If the weather holds, NASA will send four astronauts into space today on a 10-day mission to the moon and back, something the agency hasn't done in more than 50 years.

With an extreme cold warning in effect and actual air temperatures below zero in Chicago on Friday morning, several of the city's major cultural institutions have announced closures to the public.

Chicagoans — and folks across the country — were treated to a dazzling display of the aurora borealis (northern lights) Tuesday night and there could be an encore in the works Wednesday.

The museum is celebrating its own history as the first planetarium in the Western Hemisphere by preparing for its centennial celebration in 2030.

A pair of newly identified comets are jointly appearing in the October sky, and it’s possible to see both — if you know where to look and when.

A bright moon will make it harder than usual to see the meteors as they streak across the night sky. But experts say it’s still worth a try.

Elizabeth Babcock comes to the Adler Planetarium following a short stint as the founding director of the Smithsonian American Women’s History Museum.

Using the James Webb Space Telescope, researchers said they were able to detect signs of sulfur-based molecules called dimethyl sulfide or DMS, which on Earth are only produced by life, primarily marine phytoplankton.

The first meteor shower of the year is here, with the Lyrids peaking late tonight into the pre-dawn hours on Tuesday.

This week’s lunar eclipse will be the first witnessed in high-def from the moon itself — technically a solar eclipse on the moon — thanks to a lunar lander. “I cannot wait for this to happen,” said astronomer Michelle Nichols of Adler Planetarium.

Adler Planetarium announced Wednesday that Michelle Larson is stepping down as president and CEO after more than a decade on the job.

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 long holiday weekend is a great opportunity for Chicagoans to play tourist in their hometown, but with the NASCAR Street Race set to circle Grant Park July 6-7, what’s even open to visit?

Hundreds of people gathered outside the Adler Planetarium in downtown Chicago for a viewing party. People brought telescopes, cameras and the necessary protective eyeglasses.

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

On Wednesday, the Chicago Park District Board of Commissioners approved an admission fee increase that will take effect April 1.