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Eclipse alert . . . but just barely


The most minimal of penumbral lunar eclipses takes place Saturday night, though with clear skies, anyone can enjoy the nice May full moon. Look for Saturn east of the moon Wednesday night. Sunset triumvirate – Mercury, Jupiter, Venus are positioning themselves for a rare match-up.

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Watch Now — NOVA: The Looming Satellite Gap


NOVA: The Looming Satellite Gap

We know more about the Earth now than ever before, but that knowledge is in jeopardy as many Earth-observing satellites are nearing the end of their lives. Watch more from NOVA »