Wednesday, July 4, 2018

July 4 - Fireworks!

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How do fireworks get their colors?
The beautiful colors in fireworks – so good at stirring our emotions – are pure chemistry.
Scientists listen to ocean bubbles
A research team recorded the sound of methane bubbles seeping from the seafloor off the Oregon coast, with the aim of using acoustics to identify – and perhaps quantify – this greenhouse gas.
Video: Why does the ocean have waves?
Waves are created by energy passing through water. Here's what you need to know, in 30 seconds.
Check out these mammatus clouds
Mammatus clouds can appear ominous. But, in a way that's so common in nature, their dangerous aspect goes hand in hand with a magnificent beauty.

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Check out these mammatus clouds
Stephanie Tilden Dorr in Wichita, Kansas, caught these clouds on June 26, 2018. She wrote: "Mammatus clouds appearing exactly one hour after a hailstorm passed over. Twenty-five years in Kansas and I’ve only seen mammatus clouds this vivid one other time, years ago. So exciting!"
How do fireworks get their colors?
A fireworks display in EarthSky's home town – Austin, Texas. Photo by our friend Sergio Garcia Rill.
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