Should We Worry About Comet ISON ? A recent public inquiry regarded the safety of Comet ISON, which is approaching the Sun and expected to arrive around Thanksgiving Day. The following is the response given to this question, by Glenn A. Walsh, Project Director of Friends of the Zeiss. http://spacewatchtower.blogspot.com/2013/10/should-we-worry-about-comet-ison.html gaw Glenn A. Walsh, Project Director, Friends of the Zeiss < http://buhlplanetarium.tripod.com/fotz/ > Electronic Mail - < [log in to unmask] > SpaceWatchtower Blog: < http://spacewatchtower.blogspot.com/ > SPACE & SCIENCE NEWS, ASTRONOMICAL CALENDAR: < http://buhlplanetarium.tripod.com/#news > Twitter: < https://twitter.com/spacewatchtower > Facebook: < http://www.facebook.com/pages/SpaceWatchtower/238017839577841?sk=wall > Author of History Web Sites on the Internet -- * Buhl Planetarium, Pittsburgh: < http://buhlplanetarium.tripod.com/ > * Adler Planetarium, Chicago: < http://adlerplanetarium.tripod.com/ > * Astronomer, Educator, Optician John A. Brashear: < http://johnbrashear.tripod.com/ > * Andrew Carnegie & Carnegie Libraries: < http://andrewcarnegie.tripod.com/ > * Civil War Museum of Andrew Carnegie Free Library: < http://garespypost.tripod.com/ > * Duquesne Incline cable-car railway, Pittsburgh: < http://inclinedplane.tripod.com/ > * Public Transit: < http://andrewcarnegie2.tripod.com/transit > ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).