On Dec. 9-10, skywatchers across parts of Canada, the U.S. and Europe will witness a very rare occultation of the bright star ...

Each Monday, I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes ...

The Geminid meteor shower starts tonight, and many people are excited to watch the shooting stars return. This is one of the ...

“What’s up in the sky?” is a recurring feature and publishes on the first of every month. You can find it on WTOP’s The Space Place. Email Greg your space questions and he might answer them in the ...

We’ve been receiving calls into the WTOP Newsroom reporting phenomena in the skies that people can’t explain — but our space expert can.

Some people probably believe that the twinkling effect is produced by the stars themselves, but that is not the case at all. Since 1986 I have had an affiliation with the Hayden Planetarium in New ...

Sirius, also called the Dog Star, is the brightest star in Earth's night sky. Shining more brilliantly than any other star visible from Earth (excluding our sun, of course), Sirius is outshone only by ...

We're now just past the midpoint of astronomical winter — that moment marking the midway point between December's winter solstice and March's vernal equinox. That moment took place at 4:11 p.m.

Dwarf planet Ceres reached its stationary point on August 15th, transitioning from eastward to westward motion relative to background stars, observable in the morning sky. On August 16th, a Last ...

August 2025 offers several planetary conjunctions, including a close approach of Venus and Jupiter on August 12th, and a second conjunction of Saturn and Neptune on August 6th, with a third occurring ...

Astronomers have observed what they believe to be a never-before-seen companion star orbiting Betelgeuse, a pulsating red supergiant star in the shoulder of the Orion constellation. One of the best ...

The two brightest nighttime stars available in the Minnesota and Wisconsin sky are Sirius and Arcturus. April is the only month of the year we can enjoy both of them at the same time in the early ...