Add/Subtract T-Shirt

Black

Use “powers of ten” to zoom in from our local cluster of galaxies to North America.

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You Want Proof T-Shirt $24.00 – $25.00

Ash

Featured on the cover of Sidney Harris’s You Want Proof book of science cartoons.

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Glows in the dark

Tesla T-Shirt $24.00 – $25.00

Dark Chocolate

Glow-in-the-dark lightning bolts honor a genius whose contributions made today’s electric grid possible.

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Printed Front and Back

Black Hole Shirt $24.00 – $47.00

Black

Small Medium Large X-Large XX-Large +$1.00 Youth Small 6-8 Youth Medium 10-12 Youth Large 14-16 Sweatshirt Small Sweatshirt Medium Sweatshirt Large Sweatshirt X-Large Sweatshirt XX-Large +$2.00

Front: Black Hole with Schwarzschild’s Radius / Back: Maxwell’s Equations of Light

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Missing Mars Lander T-Shirt $24.00 – $25.00

Ash

NASA asks for help from the public in finding their missing Mars Lander.

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Spleen T-Shirt $24.00 – $25.00

White

Another great medical cartoon from Sidney Harris and Cotton Expressions.

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Glows in the dark

Stalactites T-Shirt $24.00 – $25.00

Purple

Glow-in-the-dark design answers the most common question asked by visitors to caves.

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Glows in the dark

Periodic Table T-Shirt $24.00 – $25.00

White