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Professor Mayer, Director of the Chicago Astronomical Society will talk about the Russian meteoroid and the large 2013 asteroid that passed within 17,000 miles of Earth's surface.

There are at least 2 more large asteroids in Near-Earth orbits: one in 2027 and the other in 2029. Both of these objects will come at least as close to Earth as 17,000 miles.

He will discuss the probabilities of collision and the celestial mechanics of avoiding collisions.

NASA is tracking over 10,000 Near-Earth objects and this information is published in NASA's data on

The calculated closest-approach figures are expressed in Lunar Distance units (LD)

Joins us for a great evening full of relevant information and Astronomical facts.

Parking available at 357 W. Huron. $5

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  • Linda

    have to stay late at work :(

    June 27, 2013

  • Gary S.

    Sorry guys, I won't be able to get down there from the burbs in time.

    June 24, 2013

  • Bob

    Astronomy that IMPACTS us all.

    June 13, 2013

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