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A firefly’s familiar glow is caused by chemical reaction. Explanation here, plus many wonderful firefly photos.
Scutum has only has 4 stars that make up the constellation outline, but it’s noticeable in a dark sky because a rich region of the Milky Way is behind it.
It’s said that once you’ve seen a green flash, you’ll never go wrong in matters of the heart. Here’s all you need to know … plus great pics!
Whether you’re a beginning stargazer or a veteran of thousands of starry nights, binoculars can be your best friend.
Telstar was the 1st satellite to relay television signals between Europe and North America. It launched on this date … and helped change the world.
Are you a July baby? Your birthstone, the ruby, is among the most highly prized of gemstones.
Here’s another cool asterism, or noticeable pattern of stars. The Scorpion’s Crown consists of just 3 stars.
We celebrate Asteroid Day on June 30 because it’s the anniversary of a 1908 explosion over Siberia that killed reindeer and flattened trees.
Not traveling to the centerline of the eclipse? Expect NASA images via 11 spacecraft, at least 3 aircraft, more than 50 high-altitude balloons, and the International Space Station.
It’s possible to see the whole circle of a rainbow – but sky conditions have to be just right. Plus you have to be up high!
Cassiopeia, Queen of the north
A grand year for the Geminids