Author/astrophysicist Jeffrey Bennett has taught at every level from pre-school through graduate school and is now a full-time writer/speaker/educator focusing on student and public understanding of math and science. He is the lead author of best-selling college textbooks in astronomy, astrobiology, mathematics, and statistics; of six books for children that have all been read by astronauts from the International Space Station for NASA’s Story Time From Space program, and of critically acclaimed books for the general public on topics including the search for extraterrestrial life, Einstein’s theory of relativity, math and science teaching, and global warming. His writing has been recognized with numerous awards, including the prestigious Science Communication Award from the American Institute of Physics. Among other endeavors, Dr. Bennett has served as a Visiting Senior Scientist at NASA Headquarters; he proposed and co-led development of both the Colorado Scale Model Solar System at CU-Boulder and the Voyage Scale Model Solar System on the National Mall in Washington, DC; and he created the free Totality app to help educators and the public prepare for and understand upcoming total solar eclipses. He is currently working on a free, digital Earth and Space Science curriculum for middle school students, posted at Learn more at his personal web site,

IDSW Presentation Description:
Scale of the Universe – If you could hold the Sun in your hand, where would we find the planets and other stars? Astrophysicist Jeffrey Bennett will discuss the remarkable scale of the universe in both space and time, so that you’ll see what it REALLY means when we say that something is “astronomical” in size.”