Have you seen the Mayak satellite? | | On July 14, an amateur group in Russia launched a small satellite called Mayak. They said it would become the "brightest shooting star" in the sky. Why'd they do it? Here's how to look for it. | | |
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Moon shadow versus sun reflection | | This 5-second video shows a sunglint - a bright spot - crossing Earth from right to left. It also shows a dark spot - the moon's shadow - moving the opposite way. | | |
Soar over Pluto and Charon | | To celebrate the 2-year anniversary of New Horizon's flyover of the Pluto system, NASA released these 2 cool videos. | | |