Astronomical Concepts – Week 8 (Final)

For this final week of the course the focus was cosmology. The main topics of learning we looked at included: Galaxies Quasars Dark matter Dark energy The Big Bang Theory Gravity Expansion of the universe and inflation Galaxies There are three main types of galaxy: spiral, elliptical and irregular. Our Milky Way galaxy is a … Continue reading Astronomical Concepts – Week 8 (Final)


Astronomical Concepts – Week 7

This week - special relativity. We started with the two main axioms of special relativity: The laws of physics are the same in all inertial frames of reference The speed of light is constant (299,792,458 m/s) Tonight we had to imagine we were floating through space in a spaceship. Are we stationary or are we … Continue reading Astronomical Concepts – Week 7

Astronomical Concepts – Week 2

The main topics this week were the solar system, gravity and the tidal effect. I have previously written on my blog about the solar system so for this entry I will just write about gravity and the tidal effect. The two main theories of gravity come from Isaac Newton and Albert Einstein, both are used … Continue reading Astronomical Concepts – Week 2

Astronomical Concepts – Week 1 Introduction

Thursday 13th October was the first week of my new astronomy course at Sydney Observatory. Like the first course I attended earlier this year it is presented by Dr Paul Payne. This course aims to expand on the first and build on some of the main concepts of astronomy, including the solar system, gravity, the … Continue reading Astronomical Concepts – Week 1 Introduction

Exploring the Heavens – Final Week

For the final class the topic was Telescopes. We covered the history of telescopes and the different types. We were meant to go outside and use some telescopes, but due to the heavy Sydney rain this was not possible tonight. The advantage being we got to stay inside out of the cold and were able … Continue reading Exploring the Heavens – Final Week

Exploring the Heavens – Week 4

The main focus for this week was 'The Characteristics of Stars'. For this lass I was back to my usual Tuesday class time, and I had been looking forward to this session for quite some time. The session started outside at the observatory waiting for the ISS to fly across the Sydney sky at 30,000 … Continue reading Exploring the Heavens – Week 4