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Using the Event Horizon Telescope, scientists obtained an image of the black hole at the center of galaxy M87, outlined by emission from hot gas swirling around it under the influence of strong gravity near its event horizon. (Credits: Event Horizon Telescope collaboration et al.)

From the first-ever image of a black hole to growing concern over climate change, we review some of the year’s top science stories with three of our regular science contributors.

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A unique view of Earth from the vantage point of NASA’s Lunar Reconnaissance Orbiter (LRO) in orbit around the moon. (Credit: NASA / Goddard / Arizona State University)

Adler Planetarium astronomer Mark Hammergren explains how a space-based sentry can help detect asteroids that will pass near Earth.

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This artist’s concept depicts NASA’s InSight lander after it has deployed its instruments on the Martian surface. (Credit: NASA/JPL-Caltech)

It took six months, a voyage of 300 million miles and a final “seven minutes of terror,” but NASA’s InSight spacecraft on Monday touched down on Mars in a landing the craft’s chief engineer called “flawless.”

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Vice President Mike Pence: “The space environment is fundamentally changed in the last generation.”

The president proposes a new branch of the military for space defense. Local experts weigh in on Space Force.

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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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NASA’s Curiosity rover has discovered ancient organic molecules on Mars, embedded within sedimentary rocks that are billions of years old. (Credit: NASA / GSFC)

A tantalizing discovery suggests that life could once have existed on Mars – and may still exist today. We get the latest on the red planet with Adler Planetarium astronomer Mark Hammergren.

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An image taken from a video shows a meteor flash on Jan. 16, 2018. (T. Masterson / International Meteor Organization)

A fireball streaked across the Midwestern sky Tuesday night, creating a sonic boom. An Adler Planetarium astronomer tells us more about this rare celestial fireworks display.

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It might sound like an episode of “The X-Files,” but a story reported Saturday by the New York Times sheds light on an official Pentagon program that researched and investigated unidentified flying objects.

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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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SpaceX's Falcon 9, left, and Blue Origin's New Shepard. (SpaceX / Flickr, Franke360 / Wikimedia)

Tech billionaire Elon Musk wants to create a colony on Mars. Assessing the challenges–and his chances of success.

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This illustration depicts NASA's Juno spacecraft successfully entering Jupiter's orbit. (Credits: NASA/JPL-Caltech)

Juno is set to uncover what Jupiter has been hiding. After a five-year, 1.75 billion mile voyage, NASA's spacecraft named after a Roman goddess successfully entered into orbit around the largest planet in our solar system Monday night. 

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Pluto

Pluto finally got a visitor from Earth, 85 years after the dwarf planet’s discovery. Completing a nine-year, 3-billion-mile voyage, NASA's New Horizons spacecraft reached the former ninth planet of our solar system on Tuesday. We'll discuss the milestone flyby with astronomers from the Adler Planetarium.

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NASA scientists go wild after the Mars rover's successful landing on the red planet early today. An Adler Planetarium astronomer tells us what happens next.