Lunar eclipse 27 July 2018

On 27 July 2018 there will be a total eclipse of the Moon, which will be viewable from many areas of the world. This will be the first total lunar eclipse able to be observed in the UK for nearly three years and it will be worth making the effort to see, especially since, for… Continue reading Lunar eclipse 27 July 2018

June 21 2018 – the solstice

This year, the June solstice will fall on 21 June.  In the northern hemisphere, it is the day when there is the most daylight and when the Sun is at its highest in the midday sky.   Sunrise at the solstice at Stonehenge, England - image from Wikimedia commons The origin of the word solstice is… Continue reading June 21 2018 – the solstice

20 March 2018 – the equinox

Now that we are in the month of March, it is only a short time until 21 March, the first day of spring (or first day of autumn if you're one of my readers in the southern hemisphere). There is a commonly held view that 21 March is an equinox and that the equinoxes are the two… Continue reading 20 March 2018 – the equinox

Kepler’s other achievements

As discussed in my previous post, Kepler's improvement of Copernicus's heliocentric system led to its more general acceptance, and his three laws describing the way planets move are fundamental laws of astronomy. However, this wasn't his only contribution to science. He was one of the greatest thinkers of the seventeenth century scientific revolution and in… Continue reading Kepler’s other achievements

Johannes Kepler

My latest post is about the work of the German astronomer Johannes Kepler (1571-1630).  He is most famous for his improvement to the earlier model of Copernicus by introducing the idea that the planets move in elliptical, rather than circular, orbits and that their movements in these orbits are governed by a set of laws,… Continue reading Johannes Kepler

Geocentric Cosmology

Today it is generally accepted as a scientific fact that the Earth is one of eight planets which revolve around the Sun, that the Sun is one of 400 billion or so stars in our Milky Way galaxy and that the Milky Way is one of hundreds of billions of galaxies in the observable Universe.… Continue reading Geocentric Cosmology

Solar eclipse 21 August 2017 – America on the move

Around 200 million Americans live within a day's drive of the total eclipse path, the narrow band of territory from Oregon to South Carolina.  According to an article in The Atlantic, up to 7 million people, perhaps even people reading this, will travel to see Monday's total eclipse. They will join the 12 million who are… Continue reading Solar eclipse 21 August 2017 – America on the move