Yosemite NP Bear Text Ornament Astronomy The iconic radioactive symbol is

The iconic radioactive symbol is actually for a certain type of radiation - Ionizing Radiation

we're steadily learning more and more about our galaxy

grown and milled in the USA

New Mexico's Carlsbad Caverns' Bat Flight Program offers visitors the sight of  thousands of bats - the only true flying mammal - taking flight from the cavern at night

Although it's a borough of NYC and not necessarily it's own city

Yosemite NP Bear Text Ornament Astronomy The iconic radioactive symbol isYosemite NP Bear Text Ornament Approximate Dimensions: 4 1 2" x 3 1 2" x 3 16" Black Walnut wood. USA grown hardwoods are a renewable, biodegradable and sustainable resource.