The upcoming solar eclipses and the current high sunspot activity means it’s a great time to observe the Sun. Eclipses also mean that large groups of people will be together to view these events. However, rule #1 for astronomy is to never look at the Sun with unprotected eyes, especially with a telescope or binoculars.
So, how can you safely show the changing Sun to a large group of people without having them line up forever to look through a telescope with a solar filter, or having a lot of equipment?
A group of astronomers have a solution: Get a disco ball.
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