ExpertAverage RatingsExpertise

Harry Hayfield

Particular expert in eclipses (both solar and lunar), but able to answer most questions about astronomy or refer to a website that can help

Philip Stahl

I have more than 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 pertaining to sunspot morphology and flare geo-effectiveness.

James Gort

Questions on observational astronomy, optics, and astrophysics. Specializing in the evolution of stars, variable stars, supernovae, neuton stars/pulsars, black holes, quasars, and cosmology.

Paul Wagner

Astronomy and telescope making. Have made at least seven telescopes, both refractors and reflectors, and have spent 30 years looking at the nighttime sky.

Patrick Weiler

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.,.

Recent Answers

2014-11-19 astrophysics:

Hello,    In answer to your first question, there was no collision with a space rock, the star collapsed on its own and became a neutron star - not a black hole. This neutron star (google) is about 20

2014-11-12 Jason 313 Discoverer Telescope:

HI Laura    That's a bit of a problem.  They don't sell these tripods separately, and there is reason for that--they don't work very well.  But that doesn't mean you are completely out of luck.     One

2014-11-06 reflecting telescope problems:

HI Liz     OK--I have only one other suggestion.  Make sure that you are using the lowest possible magnification when you are looking for/at these objects.  The Orion Nebula is almost the size of the moon

2014-11-05 reflecting telescope problems:

Hi Liz    It may be your expectations.  In your scope you won't see vast clouds of stars.  What you'll see is best described as a "dim fuzzy" ball of cotton. My guess is that you are seeing these, but

2014-11-04 Beginner Astronomy:

Hi Sandy     This is a tough one, because the more you pay, the better the telescope.  And $100 is just about the entry level for a scope.  The best source for this type of scope is probably Orion--and

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