We are all finding new ways to have fun at home. Naturally and predictably, I’m recommending you step into your...

In the “current affairs” department, no other topic could be explored on this page right now. You wouldn’t think “germs”...

There are two foolproof ways to ascertain Earth’s true shape without needing to trust photos or any astronaut.

Media outlets such as Earth and Sky are saying that we are entering a “SuperMoon season,” with three SuperMoons in...

In 1935, Albert Einstein and two colleagues, Boris Podolsky and Nathan Rosen, wrote a now-famous paper in which they addressed...

Mercury alters its brightness more than any other planet, varying by three hundredfold. Each year its light goes from fainter...

Remember the movie Contact, starring Jodie Foster? She contacted aliens from a famous star that in the movie was pronounced...

A supernova in our lifetimes is not impossible.

The famous star Betelgeuse is dimmer than anyone has seen it in a century.

This is the very finest test of vision in all the heavens.

Find out why the coming year will be so remarkable.

Folklore says that such a ring around the Sun or Moon portends the arrival of a storm within 24 hours....

Astronomers use the letter X followed by a constellation name to represent objects emitting X-rays — a rarity in the...

Moonlight is at its brightest. Let’s celebrate that by giving it some attention during this lunation. Copernicus, a magnificent, isolated...

Consider Andromeda: When our sister galaxy’s one trillion stars collide with us in four billion years, no stars will make...

Monday, Nov. 11: It lasts over seven hours, with the middle of the transit happening at around 10:30 a.m., when...

Since cold air can hold just one-thirtieth as much water vapor as very warm air, the substance we breathe is...

This setup typically lets cold polar air pour into the Northeast, and can set the stage for early snowstorms.

Saturday, October 5: There’s even a backup plan in case of clouds. Saturn and the Moon will be just as...

Halos are the poor person’s Weather Channel: a time-honored harbinger of bad weather.