An Introduction to the Universe. And a few numbers and simple mathematical techniques for developing a sense of scale. Let’s start at the planet we call home. Earth. The first lesson in scale…. How many Earth’s would fit side by side between the Earth and the Moon?.
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And a few numbers and simple mathematical techniques for developing a sense of scale.
How many Earth’s would fit side by side between the Earth and the Moon?
Image from the Mars Express Spacecraft
The Universe has a history of violence.
With the invention of the astronomical telescope in the early 1600’s, astronomers were able to see previously unknown objects like this Globular Cluster of stars in the constellation called M13
Note the two supernova
Our understanding of the beginnings of our Universe has given rise to a phenomena known as cosmic inflation that explains the current large scale structure of our Universe.
Recent measurements of supernova in distance galaxies has provided evidence that there is an unknown energy that is causing our Universe to accelerate its expansion – Dark Energy