Here Are Some Of My Cosmology Collection Items

Definitions: Cosmology (from Greek κοσμολογία - κόσμος, kosmos, "universe"; and -λογία, -logia, "study") is the study of the Universe in its totality. The word astronomy (from the Greek words astron (ἄστρον), "star" and -nomy from nomos (νόμος), "law" or "culture") literally means "law of the stars" (or "culture of the stars" depending on the translation). Astrophysics (Greek: Astro - meaning "star", and Greek: physis – φύσις - meaning "nature") is the branch of astronomy that deals with the physics of the universe, including the physical properties (luminosity, density, temperature, and chemical composition) of celestial objects such as galaxies, stars, planets, exoplanets, and the interstellar medium, as well as their interactions. The study of cosmology is theoretical astrophysics at scales much larger than the size of particular gravitationally-bound objects in the universe. Astronomy refers to the study of objects and matter outside the Earth's atmosphere and of their physical and chemical properties and Astrophysics refers to the branch of astronomy dealing with "the behavior, physical properties, and dynamic processes of celestial objects and phenomena".

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Here Are Some Of My Favorite Cosmology Videos

1920x1080-Eyes-On-The-Skies-400-Years-Of-Telescopic-Discovery-2009-1HR-2GB.avi
1920x1080-Hubble-Cast-1-31-2009-3HR-7GB.avi
1280x720-Discovery-Channels-100-Greatest-Discoveries-Astronomy-2004-44MIN-1GB.avi
1280x720-Nasa-Space-Shuttle-Launch-6MIN-479MB.avi
1280x720-History-Channel-The-Universe-Season1-2007-11HR-24GB.rar
1280x720-Saturn-Quadruple-Transit-30sec-4MB.avi
1024x576-When-We-Left-Earth-5HR-10GB.avi
768x576-Hubble-15-Years-Of-Discovery-2005-2HR-4GB.avi
688x432-National-Geographic-Hubbles-Final-Frontier-2009-47MIN-742MB.avi
656x384-BBC-The-Planets-2000-6HR-5GB.avi
640x464-Imax-Destiny-In-Space-1994-40MIN-744MB.avi
640x368-Discovery-Channel-Hubble-Secrets-From-Space-1998-52MIN-418MB.avi
640x360-The-Ends-Of-The-Universe-Hubble's-Final-Chapter-2009-43MIN-682MB.avi
624x352-History-Channel-The-Universe-Season-2-6GB-13HR.rar
624x352-History-Channel-The-Universe-Season-3-4GB-9HR.rar
512x384-TTC-Video-Dark-Matter-Dark-Energy-2007-12HR-4GB.rar
480x360-Nasa-What-Is-A-Planet-2008-7MIN-38MB.avi
384x272-Stephen-Hawkings-Universe-1997-5HR-2GB.avi

Here Are Some Of My Favorite Cosmology Images

Download my 163 1920x1080 Cosmology Wallpapers by clicking here
Or view them first by clicking here

cosmology-Black-Hole-At-Galactic-Center.gif

cosmology-Hubble-Ultra-Deep-Field-6200x6200-15MB.jpg
cosmology-Hubble-Ultra-Deep-Field-6200x6200-109MB.tif

