What is Light Pollution and Why Should You Care?

If one is lucky enough to live in a rural location you can look up on a clear night and see the Andromeda Galaxy which is 2.5 million lightyears away. That isn’t true for those that live in, or close to a town, village or city. From the heart of a city, one would beContinue reading “What is Light Pollution and Why Should You Care?”

What Can I See in the Sky in March 2021?

The month of March is upon us which means it’s officially spring. The spring equinox occurs on 20th March. This is the time when the Sun crosses the celestial equator and the length of the day and night are equal. After this the nights will be shorter than the days. In Ireland, the clocks alsoContinue reading “What Can I See in the Sky in March 2021?”

Perseverance’s 7 Minutes of Terror

This Thursday (18th Feb), if everything goes smoothly, NASA’s Perseverance Rover will touch down on the surface of Mars. The landing sequence required to get it safely to the surface is like something from science fiction. It is a complex landing sequence, made all the more difficult by the fact that real time communication withContinue reading “Perseverance’s 7 Minutes of Terror”

Ground Based Optical Telescopes

Small amateur telescopes are great for exploring the night sky from our gardens, but what tools do professional astronomers use to explore the universe? The truth is that they use a wide variety of ground based telescopes, space based telescopes as well as other experiments and detectors such as gravitational wave detectors. This post willContinue reading “Ground Based Optical Telescopes”