February 14th, 2016
Waxing Crescent Moon
Seth Jarvis

A long time ago in a galaxy far, far away…

…on the outer edge of a spiral galaxy, home to a hundred billion stars… …a star died. This was no ordinary star.  It was a monster of a star, at least 20 times more massive than our Sun.

Violent Universe opens February 18

Experience intense cosmic destruction from the safety of our Hansen Dome Theatre. Clark Planetarium’s newest feature, Violent Universe: Catastrophes of the Cosmos, is a sure fit for those who enjoy the splendid beauty of our cosmic surroundings paired with explosive…

Jesse Warner

Dark Sky Presentation

Remember when you were young, looking up into the night sky? How many stars did you see? Have you ever tried to count them? Look up in the sky tonight. Can you still see as many stars? You may notice…

Robert Bigelow

Is the Sun directly overhead?

In my March missive on Daylight Saving Time, I mentioned a misconception that is held by some students and possibly some adults as well. A more common misconception concerns the apparent height of the Sun in the sky. When I ask…

Gateway to the Stars observing series

Ever wondered how to observe deep space objects with a telescope?  Or what you can see in binoculars?  Join Clark Planetarium for a unique tour of the sky through the eyes of a practiced amateur astronomer.  

Robert Bigelow

Neutrinos and Supernova 1987A

Twenty-three years ago, on 23 February 1987 at 12:35 a.m. MST, detectors in the US, Japan and Russia observed a burst of 24 neutrinos. They came from a supernova in the Large Magellanic Cloud, a small satellite galaxy to the…

Robert Bigelow

A Different Star

If we could travel back in time several thousand years to observe the night sky, we would notice two main differences compared to the night skies of today.   The most obvious would be the lack of a sky glow…


Scorpius: My early morning companion

Most mornings at 6:05 a.m. you’ll find me standing at a bus stop, patiently awaiting the arrival of the bus that brings me to work. Not a bad ride, actually. What would normally be a 25 minute drive is a…

Seth Jarvis

Cosmic Quiz – Let’s talk about star colors

This week’s Cosmic Quiz Question was asked by Erik Lindblom. “Why do stars shine in different colors?” That’s a great question, Eric! Stars come in a variety of colors, temperatures, ages, brightness and sizes.