cosmology-Gravitational-Lensing-01-2316x1616-1.89MB.jpg

cosmology-Gravitational-Lensing-02-3000x2400-965K.jpg

cosmology-Gravitational-Lensing-Dark-Matter-03-1440x1080-562K.jpg

cosmology-Electromagnetic-Spectrum-01-768x531-112K.jpg

cosmology-Redshift-Example-768x435-101KB.jpg

cosmology-Great-Observatories-Program-1920x1080-995K.jpg

cosmology-1280x720-Saturn-Quadruple-Transit-30sec-4MB.avi

Important Events In Cosmology

140 Ptolemy suggests geocentric theory of the universe.
1543 Copernicus publishes his heliocentric theory of the Universe.
1608 Hans Lippershey invents the refracting telescope.
1609 Galileo uses telescope for astronomical purposes.
1609 Kepler's First and Second Laws of Planetary Motions are announced.
1619 Kepler's Third Law announced. Eliptical orbits proved
1668 Newton builds the first reflecting telescope.
1675 Ole Romer measures the speed of light. 299,792,458 metres per second
1687 Newton publishes his theory of universal gravitation.
1705 Halley correctly predicts the return of a comet.
1842 Christian Doppler Discovers the "Doppler Effect" important for measuring distance.
1860 William Huggins beginning of spectral analysis of stars.
1869 Mendeleev invents the periodic table. Today containing 117 known elements
1905 Einstein's Special Theory Of Relativity.
1916 Einstein's General Theory Of Relativity.
1922 Freidmann's equation relates energy density, expansion rate and space curvature.
1923 Hubble shows galaxies exist outside the Milky Way galaxy resizing the known Universe.
1931 Hubble, Einstein and Lemaitre collaborate early big bang theory aspects.
1931 Karl Jansky discovers cosmic radio waves.
1965 CMB-Cosmic Microwave Background eventually confirming big bang and dark matter.
1976 Viking probes land on Mars.
1990 Hubble Space Observatory launched.
1991 Compton Gamma Ray Space Observatory launched.
1992 Friedman measures the speed the Universe is expanding 72km/sec/Mpc.
1995 1st planet orbiting an alien star discovered 51 Pegasi b.
1998 Accelerating universe confirmed.
1999 Chandra X-ray Space Observatory launched.
2000 Boomerang experiment in Antartica confirms universe is spacially flat.
2003 GALEX Ultraviolet Space Observatory launched.
2003 Spitzer Infrared Space Observatory launched.

Planetary Facts

Planet	Size km	Diameter x Earth's	Mass kg	Mass x Earth's	Gravity x Earth's	Solar Distance 1 A.U.= 150M km or 93M mi	Orbit Time Yrs/Days	Orbital Speed km/s
Mercury	4,880	0.38	3.302 x 10-23	0.06	0.38	0.39	0.2108/87.97	47.90
Venus	12,104	0.95	4.868 x 10-24	0.82	0.91	0.72	0.6152/224.70	35.00
Earth	12,742	1.00	5.974 x 10-24	1.00	1.00	1.00	1/365.2564	29.79
Mars	6,780	0.53	6.418 x 10-23	0.11	0.38	1.52	1.8808/686.98	24.10
Jupiter	139,822	11.21	1.899 x 10-27	317.80	2.14	5.20	11.86	13.10
Saturn	116,464	9.45	5.685 x 10-26	95.16	0.91	9.54	29.37	9.64
Uranus	50,724	4.01	8.682 x 10-26	14.53	0.86	19.18	84.02	6.83
Neptune	49,248	3.88	1.024 x 10-26	17.15	1.10	30.06	164.79	5.50
Pluto	2,274	0.18	1.310 x 10-22	0.00	0.08	39.53	247.92	4.70

Planet	Rotation Speed Days/Hrs	Tilt in °	Moons	Temp C min/max	Temp F min/max
Mercury	58.646/?	0.50 °	0	-173/427 C	-279/801 F
Venus	R 243.01/?	177.40 °	0	462 C	864 F
Earth	1.00/24	23.45 °	1	-88/58 C	-126/136 F
Mars	1.026/?	25.19 °	2	-87/-5 C	-125/23 F
Jupiter	0.414/9.925	3.12 °	62	-148 C	-234 F
Saturn	0.444/10.656	26.73 °	62	-178 C	-288 F
Uranus	R 0.718/17.24	97.86 °	27	-216 C	-357 F
Neptune	0.671/16.11	29.56 °	13	-214 C	-353 F
Pluto	R 6.387/153.3	122.52 °	3	-233 C	-387 F

Planet	Atmospheric Pressures	Atmospheric Composition
Mercury	?	42% O, 22% Na, 6%He
Venus	9300 Kp	96% CO2, 3% N2,
Earth	101 Kp	78% N2, 20% O2, 0.934% Ar, 0.035% CO2, H2O variable
Mars	0.8 Kp	95% CO2, 2.7% N2, 1.6% Ar
Jupiter	200 Kp	89% H2, 11% He, 0.2% CH4, 0.02% NH3
Saturn	140 Kp	96% H2, 3% He, 0.3% CH4, 0.01% NH3
Uranus	?	82% H2, 15% He
Neptune	?	80% H2, 19% He
Pluto	?	?% CH4, ?% N2

Interesting Cosmology Facts

The earth Wobbles in several different ways on its axis. Once every 433 days or 1.2 years known as the Chandler Wobble. Once every 26,000-41,000 years which is believed to complete a cycle at the end of the year 2012. These wobbles of the earth's axis is thought to be the result of a combination of earth's liquid core and solid top layer, the irregular shape of the earth, the gravity of everything in the solar system pulling on earth including the sun, moon, and jupiter, the irregular and eliptical orbits of the solar system, and the cycles of the sun including it's own axis tilt and wobble, 22 year solar flair/magnetic cycle and its rotation period difference 25 days at its equator and 35 days near it's poles.