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About Event

Tue 6 Mar 2007


Space Telescope Science Institute (STScI)
3700 San Martin Drive
Baltimore, MD 21218


8:00 PM - 9:30 PM EST

Contact Information

Have questions? Please contact STScI.


Speaker: Benne Holwerda (STScI)

Our Milky Way Galaxy is outlined not only by the countless stars in the night sky, but also by dark lanes where stars are strikingly few. These dark regions are dust clouds in our galaxy that dim, redden, and even block out the light from stars behind them. In a similar manner, dust clouds in a nearby galaxy will block light coming from more distant galaxies. Dr. Holwerda will present his research that uses the number of background galaxies in Hubble images to measure the dust in a foreground spiral galaxies. Like Sherlock Holmes' observation about the dog who didn't bark, this is an investigation of the galaxies that don't shine.


The 2007 Public Lecture Series offers talks on a diverse selection of cosmic topics held the first Tuesday of every month in the STScI John N. Bahcall Auditorium. Admission is free and free parking is available in the lot across the street. Find information related to driving directions and relevant transportation resources on our Getting Here page. Further information and directions are available by calling 410-338-4700.

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