Learn the basics of astronomy with historical background and an introduction to the basic astronomy concepts, details about planets, satellites, asteroids, comets and meteors. Also learn the history of Astronomy from its origins in the religious, mythological, and astrological practices of prehistory through to modern astronomy.


Kuiper Belt
28th March 2013Astronomy
The Kuiper belt is an area of the solar system extending from the orbit of Neptune (at 30 AU) to 50 AU from the Sun. The objects within the Kuiper Belt together with the members of the scattered disk extending beyond are collectively referred to as trans-Neptunian objects.
Glossary of Astronomy & Photographic Terms
28th March 2013Astronomy
Use this Astronomical Terms Glossary to look up the many technical terms and definitions that you may be unfamiliar with in astronomy.
The Lagrange Points
9th February 2011Astronomy
Lagrange Points are five special points where an object can orbit at a fixed distance from two larger mass such that the gravitational pull precisely equals the centripetal force.
Is there a Monster at the Centre of our Galaxy?
9th November 2010Astronomy
Scientists believe that at the centre of the Milky Way there lies an unknown compact entity believed to be a supermassive black hole.
Introduction to Astronomy
8th November 2010Astronomy
Astronomy is an endlessly fascinating field, the oldest of the natural sciences, and one of the few areas of science that amateurs can assist the professionals and contribute to science.
5th October 2010Astronomy
Quasars (QUAsi-Stellar Radio Source) is a very energetic and distant galaxy with an active galactic nucleus. They are the most luminous objects in the universe.
5th October 2010Astronomy
Pulsars are highly magnetised, rotating neutron stars that emit a beam of electromagnetic radiation. The radiation can only be observed when the beam of emission is pointing towards the Earth. This is called the lighthouse effect and gives rise to the pulsed nature that gives pulsars their name.
Supernova and Supernovae
5th October 2010Astronomy
Supernovae are extremely luminous and cause a burst of radiation that often briefly outshines an entire galaxy, before fading from view over several weeks or months.