It all started with a Big Bang.

Find out how and find out how we know that!

The Universe used to be filled with hot, dense matter, smoothly distributed across a rapidly expanding space.  How did that become the complex Universe of clustered stars and galaxies that we see today?  That complexity includes humans who can figure out the history and future of the Universe by careful observations that bridge its vast distances and enormous age!

What really is this idea of a Big Bang?  Why is it a "confirmed truth?"  How can we know anything about what supposedly happened almost 14 billion years ago?  What are the questions inspiring today's, and perhaps tomorrow's, cosmologists to work with dogged determination toward a deeper understanding?   

Join me at Big Bang Science at COSI, for a celebration of science, curiosity, discovery and the beauty of the cosmos.  I'll do a presentation and then address the above questions and follow with a chance to talk to Ohio State University scientists who are researching these and related questions.  Here is the info:

Confirmed Truths and Remaining Mysteries Regarding the Origin of the Universe
Sunday, February, 23, 3-4pm: public lecture by Prof. Knox in the COSI Extreme Screen Theater

Lloyd Knox is a Professor of Physics at the University of California at Davis.  He is leading the U.S. component of the effort to determine the basic parameters of the cosmos from the data acquired by the Planck satellite, which was launched in 2009.  He is well known as an excellent speaker for both scientific and public audiences.

Big Bang Science Discussion
Sunday, February 23, 4-5pm: public discussion with Prof. Knox and CCAPP scientists, COSI Atrium

Meet the speaker and scientists from Ohio State University's Center for Cosmology and AstroParticle Physics (CCAPP).  Ask questions about the universe and its amazing contents, hear about exciting research being done at The Ohio State University, and find ways to further your interests in science.

This two-part event is being organized jointly between COSI and CCAPP (, and is part of broader efforts to bring members of the public and local scientists together.

Both events are free, open to all, and targeted to be interesting to broad audiences. Admission to other COSI exhibits and parking are not included.  See and for further details.

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