Alphastro aims to present an up-to-date view of the Universe using specially written web pages and links to other Internet sites that are regularly updated. In addition to providing the latest facts, Alphastro is building up a search tool of Internet resources about astronomy and spaceflight.
How many moons has Jupiter?
A simple enough question - but the answer depends on the age of the reference book. Ask Galileo in 1610 and he would have said four. With the improvement of the telescope, the number of discoveries increased until at the dawn of the Space Age it was known that the Giant Planet had 12 moons. After the flypast of Voyager more moons were discovered bringing the total to 16 by 1980. Subsequent discoveries now record 28 moons around Jupiter.
Astronomy books can quickly become out of date with the pace of new discoveries in our Solar System and elsewhere in the universe. The Internet is able to keep up, but if you visit a website that has not been updated recently, it too, can show old information.
The aim of Alphastro is to present an up to date picture of Astronomy and space research. Moreover, it has links to the best maintained websites, current books (which you can buy online) and references to hardcopy magazines.
To get started on this website click on any of the links below; or if you prefer a frames site with an easy to use navigation bar on the left, click here.
The Structures of the Universe page is an ideal starting point for casual visitors. It describes astronomical phenomena without any technical jargon.
Alphastro aims to present an up-to-date view of the Universe using specially written web pages and links to other Internet sites that are regularly updated. In addition to providing the latest facts, Alphastro is building up a search tool of Internet resources about astronomy and spaceflight.
The Alphastro Home Page is http://www.alphastro.com and is operated by Lindoponline