| | Earth, the water planet, via NASA. | | |
How did Earth get its water? | | For decades, scientists have said that at least some of Earth's water came from comets and asteroids. New research suggests an even more primeval source, the vast cloud in space from which our world formed. Read more. | | |
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How to see Venus in daylight | | Another time of greatest brilliancy is coming up for Venus, when many spot this brightest of planets in a blue daytime sky. Here's how you might try it. Read more. Crescent Venus (left) and crescent moon, through a telescope, in daytime. Venus is the most commonly seen sky object seen in daytime, after the sun and moon. Image via NASA. Read more. | | |
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