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Astronomy vs Astrology – Best of Carl Sagan’s Cosmos (Part 15)

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• http://www.youtube.com/SagansCosmos
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BEST OF CARL SAGAN’S “COSMOS”:

1) 10 Years After: Carl Sagan & Ann Druyan Reflect:

2) Lost Between Immensity And Eternity:

3) The Realm Of The Galaxies:

4) Our Galaxy, The Milky Way:

5) Our Solar System:

6) Eratosthenes And The Round Earth Model:

7) The Library Of Alexandria:

A Short History Of The Universe:

9) Artificial And Natural Selection:

10) The Cosmic Year:

11) Tree Of Life – 4 Billion Years Of Evolution:

12) The Miracle Of Life:

13) DNA – The Common Basis Of Life:

14) Abiogenesis The Origin Of Life:

15) Astronomy vs Astrology:

16) Pictures In The Sky:

17) Ancient Astronomy:

18) Triumph Of Modern Science Over Medieval Superstition:

19) The Mysterious Tonguska Event:

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Carl Edward Sagan, Ph.D. (1934-1996) was an American astronomer, astrochemist, author, and highly successful popularizer of Astronomy, astrophysics and other natural sciences. He pioneered exobiology and promoted the Search for Extra-Terrestrial Intelligence (SETI).

He is world-famous for writing popular science books and for co-writing and presenting the award-winning 1980 television series “Cosmos: A Personal Voyage”, which has been seen by more than 600 million people in over 60 countries, making it the most widely watched PBS program in history.

A book to accompany the program was also published. He also wrote the novel “Contact”, the basis for the 1997 Robert Zemecki’s film of the same name starring Jodie Foster.

During his lifetime, Sagan published more than 600 scientific papers and popular articles and was author, co-author, or editor of more than 20 books. In his works, he frequently advocated skeptical inquiry, secular humanism, and the scientific method.

http://www.carlsagan.com

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Duration : 0:10:57

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The NASA/ESA Hubble Space Telescope has discovered an extrasolar planet, for the first time using direct visible-light imaging. The strange world is far-flung from its parent star, is surrounded by a colossal belt of gas and dust, and may even have rings more impressive than Saturn’s.

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Credit:
- ESA/Hubble (M. Kornmesser & L. L. Christensen)
- Visual design & Editing: Martin Kornmesser
- Animations: Martin Kornmesser & Luis Calçada
- Web Hosting: Leibniz-Rechenzentrum (LRZ)
- Web Technical Support: Lars Holm Nielsen & Raquel Yumi Shida
- Written by: Lee Pullen & Lars Lindberg Christensen
- Host: Dr. J
- Narration: Bob Fosbury
- Cinematography: Peter Rixner
- Music: movetwo
- Footage and photos: A. Fujii, Digitized Sky Survey 2, NASA, ESA, and P. Kalas (University of California, Berkeley). Acknowledgment: Davide De Martin (ESA/Hubble)
- Directed by: Lars Lindberg Christensen

Dr. J is a German astronomer at the ESO. His scientific interests are in cosmology, particularly on galaxy evolution and quasars. Dr. J’s real name is Joe Liske and he has a PhD in Astronomy.

Hubble European Space Agency Information Centre
Garching/Munich, Germany
• http://www.eso.org
• http://www.spacetelescope.org
• http://hubblesite.org
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Duration : 0:5:2

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—
Subscribe to Science & Reason:
• http://www.youtube.com/Best0fScience
• http://www.youtube.com/SagansCosmos
• http://www.youtube.com/FFreeThinker
—

BEST OF CARL SAGAN’S “COSMOS”:

1) 10 Years After: Carl Sagan & Ann Druyan Reflect:

2) Lost Between Immensity And Eternity:

3) The Realm Of The Galaxies:

4) Our Galaxy, The Milky Way:

5) Our Solar System:

6) Eratosthenes And The Round Earth Model:

7) The Library Of Alexandria:

A Short History Of The Universe:

9) Artificial And Natural Selection:

10) The Cosmic Year:

11) Tree Of Life – 4 Billion Years Of Evolution:

12) The Miracle Of Life:

13) DNA – The Common Basis Of Life:

14) Abiogenesis The Origin Of Life:

15) Astronomy vs Astrology:

16) Pictures In The Sky:

17) Ancient Astronomy:

18) Triumph Of Modern Science Over Medieval Superstition:

19) The Mysterious Tonguska Event:

—

Carl Edward Sagan, Ph.D. (1934-1996) was an American astronomer, astrochemist, author, and highly successful popularizer of Astronomy, astrophysics and other natural sciences. He pioneered exobiology and promoted the Search for Extra-Terrestrial Intelligence (SETI).

