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- Scientists hunt for dark matter in the strangest of places. They know where it is, what it does and can sort of see it if they look in the right way. They just can't quite figure out what it is or how to get their hands on it even though it's everywhere. But it is well understood compared to dark energy which is an even bigger mystery.
- They are the crown jewels of the galaxy. Neither stars, planets, moons or asteroids, they are the mysterious clouds of gas we call NEBULAS. Nearly invisible to the naked eye, astronomers use the most sophisticated techniques to tease images of these fascinating phenomena from the dark sky. When revealed in their full glory, they glow, reflect or obscure the galaxy's light.
- If a planet has an atmosphere it has weather. And where there is weather there are storms. Our solar system is chock full of them. And the bigger the temperature extreme the bigger the storm. Which makes Earth hurricanes and thunderstorms seem rather uninteresting.
- Compared to the largest things in the universe galaxies are trifles compared to super clusters, voids, lyman alpha blobs, and the cosmic web. But even among the smaller objects such as stars and planets, some are mind boggling by human standards.
- Physical behavior that results from having a constant speed of light are described.