“The first money I ever earned was for drawing stone tools.” – Mary Leakey  

Wikipedia article of the day is Circumstellar habitable zone. Check it out: https://ift.tt/1rDS4zs Summary: Horologium is a constellation of six faintly visible stars in the southern celestial hemisphere. It was first described by the French astronomer Nicolas-Louis de Lacaille in 1756 and visualized by him as a clock with a pendulum and a second hand. […]

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