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Upcoming Events
 


Next public star party May 11th (8pm)

Valley Forge National Historical Park
DVAA Public Star Parties
2019 Star Party Flier
Weather Hotline:  484-367-5278


Recent Blogs
Recent Blogs

M87:  Relativistic jet from super-massive black hole (Richard Steinberg)
Slideshow
M87 Relativistic jet from super-massive black hole