Smallest Star in the Universe
No one could possibly say that a star is the smallest one in the whole Universe. But the smallest known star is 2MASS J05233822-1403022, which is a pretty big name for a star that's about the size of Saturn. Could there be even smaller ones as yet unknown?
Heavens-Above – website
You can see the International Space Station from where you live. But when and from which direction? What are the two bright stars you've seen after sunset? What's an Iridium flare? The website Heavens-Above is a tool for beginners and experienced observers to answer questions like this.
Cosmic Father's Day
What sort of tie would you give a cosmic father? What would you feed him? Where might he find challenging mountaineering, make an astounding golf shot or get up an interstellar soccer game? How can you send a special man a genuinely galactic greeting? Here's how.
Miss Leavitt's Stars - book review
In the early 20th century an astronomer made a revolutionary discovery. Yet her life left almost no footprints on history. "Miss Leavitt's Stars" contrasts the solidity of her professional accomplishment with the butterfly touch of her life. Miss Leavitt isn't even the star of her own biography.
Cosmic 4th of July
What links the USA's Independence Day holiday, the Crab Nebula and NASA's Deep Impact spacecraft? What links the American War of Independence with the planet Uranus? And what is the Fireworks Galaxy? Here's the story.
Absolute Beginners - Seeing Mercury and Venus
We can see five planets with our unaided eyes. But people often ask how to find them and how to recognize them. Here is a beginner's guide for seeing Mercury and Venus.
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