Black Holes Explained (Sort of)

Black Holes Explained (Sort of)

Black holes are a confusing topic in astronomy. You’ve heard about them starting from a young age, but whenever you ask someone for more information about them, there’s a whole lot of “I dunno”s. The truth is, black holes have been romanticized...

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What is Escape Velocity?

What is Escape Velocity?

Escape Velocity is probably something you’ve heard on a TV show, or maybe you learned about it from NASA talking about their newest spacecraft. It is a commonly discussed term, but it isn’t the easiest thing to understand. Imagine you’re in a...

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The Tale of Sir Isaac Newton

The Tale of Sir Isaac Newton

There’s an old story of Newton sitting underneath a tree during his studies, when an apple fell and hit him on the head, leading him to begin his adventures into solving the mysteries of gravity. While it’s doubtful that this fanciful tale...

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Pendulums and Gravity

Pendulums and Gravity

In the video above, I talk about how pendulums actually work. If you haven’t watched it, the principle is simple: an object is suspended from a fixed point and allowed to swing back and forth – the mass of the object and the time it takes...

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The Life and Death of Stars

The Life and Death of Stars

Did you know that stars live and die just like other living things?…Okay, maybe not just like them. But they do have a beginning, middle, and end. All stars start out the same way, from a nebula. A nebula, otherwise known as a “star...

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Gravitational Lensing

Gravitational Lensing

Most of us have experienced using a lens in some way, whether it was using glasses, cameras, or our favorite, telescopes. A lens is a piece of glass or other transparent substance with curved sides for concentrating or dispersing light rays. They...

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Where Do Stars Come From?

Where Do Stars Come From?

Where do stars come from? The short answer is: gravity. All objects with mass experience gravitational attraction to each other. That includes you & the Earth, you & me, every person on our planet, and every star in the cosmos. So, why...

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Why do Astronauts Float?

Why do Astronauts Float?

Did you know that astronauts on the International Space Station (ISS) experience about 90% of the gravitational acceleration that we feel on Earth’s surface? That might seem strange, especially since when we look at them, they are always floating...

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