http://www.haydenplanetarium.org/

http://www.amnh.org/rose/haydenplanetarium.html

http://travel.yahoo.com/p-travelguide-2737362-hayden_planetarium_new_york_city-i

http://www.haydenplanetarium.org/resources/ava

http://en.wikipedia.org/wiki/Hayden_Planetarium

http://www.amnh.org/rose/

http://www.expedia.com/pubspec/scripts/eap.asp?GOTO=HOTSEARCH&SearchType=Place&SearchArea=Attraction&PlaceName=Hayden+Planetarium&eapid=13290-1&semcid=13290-1&kword=ATT&kend=1

http://www.fieldtrip.com/ny/27695101.htm

http://www.cityinsights.com/nyhayden.htm

http://www.yellowpages.com/info-LMS59050308/Hayden-Planetarium

http://www.orbitz.com/App/PerformDatelessHotelSearch?keywordPIB=Hayden+Planetarium+New+York+New+York+United+States

http://newyork.citysearch.com/profile/7170652/new_york_ny/hayden_planetarium.html