Favourite posts

I’ve listed below a selection of my posts, which have attracted the most interest amongst my readers and  which I’ve enjoying writing the most. To view any of these posts please click on the links.

How does GPS work?

The anthropic principle – the idea  that the laws of physics, and the properties of the Universe as a whole, are somehow finely tuned to allow our existence.

Geocentric cosmology  – the obsolete model in which the Earth is the the centre of the Universe and all the planets and stars revolve around it.

October 4 1957 the start of the ‘space age’ with the launch of the first artificial satellite Sputnik 1.

Leap Seconds – the need to periodically add a second to keep accurate clocks in line with solar time.

The cosmic microwave background

The Perseids – the regular meteor shower which occurs around August 12 each year.

Why is the sky blue?

A brief history of the Universe – an outline history of the Universe from the Big Bang until the the present day. This, as I am sure you’ll agree, is a pretty big topic!

Enceladus- Could there be life?  Discusses the likelihood of life on Saturn’s moon Enceladus.