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- Transcript of video accompanying photo release STScI-PRC95-01
- 9:00 A.M. MST, January 11, 1995
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- TEXT SCREENS:
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- AT THE AMERICAN ASTRONOMICAL SOCIETY MEETING IN TUCSON, ARIZONA
- PROFESSOR PATRICK HARRINGTON PRESENTED AN IMAGE OF THE CATS EYE
- PLANETARY NEBULA (NGC 6543) TAKEN WITH NASA'S HUBBLE SPACE
- TELESCOPE'S WIDE FIELD PLANETARY CAMERA.
-
- NGC 6543 IS 3,000 LIGHT YEARS AWAY IN THE NORTHEN CONSTELLATION
- DRACO. THE HUBBLE IMAGE IS A COLOR COMPOSITE IMAGE OF THREE IMAGES
- TAKEN AT DIFFERENT WAVELENGTHS.
-
- HUBBLE REVEALS INTRICATE STRUCTURES SUCH AS CONCENTRIC GAS SHELLS,
- JETS OF HIGH SPEED GAS, AND UNUSUAL SHOCK-INDUCED KNOTS OF GAS. THE
- NEBUA IS ESTIMATED TO BE 1,000 YEAR OLD AND IS A FOSSIL RECORD OF
- THE DYNAMICS AND LATE EVOLUTION OF DYING STAR.
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- PATRICK HARRINGTON
- ASTRONOMY DEPARTMENT
- UNIVERSITY OF MARYLAND
-
- ON WHAT IMAGE TELLS US ABOUT OUR FUTURE
-
- sot:
- "Because this represents the last stages in the evolution of
- ordinary stars, a star like our sun is going to go through an
- episode of this sort in maybe five or six billion years from now.
- So, in some sense when we look at an object like this we are
- looking at the future of our own solar system."
-
- slate:
- PAT HARRINGTON ON WHAT HAPPENED ANY PLANETS AROUND THIS STAR
-
- sot:
- "If this star had planets they would have vaporized. They are not
- there anymore."
-
- slate:
- PAT HARRINGTON ON WHAT HE THOUGHT WHEN HE FIRST SAW THE IMAGE
-
- sot:
- "It was clearly the best image of a planetary nebula I had ever
- seen. I remember saying we had to stop and get some champagne
- because this is a spectacular image."
-
- slate:
- PAT HARRINGTON ON THE BEAUTY OF THE IMAGE
-
- sot:
- "I think it is beautiful for the same reason it is interesting,
- which is all the symmetry in it."
-
- slate:
- PAT HARRINGTON EXPLAINS WHY IT IS THE BEST IMAGE OF A PLANETARY
- NEBULA
-
- sot:
- "I think this is the most exciting image of a planetary nebula that
- I have seen because of the level of complexity and detail that we
- see here. It's really quite impressive. Other objects are simply
- messy. But this one has got all sorts of fascinating structure."
-
- slate:
- PAT HARRINGTON EXPLAINS PLANETARY NEBULA
-
- sot:
- "Planetary nebula is sort of a misnomer, actually it's sort of a
- gas cloud. The fireworks that are produced when a fairly ordinary
- star reaches the end of its life and throws its outer layers into
- space. The reason they are called planetary nebula is because in
- the last century when people were using small telescopes some of
- the small round ones looked like the planets Uranus and Neptune in
- our solar system. Really it is the cloud of gas that is produced at
- the end of a star's lifetime."
-
- slate:
- PAT HARRINGTON EXPLAINS THE IMAGES DETAILS
-
- sot:
- What we see here is a record of a multi-stage process. The actual
- loss of the outer layers of the star turns out to be enormously
- complicated. We can see that at the present time, the star is
- blowing a bubble. It has a wind which is flowing rapidly into
- space. And this tenuous, fast wind is sweeping up the nebula
- material and constructing a bubble. Outside of that we see this
- ring of knots, which must correspond to some earlier stage of
- ejection and further, beyond the boundary of the picture that we
- see there is actually an outer halo. Further more the jets that we
- can see in of the image represents the very rapid phase of mass
- loss that occurs after the main structures that have formed. So its
- an extremely complex process."
-
- slate:
- PAT HARRINGTON ON WHAT ASTRONOMERS WILL LEARN FROM THE IMAGE
-
- sot:
- "For a specialist like my self there is an enormous amount of
- detail that is going to tell us about the kinds of elements that
- were created at the last stages of the stars life. Its going to
- tell us about the ejection process itself. It raises interesting
- questions about how these get from the last stages and change their
- direction suddenly. But from the point of view of the average
- person, you could say it's interesting because its a window on our
- own future. It tells us what is going to happen to a star like our
- sun in 5 or 6 billion years."
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- NASA'S HUBBLE SPACE TELESCOPE
- HAS OPENED A WINDOW ON OUR
- FUTURE WITH THIS IMAGE RELEASED
- AT THE AMERICAN ASTRONOMICAL
- SOCIETY MEETING IN TUCSON,
- ARIZONA. THE STRUCTURE OF THE
- CAT'S EYE PLANETARY NEBULA
- REVEALS TO ASTRONOMERS THE
- DEATH THROES OF A STAR LIKE OUR
- SUN.
- sot: "In some sense, when we
- look at an object like this we
- are looking at the future of
- our own solar system."
- OUR SOLAR SYSTEM WOULD BE A
- TINY SPEC IN THE ENORMOUS GAS
- CLOUD IMAGED BY HUBBLE. AND
- EARTH, LIKE ANY PLANETS THIS
- STAR MIGHT HAVE HAD, WOULD BE
- VAPORIZED. ASTRONOMERS WILL
- CONTINUE TO STUDY THE DETAILED
- STRUCTURE OF THE HUBBLE IMAGE
- TO LEARN MORE ABOUT THE
- EVOLUTIONARY PROCESS OF SUN
- LIKE STARS.
-