He is world-famous for writing popular science books and for co-writing and presenting the award-winning 1980 television series “Cosmos: A Personal Voyage”, which has been seen by more than 600 million people in over 60 countries, making it the most widely watched PBS program in history.

A book to accompany the program was also published. He also wrote the novel “Contact”, the basis for the 1997 Robert Zemecki’s film of the same name starring Jodie Foster.

During his lifetime, Sagan published more than 600 scientific papers and popular articles and was author, co-author, or editor of more than 20 books. In his works, he frequently advocated skeptical inquiry, secular humanism, and the scientific method.

http://www.carlsagan.com

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Duration : 0:8:58

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• http://www.youtube.com/Best0fScience
• http://www.youtube.com/ScienceMagazine
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► Eclipse over the Temple of Poseidon
The Moon moved to partly block the Sun for a few minutes last week as a partial solar eclipse became momentarily visible across part of planet Earth. In the above single exposure image, meticulous planning enabled careful photographers to capture the partially eclipsed Sun well posed just above the ancient ruins of the Temple of Poseidon in Sounio, Greece.
• http://antwrp.gsfc.nasa.gov/apod/ap100118.html

► Dust Sculptures in the Rosette Nebula
Noted for the common beauty of its overall shape, parts of the Rosette Nebula, also known as NGC 2237, show beauty even when viewed up close. Visible above are globules of dark dust and gas that are slowly being eroded away by the energetic light and winds by nearby massive stars. Left alone long enough, the molecular-cloud globules would likely form stars and planets. The Rosette Nebula spans about 50 light-years across and lies about 4,500 light-years away.
• http://antwrp.gsfc.nasa.gov/apod/ap091202.html

► Watch Jupiter Rotate
What would it be like to coast by Jupiter and watch it rotate? This was just the experience of the New Horizons spacecraft as it approached and flew by Jupiter. Visible above in the extensive atmosphere of the Solar System’s largest planet are bands and belts of light and dark clouds, as well as giant rotating storm systems seen as ovals. The robotic New Horizons spacecraft continues to speed toward the outer Solar System and has recently passed the halfway point between Earth and Pluto.
• http://antwrp.gsfc.nasa.gov/apod/astropix.html

► NGC 6992: Filaments of the Veil Nebula
Wisps like this are all that remain visible of a Milky Way star. About 7,500 years ago that star exploded in a supernova leaving the Veil Nebula, also known as the Cygnus Loop. At the time, the expanding cloud was likely as bright as a crescent Moon, remaining visible for weeks to people living at the dawn of recorded history. Today, the resulting supernova remnant has faded.
• http://antwrp.gsfc.nasa.gov/apod/ap091201.html

► Dark Sand Cascades on Mars
They might look like trees on Mars, but they’re not. Groups of dark brown streaks have been photographed by the Mars Reconnaissance Orbiter on melting pinkish sand dunes covered with light frost. The image was taken near the North Pole of Mars. At that time, dark sand on the interior of Martian sand dunes became more and more visible as the spring Sun melted the lighter carbon dioxide ice. When occurring near the top of a dune, dark sand may cascade down the dune leaving dark surface streaks — streaks that might appear at first to be trees standing in front of the lighter regions, but cast no shadows.
• http://antwrp.gsfc.nasa.gov/apod/ap100119.html

► Eclipses in the Shade
Eclipses are everywhere in this shady scene. The picture was taken on the Indian Ocean atoll island of Ellaidhoo, Maldives, in January 2010, during the longest annular solar eclipse for the next 1,000 years. Tall palm trees provided the shade. Their many crossed leaves created gaps that acted like pinhole cameras, scattering recognizable eclipse images across the white sands of a tropical garden near the beach. From this idyllic location near the centerline of the Moon’s shadow track, the ring of fire or annular phase of the eclipse lasted about 10 minutes and 55 seconds.
• http://antwrp.gsfc.nasa.gov/apod/ap100123.html

