When the sun is straight up at noon, you see blue sky because all the other colors in the spectrum up until blue and purple ...

Look low on the southwestern horizon at sunset on Nov. 12 for a chance to see swift Mercury close to the red light of Mars in ...

Mercury will be farthest from the sun on Tuesday (Aug. 19), granting early risers a perfect opportunity to spot the fleet-footed world somewhat separated from the glare of our parent star. Mercury ...

I have been roaming the entirety of the United States of America over the past many months transversing cities, countryside, desserts, beaches, downtowns and have observed that only a few things ...

It will be a pleasant and chilly evening for Halloween with temperatures falling as soon as the sun gets low in the sky.