Dave Rice 1 p.m., June 30
Posted November 15, 2011
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Steadily increasing light pollution around Southern California’s mountain and desert areas is making Venus-shadow observations more challenging.
The cloud-mantled planet Venus reflects 76 percent of the sunlight falling on it. Less than one-billionth of the light that bounces away is intercepted by Earth. Most strikes Earth’s day side, but some falls on ...