[Scroll to see color & style options] - The Pioneer 10 & 11 missions were launched in 1972 & 1973 with the objectives of visiting and studying Jupiter, Saturn and the outer reaches of the solar system.

As the first two spacecraft designed to leave our planetary solar system (in 1983 and 1990, respectively) Pioneer 10 & 11 carry a graphic message engraved on a 6 x 9 inch gold anodized plaque bolted to the spacecraft's body.

On the plaque a man and woman stand in front of an outline of the spacecraft. The man's hand is raised in a gesture of good will. The images of the man and woman were based on an average of adult humans' body measurements.

The key to translating the plaque lies in understanding the breakdown of the most common element in the universe - hydrogen. This element is illustrated in the left-hand corner of the plaque in schematic form showing the hyperfine transition of neutral atomic hydrogen. Anyone from a scientifically educated civilization having enough knowledge of hydrogen would be able to translate the message.

1. Decide which is your preferred shirt color (or go for the coffee mug).
2. Click the big green button.
3. Here you pick the size & you can order multiple shirts if you want (saves on shipping).
4. Hit the Checkout button to give your details.
5. You're done. Your unique custom printed T-shirts will arrive in the mail.

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  • $0 for the first apparel item and $0 for each additional apparel item.
  • $0 for the first phone case and $0 for each additional phone case.
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  • $0 for the first die cut sticker and $0 for each additional die cut sticker.
  • $0 for the first hoodie/sweatshirt and $0 for each additional hoodie/sweatshirt.
  • $0 for the first Twitch hoodie and $0 for each additional Twitch hoodie.
  • $0 for the first mug and $0 for each additional mug.
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pioneerw