Tag Archives: stars

The Atomic Spectrum

Astronomers know that if white light passes through a prism and is bent, it’s separated out into its component colors—the colors of the rainbow. Astronomers also know that when light interacts with atoms, the building blocks of the universe, the … Continue reading

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Stars and Radiation

Stars are hot. Really hot. Hot enough to have energy to spare for their planets. If our star wasn’t hot, we couldn’t live on Earth. And our star isn’t even particularly hot for a star. It’s a middle-aged star of … Continue reading

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Info in a Rainbow

What do you see in this image? If you’re from a larger city and haven’t had the opportunity to venture into a place like the desert, you might not know what you’re looking at. That’s the Milky Way, our name … Continue reading

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Light Pollution

This photo was taken at night. Seriously. At night. But…it looks too bright for the night. I’ll bet I wouldn’t even have to shine a flashlight to see my way around here. Need proof? Here’s New York City during the … Continue reading

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Magnitude and Intensity

I originally published this post to my now-inactive blog, so if you know me from back when the Old Content Archive was ftlofacts, you’ve read this already. If you know me from Science at Your Doorstep, then read on! It’s … Continue reading

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Stars: Naming and Brightness

So, this post builds a bit on constellations. I know it’s been a while since I’ve talked about them, so I’ll give you a brief recap before we dive into stars, their names, and their brightness. Meet Pegasus, and the constellations … Continue reading

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The Ecliptic

The ecliptic, as astronomers call it, is the apparent path of the sun against the background of the stars in the sky. It’s useful because it tells us how to find the planets in the sky. They can be hard to … Continue reading

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The Elusive Light Year

Hey everyone! Before you read this post, I just want to take a moment to make you aware of a couple things. First, this is one of my oldest posts and I’m backdating it so it stays that way, but … Continue reading

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Where Are We?

In the 4th century B. C. E. (Before Common Era), scientists believed the Earth was the center of the universe. Before that, they were convinced the Earth was flat. Now, if anyone so much as mentions that the Earth is … Continue reading

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