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| Expert | Average Ratings | Expertise |
|---|---|---|
Paul WagnerAvailable
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Astronomy and telescope making. Have made at least seven telescopes, both refractors and reflectors, and have spent 30 years looking at the nighttime sky. | |
Harry HayfieldU.K.
Available
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Particular expert in eclipses (both solar and lunar), but able to answer most questions about astronomy or refer to a website that can help | |
James GortAvailable
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Questions on observational astronomy, optics, and astrophysics. Specializing in the evolution of stars, variable stars, supernovae, neuton stars/pulsars, black holes, quasars, and cosmology. | |
Patrick WeilerU.S.
Available
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I`d be pleased to answer questions about any aspect of astronomy, particularly those related to cosmology, astrophysics, and planetary sciences. I can also provide reliable information on unique topics like dark energy, dark matter, black holes, etc.,. | |
EdAvailable
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I am not a professional astronomer by any means, but astronomy has been an interest of mine since childhood, and I am well-informed on the subject. If unable to answer someone`s question personally, I will know how to quickly find the answer online, because I keep myself informed about developments in the field and I know where to look for information. | |
Philip StahlU.S.
On Vacation
returns 05/31/2012 |
I have forty years of experience in Astronomy, specifically solar and space physics. My specialties include the physics of solar flares, sunspots, including their effects on Earth and statistics as applied to astronomical investigations. | |
Tom WhitingU.S.
On Vacation
returns 05/26/2012 |
Astronomy has been my hobby/pasttime for over 50 years. Currently own 3 telescopes, the largest of which is a 30 inch Newtonian truss Dob that is portable.I taught Astronomy/Meteorology at the University Level for 13 years before retiring in 1995. Being retired and home most of the time, I am able to answer all questions relatively quickly, unless it's a new moon weekend with good observing conditions. No astrology questions please, or questions about alleged UFO picture identifications. |
Hi Jim This is a great question. Messier discovered all of these objects using only a three inch scope from the observatory in the heart of Paris. But that was before the days of electric lights
Hi Adrian I am not an astrophysicist, but this might help you. It wasn't just matter that came into being during the big bang; it was also space. So before the big bang, there was no space. And now
Hi J. The answer is - they haven't all been counted! There's just too many of them. Every photograph of deep space yields more and more - they often appear only as faint smudges, but they're still galaxies
Hi Glenn Focal length is not a really important part of a scope. A longer focal length gives you higher magnification and a narrower point of view---but a shorter focal length gives similar performance
Hello again... "...we cannot see an object disappear beyond the event horizon because from our local time, the time frame of the object has slowed to the point that it no longer moves, so it never reaches
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