Posts by 

Don Machholz

Kochab and Pherkad: The Guardians of the Pole

Kochab and Pherkad are two stars in the Little Dipper that carry the nickname of the Guardians of the Pole. Here's how to find them and more.
Astronomy Essentials

Saturn’s rings: Top tips for seeing

If you want to see Saturn's rings, August 2022 is a great time to look. Grab a telescope, find a dark sky and read the tips found here!

Raining fish and frogs … for real

Click here to read many recent, documented accounts of raining fish and frogs. Yes, it's a real thing! Discover the causes here.

Visualize the Perseid meteor stream in space

This visualization by Ian Webster and Peter Jenniskens uses NASA data to render the Perseid meteor stream in space. Don't miss this!

Why do meteor showers have a radiant point?

Meteors enter Earth's atmosphere on parallel paths. So, you'll see meteors appear to come from a single point in the sky: the radiant point!

Meet Delta Scorpii, aka Dschubba

Delta Scorpii, also known as Dschubba, is a variable star in the constellation Scorpius. With the eyes alone, you can check its brightness for yourself, and for science.

Shoemaker-Levy 9 impact on Jupiter 28 years ago

Comet Shoemaker-Levy 9 hit Jupiter in 1994, 28 years ago, scarring the gaseous surface and also leaving behind water that remains in the atmosphere today.

Eltanin and Rastaban, the Dragon’s eyes

These 2 famous stars shine down from the northern sky. Eltanin and Rastaban represent the fiery eyes of the constellation Draco the Dragon.

Ruby red Antares is the Scorpion’s Heart

Red Antares, Heart of the Scorpion in the constellation Scorpius, is a mighty star, a red supergiant in the last stages of its life span.

Does the North Star ever move?

The North Star is a symbol for constancy. But, if you took its picture, you'd find that it makes its own little circle around the sky's north pole every day.