Why can’t you look at the eclipse? Here’s how to DIY safe viewing glasses
On Monday 8 April, a total solar eclipse of the sun will take place across the United States, Mexico, and Canada.
During this eclipse, the moon will pass directly between the sun and Earth, which will block out the sun’s rays and make the sky dark in the middle of the day. However, if you want to view this astronomical event, proper precautions need to be taken.
An eclipse goes through phases in which a person can view the moon slowly moving in front of the sun. This is called a partial phase. During these phases, Nasa recommends wearing protective eyewear, which must specifically meet the ISO 12312-2 international standard.
If glasses are
