Groundhog Day is February 2nd each year, and has its roots in Astronomy. It is a crossquarter day, marking the midpoint between the winter solstice in December and the spring equinox in March. Although we celebrate the beginning of spring around March 21st, we begin to sense an end of winter, and anticipate the arrival of [...]
Spring means focusing on getting outside with products from Planet Fun Clark Planetarium Store. Last week, we highlighted some of our favorite outdoor products. This week, I teamed up with store manager Mike Sheehan to test my rocket building skills and set out to create, and launch, the Scientific Explorer Rocket Car.
The vernal equinox occurs on Friday, March 20th, 2009, at 5:44 am, MDT. This is the official beginning of spring in the northern hemisphere. At this time the Sun is crossing the celestial equator from the southern half of the sky to the northern half of the sky. On the date of the equinox, the [...]
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