Like fossil fuels come from organic matter that grew because of the sun. Is there any form of energy on that cannot be traced back to the sun in some way?
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Everyone is giving you some great answers, but there are since more subtle ones worth mentioning too.
When you take a picture of space, the light from those other stars hits the camera sensor and induces a tiny electrical charge, which is captured, amplified, and analyzed to create the image. Your eyes actually work that way too.
It’s not an energy source as you typically think of it; it never powers anything, but technically it is* energy that exists on Earth that didn’t come from our sun.
That’s awesome. Now that you mention it I remember reading that supermassive black holes are a source of cosmic radiation too.
