quasar:

Also called QSO, Quasi-Stellar Object. One of a number of distant celestial objects larger than stars but smaller than galaxies. Quasars give off blue light and powerful radio waves. Even though quasars seem to be much smaller than galaxies, they give off thousands of times more energy. Some scientists think…

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Seymour Science Blog

Seymour Simon’s striking new book, ROCKS AND MINERALS, is being published on August 15th (available for pre-order now on Amazon). Here’s an interview with Kirkus about his connection to rock-hounding, the process of making this book, his views on teaching…

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