Astronomy

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.

 

What is a Galaxy?
3rd June 2010Astronomy
Billions of galaxies populate our universe, each one a vast group of stars that exist together in space. We live in one of these galaxies called the Milky Way, named after the path of milky light that it stars make across the Earth's sky.
Binocular Astronomy
3rd June 2010Astronomy
Binoculars play a big part in astronomy for beginners and experienced amateurs alike. They are generally cheaper and much easier to use than telescopes and offer a broad range of what's on offer in the night's sky.
The Danjon Scale
2nd June 2010Astronomy
The Danjon Scale of Lunar Eclipse Brightness is a five-point scale useful for measuring the appearance and luminosity of the Moon during a lunar eclipse. It was proposed by André-Louis Danjon when he was measuring the Earthshine on the Moon.
Types of Nebula and Nebulae
8th May 2009Astronomy
A Nebula (or Nebulae plural) is a mixture of interstellar dust, hydrogen gas, helium gas and plasma. The name comes from the Latin meaning cloud.
Binary Stars
8th May 2009Astronomy
A binary star is a star system consisting of two stars orbiting around their common centre of mass. The brighter star is called the primary and the other is its companion star or secondary.
A Guide to Asterisms
30th April 2009Astronomy
Asterisms are patterns of stars (similar to constellations) that are either part of a constellation or entirely separate. They are as old as the constellations, and as well known, but are not recognised as official constellations.
Asteroids, Meteors and Comets
28th March 2009Astronomy
Asteroids, Meteors and Comets are cosmic visitors from the far reaches of space. Commonly grouped together as they are basically the same thing - rock and ice from deep space.
Spectroscopy and Spectrometry
27th March 2009Astronomy
Spectroscopy is the study of the interaction between energy and matter as a function of wavelength. Spectrometry is a technique used for the identification of elements through analysis of a spectrum.