Author Archives: sarabkeller

Precession of Earth

Posted on January 25, 2016 by sarabkeller

I think one of the most interesting topics in Chapter 2 of the Astronomy textbook is about the concept of precession, or the gradual change in the rotational axis of Earth. The direction of Earth’s axis rotates on a 26,000 year cycle. That may mean next to nothing to us in our lifespan, but precession will gradually […] Continue reading →

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The size of the universe and what that means for space travel

Posted on January 25, 2016 by sarabkeller

If there is one thing that I have learned so far in the Solar System, it’s that the universe is really big. Just for light to travel from one end of the Milky Way galaxy to the other takes 100,000 light years, and this distance is short compared to the universe itself! Additionally, since light […] Continue reading →

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Introduction

Posted on January 14, 2016 by sarabkeller

This winter break, my family and I went to June Lake, CA to go skiing! Behind us, you can see June Lake (behind me, on the right) and Mono Lake (to the left of my brother’s head). This area is located in the Sierra Nevada mountain range in Eastern California, close to other popular Californian skiing destinations, […] Continue reading →

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