Science

Sprites, Elves, Trolls, Pixies, Ghosts, Gnomes, and Blue Jets

Sprites, Elves, Trolls, Pixies, Ghosts, Gnomes, and Blue Jets   No, we’re not traveling today to Middle-earth or into the belly of a dungeon crawler. Instead, we’ll take to the skies. All the fantastical characters of today’s title are real phenomena in the upper atmosphere! Lightning strikes – photo by Mircea Madau Most of us […]

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Roy G. Biv

Roy G. Biv   Many students learn the mnemonic Roy G. Biv to recall the visible colors: Red, Orange, Yellow, Green, Blue, Indigo, Violet. It’s a handy way to quickly remember the order of a rainbow spectrum. Have you ever asked yourself, “what exactly is indigo?” Is it near blue? Near violet? A mixture of the two? If

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The Loudest Sound

The Loudest Sound   On 27 August 1883, reverberations from the northwest disturbed the morning serenity of sheep ranchers outside Alice Springs, Australia. The men later described the sound as “a series of loud reports, resembling those of artillery.” No war raged in central Australia in 1883; no military exercises took place. Were these ranchers under

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The Iron Catastrophe

This entry is part 3 of 3 in the series Structure of the Earth Theme Week

The Iron Catastrophe Everyone alive today owes their existence to a catastrophe. To explain that seemingly paradoxical statement, let’s foray into a brief overview of the universe, our sun, and the planet, courtesy of Columbia University. Somewhere around 13.8 billion years ago, the Big Bang kicked things off. There was hydrogen and only hydrogen. The

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The Danish Temblor

This entry is part 2 of 3 in the series Structure of the Earth Theme Week

The Danish Temblor In our previous issue, we explored the recent confirmation of a theory that Earth has five layers instead of the previously believed four. The standard model included the crust, the mantle, the outer core, and the inner core. Before 1936, the models would have indicated the earth had just three layers: crust, mantle, core.

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