4.gif)
11-18-2014, 08:31 PM
And people don't think that there are aliens out there...
11-18-2014, 08:33 PM
Quote:And people don't think that there are aliens out there...Ha. I'm usually one of those. But, by the time this one went two stages beyond our solar system, I started to doubt my convictions.
11-18-2014, 09:25 PM
11-18-2014, 09:56 PM
Quote:http://youtu.be/SpkSeVgvA0o
That's amazing. And you know what makes it like 80 billion times more believable?
This guy:
https://www.youtube.com/watch?v=7ISe0fdoaPs
11-18-2014, 10:02 PM
Quote:It's all a hoax.
<a class="bbc_url" href='http://en.m.wikipedia.org/wiki/Holographic_principle'>http://en.m.wikipedia.org/wiki/Holographic_principle</a>
11-19-2014, 02:14 AM
Quote:It's a big, big universe, friends.
Thanks for posting!
<a class="bbc_url" href='http://www.buzzfeed.com/daves4/the-universe-is-scary'>http://www.buzzfeed.com/daves4/the-universe-is-scary</a>
Quote:<a class="bbc_url" href='http://en.m.wikipedia.org/wiki/Holographic_principle'>http://en.m.wikipedia.org/wiki/Holographic_principle</a>
What the what?
11-19-2014, 10:23 AM
Quote:What the what?Its all right here
Quote:The holographic principle is a property of string theories and a supposed property of quantum gravity that states that the description of a volume of space can be thought of as encoded on a boundary to the region—preferably alight-like boundary like a gravitational horizon. First proposed by Gerard 't Hooft, it was given a precise string-theory interpretation by Leonard Susskind who combined his ideas with previous ones of 't Hooft and Charles Thorn. As pointed out by Raphael Bousso, Thorn observed in 1978 that string theory admits a lower-dimensional description in which gravity emerges from it in what would now be called a holographic way.
Simple really. :thumbsup:
11-19-2014, 10:36 AM
Quote:Its all right here
Simple really. :thumbsup:
The holographic principle is a property of string theories and a supposed property of quantum gravity that states that the description of a volume of space can be thought of as encoded on a boundary to the region—preferably alight-like boundary like a gravitational horizon. First proposed by Gerard 't Hooft, it was given a precise string-theory interpretation by Leonard Susskind who combined his ideas with previous ones of 't Hooft and Charles Thorn. As pointed out by Raphael Bousso, Thorn observed in 1978 that string theory admits a lower-dimensional description in which gravity emerges from it in what would now be called a holographic way.
Sometimes I wonder if some of these cosmological theories put forth by theoretical physicists gain acceptance by being completely incomprehensible to the point that other theoretical physicists endorse them in order to avoid admitting they don't understand them at all.
11-19-2014, 11:25 AM
Quote:Sometimes I wonder if some of these cosmological theories put forth by theoretical physicists gain acceptance by being completely incomprehensible to the point that other theoretical physicists endorse them in order to avoid admitting they don't understand them at all.
Stephen Hawking Laughs at you HAHAHAHAHAHAHAHAHAHA
11-19-2014, 11:43 AM
Quote:Stephen Hawking Laughs at you HAHAHAHAHAHAHAHAHAHA
11-19-2014, 11:46 AM
You know what gets me is how do we get pictures of the entire galaxy if it's so far away? Or are those not actual pictures?
11-19-2014, 11:47 AM
Quote:You know what gets me is how do we get pictures of the entire galaxy if it's so far away? Or are those not actual pictures?
Not sure I'm following you?
11-19-2014, 02:26 PM
Quote:You know what gets me is how do we get pictures of the entire galaxy if it's so far away? Or are those not actual pictures?
HOW IT WORKS
<div>Light Path through Hubble
<div>
![[Image: telescope_essentials_howworks2.jpg]](http://hubblesite.org/the_telescope/hubble_essentials/graphics/telescope_essentials_howworks2.jpg)
Enlarge diagram
</div>
</div>
Every 97 minutes, Hubble completes a spin around Earth, moving at the speed of about five miles per second (8 km per second) — fast enough to travel across the United States in about 10 minutes. As it travels, Hubble's mirror captures light and directs it into its several science instruments.
Hubble is a type of telescope known as a Cassegrain reflector. Light hits the telescope's main mirror, or primary mirror. It bounces off the primary mirror and encounters a secondary mirror. The secondary mirror focuses the light through a hole in the center of the primary mirror that leads to the telescope's science instruments.
People often mistakenly believe that a telescope's power lies in its ability to magnify objects. Telescopes actually work by collecting more light than the human eye can capture on its own. The larger a telescope's mirror, the more light it can collect, and the better its vision. Hubble's primary mirror is 94.5 inches (2.4 m) in diameter. This mirror is small compared with those of current ground-based telescopes, which can be 400 inches (1,000 cm) and up, but Hubble's location beyond the atmosphere gives it remarkable clarity.
Once the mirror captures the light, Hubble's science instruments work together or individually to provide the observation. Each instrument is designed to examine the universe in a different way.
The Wide Field Camera 3 (WFC3) sees three different kinds of light: near-ultraviolet, visible and near-infrared, though not simultaneously. Its resolution and field of view are much greater than that of Hubble's other instruments. WFC3 is one of Hubble's two newest instruments, and will be used to study dark energy and dark matter, the formation of individual stars and the discovery of extremely remote galaxies previously beyond Hubble's vision.
The Cosmic Origins Spectrograph (COS), Hubble's other new instrument, is a spectrograph that sees exclusively in ultraviolet light. Spectrographs acts something like prisms, separating light from the cosmos into its component colors. This provides a wavelength "fingerprint" of the object being observed, which tells us about its temperature, chemical composition, density, and motion. COS will improve Hubble's ultraviolet sensitivity at least 10 times, and up to 70 times when observing extremely faint objects.
The Advanced Camera for Surveys (ACS) sees visible light, and is designed to study some of the earliest activity in the universe. ACS helps map the distribution of dark matter, detects the most distant objects in the universe, searches for massive planets, and studies the evolution of clusters of galaxies. ACS partially stopped working in 2007 due to an electrical short, but was repaired during Servicing Mission 4 in May 2009.
The Space Telescope Imaging Spectrograph (STIS) is a spectrograph that sees ultraviolet, visible and near-infrared light, and is known for its ability to hunt black holes. While COS works best with small sources of light, such as stars or quasars, STIS can map out larger objects like galaxies. STIS stopped working due to a technical failure on August 3, 2004, but was also repaired during Servicing Mission 4.
The Near Infrared Camera and Multi-Object Spectrometer (NICMOS) is Hubble's heat sensor. Its sensitivity to infrared light — perceived by humans as heat — lets it observe objects hidden by interstellar dust, like stellar birth sites, and gaze into deepest space.
Finally, the Fine Guidance Sensors (FGS) are devices that lock onto "guide stars" and keep Hubble pointed in the right direction. They can be used to precisely measure the distance between stars, and their relative motions.
All of Hubble's functions are powered by sunlight. Hubble sports solar arrays that convert sunlight directly into electricity. Some of that electricity is stored in batteries that keep the telescope running when it's in Earth's shadow, blocked from the Sun's rays.
http://hubblesite.org/the_telescope/hubble_essentials/
11-19-2014, 02:49 PM
11-19-2014, 06:49 PM
Quote:Not sure I'm following you?
The pictures they get of looking from the outside back at our solar system are those legit pictures or projections of what we think it looks like?