Friday, 6 April 2018

6 April 2018 Astronomy Lesson

6 April 2018

Today, we learned more about Orbital Mechanics such as the different types of orbits (elliptical, parabolic etc.) and about Kepler's Laws. Kepler's Laws are especially important in understanding how planets and other celestial bodies orbit each other.

Another equation we learned about is the equation for Angular Momentum. L = tangent velocity x radius x mass. Using this equation, we would be able to calculate the angular velocity of objects in orbit. A practical application of angular momentum is in the calculations of angular velocity of objects in Earth's orbit (e.g. Satellites) to ensure that they are at the minimum speed to stay in orbit above Earth.

We also started planning the design for our rockets that we will be building and launching next week. Chris and I planned a rocket design with a 1.5 litre bottle which we want to attempt to modify by adding chemical boosters :D

Friday, 23 March 2018

23 March 2018 Astronomy Lesson

23 March 2018

Today, I unofficially stepped down from my post as Vice-Chairperson of Astronomy Club. It was a relief as it had been a stressful position and I was glad I finished my tenure and accomplished my goals of helping my club grow. However, it was also bittersweet as it meant my time in Astroclub was coming to an end. I had encountered many obstacles and made many friends through Astroclub, creating many precious memories.

In addition, I learned more about the practical applications of what I have learned in school in Astrophysics. In the past, I used to be very confused when Raj mentioned differentiation, integration, convex lenses, concave lessons etc. However, after learning about all of it in my lessons in school, I find that I understand astrophysics topics like telescopes and orbital mechanics formulas that Kang Zhe touched on much better.

Friday, 23 February 2018

23 February 2018 Lesson Summary

23 February 2018
Cosmology Lesson conducted by Yi Ming and Jia Chen

Image result for big bang theory scienceWe had a cosmology lesson about the universe's evolution from the beginning of the Big Bang up till today. It was interesting to learn how theoretically, the universe went through a period of inflation that created today's natural universe and laws in the span of 0.00000000000000000000000000000001 seconds.

We also learned more about some significant astronomical discoveries that shaped the way we view astrophysics today such as Copernicus' and Galileo's theories postulating that the earth was round in the 1500s and 1600s.

Lastly, we learned about how the universe will meet the unavoidable void of death. However, there are still debates about how the universe will end, whether through the Big Freeze or Big Rip. The big freeze theory, ironically also known as the heat death, posits that the universe will keep expanding which causes the temperature of the universe to keep dropping, allowing no room for usable energy to exist. We learned more about these theories before we got into groups to research more about a particular theory and creating a Kahoot Quiz about it :D


Tuesday, 28 June 2016


Hello! I'm Grace and this blog will be a catalog of my NYAA journey in Secondary School