BackyardAstronomer.com is the personal astronomy site of Paul Mortfield, a Canadian astronomer and computer scientist with a background in solar research. Mortfield collaborated with Stanford University's Solar Observatories Group on NASA's SOHO Solar spacecraft and continues working with NASA scientists. He chairs the Solar Division of the American Association of Variable Star Observers (AAVSO), whose members have computed the American Relative Sunspot number for over 60 years.
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Authority
55/100
Safety
90/100
Registered
May 13, 1997
29 years old · Network Solutions, LLC
All 5 safety checks passed (Sep 8, 2026).
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What AboutUs observed on the live site and in WHOIS/DNS today. These are measurements, not an endorsement of the site.
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Domain registered May 13, 1997 — 29 years old.
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Registrar today: Network Solutions, LLC — unchanged since AboutUs began tracking (Jul 21, 2026).