We separate fact from hype about the upcoming “planet parade.”

On the evenings of Jan. 17 and 18, the planets will appear virtually side by side, in what's called a “planetary conjunction.”

On Monday night, the year’s first full moon will pass in front of Mars and cause the planet to momentarily disappear from view.

In Chicago, the skyline can light up the night — but look a little higher and the stars will put on a show, too.

Here’s what to know about how the Earth’s march around the sun splits up the year.

Cloud cover and moonlight are likely to spoil meteor watching Friday night, when the annual Geminids shower reaches its peak.

On Saturday, Jupiter will shine its brightest of the year and will be visible all night as it travels the sky from sunset to sunrise.

Comet Tsuchinshan–ATLAS is one of the brightest in years. We've got tips on how to view this visitor from the outer solar system, even in Chicago.

A severe geomagnetic storm is heading toward Earth, likely to hit Thursday, and what that means for Chicagoans is conditions are ripe for another spectacular display of the aurora borealis (northern lights) in our neck of the woods.

The partial eclipse will hit its maximum before 10 p.m. Tuesday, which is downright considerate of the moon on a school night. 

Full supermoons appear brighter because the moon is closer to earth when they occur.

The Perseid meteor shower is back for its annual sky show, with peak viewing Sunday night into Monday morning.

The Great American Eclipse is almost here. Here’s how to make the most of the experience in Illinois and the Chicago area.

If you've been sleeping on the North American total solar eclipse of 2024, it's time to start paying attention. The big event — on April 8 — is fast approaching and folks who haven't prepared could find themselves left out in the dark.

Clear skies, a new moon and relatively warm temperatures will make for a great opportunity to catch the peak of the Geminid meteor shower Thursday — even in Chicago.

During their first-ever spacewalk, astronauts Jasmin Moghbeli and Loral O’Hara spent hours outside the International Space Station, successfully replacing hardware on the station’s solar array. But a tool bag became untethered and is now orbiting Earth.