This site is mostly just a place to download some constellation images. The images are negatives, so the stars will appear as black dots on white paper. My idea is that they can be used as connect the dot exercises. I suggest teachers print out the negatives and ask the students to connect dots in the order they choose to make their own constellations. I am including the photos showing the bright stars against the black sky too.
Kids ask some of the best questions.
Oxygen molecules in our atmosphere scatter light, especially blue light. The sky glows the color of the scattered light. Since much of the blue light in sunlight has been scattered out, the color of the sun will change according to how much atmosphere it passes through. It looks yellow at noon, when it passes through very little atmosphere. It looks orange or red at sunset because the sunlight has to pass through more atmosphere.