I’m actually in Alaska right now, running an Aurora Borealis tour for the Old Farmer’s Almanac. We have 86 guests,

We are still in our annual cloudy season. Only one night in three is clear around here this month. Still,

Physicists increasingly doubt that time has any independent existence. Let’s look at this afresh. We could start with a paradox

We usually undervalue the commonplace. Clouds are less appreciated than rainbows, while rainbows are deservedly less exalted than the super-vivid

Last week’s huge X-class solar flare did not give us auroras – because we never had a chance. Thursday night

Jupiter came closest to Earth last weekend, and will dominate the sky all this month. As a bonus, it ascends

This won’t be a great meteor year, since a Full Moon will blow out the beloved summer Perseids. But right

Like many astronomers, I’ve always been intrigued by the Star of Bethlehem. It’s the best-known star. People who cannot name

Comet ISON was virtually demolished by its Thanksgiving passage just above the Sun’s surface. Somehow, a few dusty remnants of