Blue and violet light On a sunny day, shorter wavelengths (like blue and violet) scatter most effectively due to Rayleigh scattering, which is precisely why the sky is blue. At sunset, however ...

In New York City, moonrise is at 8:30 p.m. following sunset at 8:03 p.m. For Los Angeles, the moon will pop above the horizon ...

Tip: Stars twinkle, planets usually don’t. Evening Sky This month, look west after sunset to observe Mars. The Red Planet will be due west, halfway above the horizon. As its nickname suggests ...