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  2. Diffraction spike - Wikipedia

    en.wikipedia.org/wiki/Diffraction_spike

    Diffraction spikes are lines radiating from bright light sources, causing what is known as the starburst effect [1] or sunstars [2] in photographs and in vision. They are artifacts caused by light diffracting around the support vanes of the secondary mirror in reflecting telescopes , or edges of non-circular camera apertures , and around ...

  3. Photopsia - Wikipedia

    en.wikipedia.org/wiki/Photopsia

    It is light-sensitive and communicates visual messages to the brain. If the retina detaches, it moves and shifts from its normal position. This can cause photopsia, but can also cause permanent vision loss. Medical attention is needed to prevent vision loss. Procedures may include laser treatment, freezing, or surgery.

  4. Northern lights in Indiana: Here's what Hoosiers saw ... - AOL

    www.aol.com/news/northern-lights-indiana-heres...

    The aurora borealis put on a dazzling light show in Indiana this weekend. Here's a look at what people were seeing from French Lick to Indianapolis. Northern lights in Indiana: Here's what ...

  5. IC 10 - Wikipedia

    en.wikipedia.org/wiki/IC_10

    Although the galaxy has a luminosity similar to the SMC, it is considerably smaller, with an estimated diameter of around 5000 light years. [8] Its higher metallicity compared to the SMC suggests that star formation activity has continued for a longer time period. The H II regions in IC 10 have all formed recently, within the last 10 Myr. [9]

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