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
Tag: Cosmology
An overview of dark energy
Dark energy, constituting about 68% of the Universe, causes its expansion to accelerate. Discovered in 1998, it contradicted previous beliefs that gravity would slow this expansion. Cosmologists theorize dark energy may be a cosmological constant but are exploring other explanations, as the true nature remains uncertain.
Happy New Year 2015
Happy new year to all my readers and followers. I hope you have all enjoyed the festive break and that you have some great plans for 2015. I have taken a short break from blogging, although during the break I managed to purchase the domain thesciencegeek.org, which will hopefully make my blog easier to find. I… Continue reading Happy New Year 2015
A Brief History of the Universe
Updated August 2026 This post gives a (brief!) history of the Universe from the Big Bang until the the present day. As I am sure you'll agree, it's a big topic; so I'll only give a outline of some of the key events and when we believed they happened. This post is one of many… Continue reading A Brief History of the Universe
Stardust
Last week I was on holiday in London. While I was there, I spent an afternoon at the Royal Greenwich Observatory, which is set on top of a hill in East London. It was commissioned in 1675, making it one of the oldest astronomical observatories in the world. Sadly, it can no longer function as… Continue reading Stardust
Explaining Science 