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Pretty as a pink partially eclipsed Moon!
Reports of the total lunar eclipse which occurred on 14 March 2025, as seen from eastern Australia.

Sydney City Skywatchers 130-year Anniversary
130th anniversary of astronomy society highlights

Louise Webster (1941-1990): the first astronomer to identify a black hole.
Celebrating Australian women in astronomy on International Womens Day

Solar activity this month: February 2025
Our active Sun in February 2025


Bessel to Gaia: Parallax comes full circle
Königsberg Observatory (left) where Friedrich Wilhelm Bessel made the first successful distance measurement to a star other than the Sun...


How do we know that the universe is expanding and accelerating?
A short explanation An image from a video visualisation of the expanding and accelerating universe ( Credit : NASA's Goddard Space Flight...

Astronomy videos
See below for my astronomy videos that I have created over the last 2-3 years. Episode 1 - Comets Episode 2 - Black Holes Episode 3 -...

Vale Les Dalrymple (1962 - 2024)
By Jeff Portelli Les Dalrymple was passionate about astronomy, and an exceptionally knowledgeable and experienced amateur astronomer. He...

Our active Sun! July 2024
Sydney City Skywatchers member Garry Dalrymple has been observing sunspot activity lately with a small aperture telescope fitted with a...

How Good is your Night Sky?
An easy-to-use walk around guide. By Garry P. Dalrymple The visibility of the stars and the planets is a restriction placed on all of us...
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