The Future of humanity

As described in my previous post (The Future of the Sun), in about 5 billion years time the Sun will swell up to at least 100 times its current diameter and this will make the surface of the Earth far too hot to sustain life. What Sunrise might look like when the Sun is a red… Continue reading The Future of humanity

The Future of the Sun

The Sun is the star at the centre of our Solar System and its sunlight provides energy which is essential for life on Earth. The two key natural units of measuring periods of time, the year and the day, are both based upon the Earth's motion with respect to the Sun and in many ancient cultures… Continue reading The Future of the Sun

Dark Energy Over Time

This post continues the subject of dark energy, which, as discussed in my previous post is a mysterious form of energy which makes up about 68 per cent of the mass of the Universe and is the reason why the Universe is expanding at an ever-faster speed. This post will discuss how the percentage of dark energy changes over time… Continue reading Dark Energy Over Time

The Shortest Day

As I write this post, it's completely dark outside and it's only 5 o'clock in the afternoon. Today is 4 December, and most people I come across think that it will continue to get dark earlier and earlier in the afternoons until 21 December, the shortest day of the year (at least for those of us… Continue reading The Shortest Day