Solar Week - Ask a Question

Come here during Solar Week (next one: March 22-26, 2021) to interact. To post a question, click on your area of interest from the topics below, and then click on the "Ask New Question" button. Or EMAIL or tweet or plant in Answer Garden your question about the Sun or life as a scientist to us -- and watch for it to appear here.  You can also visit our FAQs (frequently asked questions). In between Solar Weeks in October and March, you can view all the archives here.

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Last Post 3/23/2021 11:37 AM by  Lindsay Glesener
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3/23/2021 6:17 AM
    Why do we need sunscreen?
    Tags: protection, sunscreen
    Lindsay Glesener
    New Member
    Posts:37 New Member

    3/23/2021 11:37 AM
    Sunscreen blocks UV rays from the Sun that could cause long-term damage to our skin, including cancer. The Earth's atmosphere blocks a lot of these rays, but some of them can make it through and that's why we need to put on sunscreen. Sunscreen is formulated to block the wavelengths of light that can be harmful. Astronomical telescopes use a similar kind of method to make sure that they only see the specific wavelengths of light that they want - they put on coatings that block certain wavelengths and allow others through!
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