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Chicago's east-west streets are the best place to view the fall equinox sunset. (Patty Wetli / WTTW)

During the fall equinox, the sun rises due east and sets due west, creating an effect dubbed “Chicagohenge” (in reference to Stonehenge), when the sunset is strikingly framed on east-west streets by the city’s skyscrapers.

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(Adler Planetarium / Facebook)

Museums and aquariums can now reopen their doors — with restrictions — but few of them have, and at least one Chicago institution says it will remain closed until phase five of Illinois’ reopening plan.

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Jupiter is one of the brightest objects in the night sky. Look for it in July. (Hypervel / Flickr)

July is a great month for planet watching. Jupiter, Saturn, Venus, Mars and Mercury will all make an appearance.

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(Adler Planetarium / Facebook)

A day after celebrating its 90th birthday, the Adler Planetarium laid off 120 part-time and full-time employees. The “difficult decision” was made “in order to help the Adler survive,” spokesperson Jennifer Howell said in a statement to WTTW News. 

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(picjumbo_com / Pixabay)

In a world in which scientific literacy is often lacking, the online platform Zooniverse.org is doing what it can to encourage “people-powered research.”

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(Brenna Hernandez / Shedd Aquarium)

A handful of museums and cultural institutions in and around Chicago are offering free admission to workers affected by the ongoing federal government shutdown. 

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NASA InSight’s first full “selfie” on Mars, taken Dec. 6, 2018, displays the lander’s solar panels and deck. On top of the deck are its science instruments, weather sensor booms and UHF antenna. (Credit: NASA / JPL-Caltech)

From amazing new vistas of Mars to a little rover bouncing on a distant asteroid, an exploration of recent achievements in outer space with Adler Planetarium astronomer Lucianne Walkowicz.

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Mars is bright in the summer sky this week. (Credit: NASA / JPL / USGS)

For the next several days, the celestial event calendar includes some stellar highlights for observers in Chicago and around the globe.

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This computer-generated image depicts part of Mars at the boundary between darkness and daylight. (Credit: NASA/JPL-Caltech)

Later this month, the red planet will be just 35.8 million miles away – the brightest and closest it’s been to Earth since 2003.

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Rosaly Lopes (Twitter)

A conversation with NASA research scientist Rosaly Lopes, who will be recognized this week at an event celebrating women in space science. 

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From Chicago’s first major telescope, to the most sophisticated scientific instrument of the 12th century, a look at some seen and unseen treasures at the Adler Planetarium.

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(Courtesy Adler Planetarium)

Starting Friday, planetarium visitors will have another chance to explore the ever-evolving way humans view the universe.   

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“Chicago Tonight” viewer J. Scott Sykora shared this photo of a harvest supermoon eclipse on Sept. 27, 2015.

If the skies over Chicago cooperate over the next 12 hours, the moon will offer a very rare triple feature. 

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A rare celestial event Jan. 31 will result in a super blue blood moon, when the moon will past through the Earth's shadow and take on a reddish tint. (NASA)

Wednesday’s “super blue blood moon” marks the convergence of three lunar events, but it will hardly be visible to viewers in Chicago. 

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An artist’s impression of what the surface of the planet Proxima b might look like. (M. Kornmesser / European Southern Observatory)

Viewers on four continents will watch a virtual presentation hosted by Adler Planetarium in early November to learn about the possibility of life on other planets.

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NASA’s Cassini spacecraft is shown during its Sept. 15, 2017, plunge into Saturn’s atmosphere in this artist’s depiction. ( Credit: NASA / JPL-Caltech)

The Cassini mission has completely transformed our understanding of Saturn and identified two moons that could potentially harbor life. On Friday morning, the journey will come to a fiery end. 

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