Image courtesy of  Todd Carlson.
August, 2003, during and after a blackout which spanned the eastern seaboard.

StarWatch is a Canada-wide experiment in which citizens measure night sky brightness levels during the Earth Hour lights out event, and then shortly after the lights are turned back on.

The Question:

Will Earth Hour help you see more stars?

The Experiment:

Volunteers count stars they can see in the Little Dipper during Earth Hour and again when the lights come on.

When:

8:45 and 9:15, Saturday March 28th.
The times need to be as close together as possible so the only variable, or thing that changes, is the lights.

Where:

Your yard, the sidewalk, a playing field… wherever, as long as you have a postal code.

Why:

Change in sky brightness is an indicator of the amount energy wasted through light pollution.
Your data makes a difference. Here’s how to participate.

For more information about Earth Hour visit earthhour.org or wwf.ca