► Dust and the NGC 7771 Group
Some 200 million light-years distant toward the constellation Pegasus, NGC 7771 is the large, edge-on spiral near center, about 75,000 light-years across, with two smaller galaxies just below it. Large spiral NGC 7769 is seen face-on to the right. Galaxies of the NGC 7771 group are interacting, making repeated close passages that will ultimately result in galaxy-galaxy mergers on a cosmic timescale.
• http://antwrp.gsfc.nasa.gov/apod/ap100121.html

► Millennium Annular Solar Eclipse
The Moon’s shadow raced across planet Earth on January 15. Observers within the central shadow track were able to witness an annular solar eclipse as the Moon’s apparent size was too small to completely cover the Sun. A visually dramatic ring of fire, the annular phase lasted up to 11 minutes and 8 seconds depending on location, the longest annular solar eclipse for the next 1,000 years. This picture of the Moon’s silhouette just before mid-eclipse was taken within the eclipse path from the city of Kanyakumari at the southern tip of India.
• http://antwrp.gsfc.nasa.gov/apod/ap100122.html

► Himalayan Skyscape
Capella, alpha star of the constellation Auriga, rises over Mt. Everest in this panoramic view of the top of the world at night.
• http://antwrp.gsfc.nasa.gov/apod/ap091205.html
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“Improved Hubble Shows Evidence of Dark Matter”
• http://www.youtube.com/user/tdarnell#play/uploads/2/3wluv08tDhU [HD]
• http://www.deepAstronomy.com/

“When Hubble Opened its New Eyes”
• http://www.youtube.com/AndromedasWake
• http://www.youtube.com/watch?v=9bytNgT7l8k&fmt=22 [HD]

“The Hubble Space Telescope – Rebirth of an Icon (Hubblecast 30)”
• http://www.youtube.com/ESOcast
• http://www.youtube.com/watch?v=Hjy7YSIH-GI&fmt=22 [HD]

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The Hubble Space Telescope (HST) is a space telescope that was carried into orbit by the space shuttle in April 1990. It is named after the American astronomer Edwin Hubble. Although not the first space telescope, the Hubble is one of the largest and most versatile, and is well-known as both a vital research tool and a public relations boon for astronomy.

The HST is a collaboration between NASA and the European Space Agency, and is one of NASA’s Great Observatories, along with the Compton Gamma Ray Observatory, the Chandra X-ray Observatory, and the Spitzer Space Telescope.

Space Telescopes were proposed as early as 1923. The Hubble was funded in the 1970s, with a proposed launch in 1983, but the project was beset by technical delays, budget problems, and the Challenger disaster. When finally launched in 1990, scientists found that the main mirror had been ground incorrectly, severely compromising the telescope’s capabilities.

However, after a servicing mission in 1993, the telescope was restored to its intended quality. Hubble’s orbit outside the distortion of Earth’s atmosphere allows it to take extremely sharp images with almost no background light. Hubble’s Ultra Deep Field image, for instance, is the most detailed visible-light image ever made of the universe’s most distant objects. Many Hubble observations have led to breakthroughs in astrophysics, such as accurately determining the rate of expansion of the universe.

The Hubble is the only telescope ever designed to be serviced in space by astronauts. There have been five servicing missions, the last occurring in May 2009. Servicing Mission 1 took place in December 1993 when Hubble’s imaging flaw was corrected. Servicing missions 2, 3A, and 3B repaired various sub-systems and replaced many of the observing instruments with more modern and capable versions.

However, following the 2003 Space Shuttle Columbia accident, the fifth servicing mission was canceled on safety grounds. After spirited public discussion, NASA reconsidered this decision, and administrator Mike Griffin approved one final Hubble servicing mission. STS-125 was launched in May 2009, and installed two new instruments and made numerous repairs.

The latest servicing should allow the telescope to function until at least 2014, when its successor, the James Webb Space Telescope (JWST), is due to be launched. The JWST will be far superior to Hubble for many astronomical research programs, but will only observe in infrared, so it will complement (not replace) Hubble’s ability to observe in the visible and ultraviolet parts of the spectrum.

• http://en.wikipedia.org/wiki/Hubble_Space_Telescope
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Duration : 0:6:46

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