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human world

Where is the Comet Hale-Bopp now?

Remember Comet Hale-Bopp? Twenty-five years ago today – on April 1, 1997 – Comet Hale-Bopp reached its perihelion or closest point to the sun. It was slightly less than Earth’s distance from the sun at 0.9 astronomical units (Earth-sun…

Who owns all the satellites?

Who owns all the satellites overhead? Thousands of satellites orbit in the sky above your head. You use them every day in a myriad of ways, from the internet that allows you to read this, to the weather report that tells you how to dress…

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