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Starry Messenger ~ This site is the first phase of the electronic history of astronomy, as developed in the UK for the University of Cambridge, under the auspices of the Department of History and Philosophy of Science. It pulls few punches when explaining how many key figures in astronomical history, were also keen astrologers too.
Stars ~ Think you know about stars? Jim Kaler is Professor Emeritus of Astronomy at the University of Illinois and one way or another since 1997, he has maintained this website as a fitting illustration of his knowledge and enthusiasm for all things celestial. The depth and scope of the information he provides is often staggering…
Stellar Classification ~ Stars can be categorised according to their spectral characteristics. The spectral class of a star describes the ionization of its photosphere and gives an objective measure of its temperature. What this means is that the colour of the star pinpoints how cool or hot it is, on a scale that runs from dark brown to blue and less than 700 K to over 33,000 K…
Sunspots in History ~ Sunspot activity follows an eleven year cycle. Many believe that major events can be correlated with the maxima and minima of these solar phenomena. Here you can enter your own birthday and find out whether this date coincided with important solar activity too. You’ll need Java enabled in your browser though.
The Aurora Page ~ If you are fascinated by the aurora phenomenon, those spectacularly beautiful displays of light seen otherwise in darkness and only from extreme latitudes, then this site is definitely for you. There is a great gallery of images, explanations of why an aurora occurs, plus links to further information.
The Constellations ~ Online since 1996 and still regularly updated, this site is the product of one man’s enthusiasm for astronomy and his eagerness to share his knowledge with the world. Of particular interest is the constellations table, which offers a detailed but user-friendly look at what lies in the zodiac belt and also beyond, mainly from the angle of a fascinated amateur.
The Digital Astrolabe ~ A useful and initially straightforward reference, for anybody wanting to know what is happening in the night sky presently. You can alter the latitude of your observations and even the date, for a clear idea when planets rise, set and culminate on the day concerned. Much of this site gets very technical, but it starts off beguilingly enough…
The-Moon Wiki ~ This expanding web resource aims to catalogue the features of the lunar landscape. You will find plenty of detailed information about our satellite including maps, data, photographs and links to other erudite studies of every peak, plain, depression and crater on the Moon’s surface. These go from a minor dent, to the South Pole-Aitken basin at 2,500 km across…
The Night Sky ~ I am viewing this site during August 2016 and looking at the monthly highlights. These come from Professor Ian Morison, of the Jodrell Bank Centre for Astrophysics at the University of Manchester. It is rare to see the events of each month spelled out so clearly from a UK perspective. This corner of cyberspace reminds me, of before the WWW was a shop.
The Nine Planets ~ A multimedia tour of the solar system. Quite simply one of the best astronomy sites you will find. Detailed, accurate, well presented and very readable. Need to know more about those planets whose effects we’re always considering as astrologers? Look no further than Bill Arnett’s site, it’s definitely an Internet institution!
The Planetary Society ~ Founded by Carl Sagan and friends, this is a non-profit-making organisation dedicated to the further exploration of space and then telling everybody about it all. Their site is a great source of information on all matters astronomical, such as the latest rumour that in August 2007 Mars will seem the size of the full moon…
The SunTracker ~ This program is part of Diduknow.info, a user-friendly gateway to the treasures of National Museums Liverpool. In the section covering space, time and sundials you’ll find the Suntracker, enabling you to simulate the passage of the Sun across the sky, from rise to set and from any location anywhere in the world.
The-universe.ie ~ Julie Ormonde wrote to me about her love for astronomy, the website she has put together and her efforts to build an astronomy group in the south-west of Ireland, where the skies she informs me are wonderfully dark. Although she promised me a return link that she never put up, why not drop by at Julie’s site and show you’re not so small-minded?
The Woman Astronomer ~ Anyone who has studied astrology will tell you about the overwhelming numbers of female students compared with their male counterparts. Female astronomers are a rarer breed and this site celebrates their achievements, with biographies of those who have made a name for themselves and links to help you find out more.
Tonight’s Sky ~ The York County Astronomical Society is based in Pennsylvania, USA. As a part of their mission to inform and educate they offer this synopsis of what makes good viewing each month, for astronomers old and new. Aimed at a North American audience, these insights are readily adapted to other locations. The sky is not a painting, it’s a movie they explain…
Torino Scale ~ The Torino Scale ranks the impact hazard of various comets and asteroids, together with the seriousness of collision predictions, by combining probabilities and known damage potentials. Level 3 is worrying, at Level 10 you may not get home for lunch. You’ll be relieved to hear at present, Level 1 is the highest that is currently assigned.
Total Lunar Eclipse - Live Webcast ~ The total lunar eclipse of April 15, 2014 was best seen from North America. Most of the world caught a glimpse, but to witness the main event, watch this live webcast from Arizona, with totality lasting just under 78 minutes. Since 2003, Slooh has connected land-based telescopes to the Internet, for access by people around the world…