Astronomy/Expert Profile

Average Ratings

• Knowledgeability 9.74
• Clarity of Response 9.26
• Timeliness 9.35
• Politeness 9.57

• Number of Questions (in Past 24 Hours) 0
• Max Questions to be Asked (in 24 Hour Period) 5
• Total Questions (since joining AllExperts) 490
• Volunteer Since 2002-01-17
• Prestige Points 4004

Recent Reviews from Users

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    K = Knowledgeability    C = Clarity of Response    T = Timeliness    P = Politeness

User	Date	K	C	T	P	Comments
Jared	09/19/09	10	10	10	10	Thank you so much. You helped me .....
Reg	08/12/09	10	10	10	10	Thank you very much.
Cameron	05/15/09	10	10	10	10
jerry	04/27/09	10	10	10	10	Thank you for a quick answer.
Ian	07/24/08	10	10	10	10	Thanks for the contact

Recent Answers from Harry Hayfield

2009-11-02 planet visible near moon:

If you are able to e-mail me a copy of the pictures (harryhayfield@googlemail.com) that would allow me to confirm the theory that you picked up the Pleiades (Seven Sisters) which is a group of stars that

2009-04-27 veiw of earth:

It depends entirely where you start from. Where I live you would have to be at least 7,500km above the surface. Someone living in Toronto would have to be at least 7,000km above the surface. Someone

2008-01-26 (some astronomy questions):

All answers based on Albany, NY: 058° from north, Days would double in length (i.e 48 hours instead of 24), the earth's rotation, because the sun is nearer the north pole and therefore gets more heat

2007-12-20 solar system:

Don't worry. You witter on! Our solar system was indeed formed by a solar nebula (when the sun erupted into life 4.6 billion years ago. There is actually a formula for estimating how many earth like

2007-12-16 solar eclipse:

Prespective! The sun has a diameter of 1.39 million km and is 149.6 million km from Earth. The moon has a diameter of 3,476km (400 times smaller) and is 384,400km from Earth (390 times nearer). Therefore