powderskye

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New telescope desig...

powderskye 7 comments

Earth's Magnetic Fi...

powderskye 6 comments

PN Flag

powderskye 0 comments

How A Trumpet Works

powderskye 79 comments

Trombone

powderskye 28 comments

Devil's Tower

powderskye 21 comments

Tatooine Sunset

powderskye 23 comments

now you can eat sun...

powderskye 9 comments

Simple Polonium-Plu...

powderskye 2 comments

Lightspeed Proton S...

powderskye 1 comments

The Heart Nebula

powderskye 1 comments

GRAV Snow

powderskye 17 comments