Collection: T-Shirts

Discovery highlights 39 significant moments of scientific breakthroughs that measurably improved the human condition and brought about transformative changes in our world.   Style is women’s relaxed fit, pre-Shrunk, 100% Cotton.

N = R* • fp • ne • fl • fi • fc • L. The Drake Equation was first presented by Frank Drake in 1961 and identifies specific factors thought to play a role in the development of extra-terrestrial civilizations. Get the tee and help spread the word that thanks to numerous advancements in technology; we are finally putting down hard numbers where once there were only variables.

Seventeen selected designs at a discounted 50% off the regular price. As of May 13, featuring the newly added designs: Eclipse-O-Rama (Texas), Apollo LRV (Lunar Roving Vehicle), One Small Step, Sci Not Fi, Starship Congress, The Age of Regolith, and many other designs from the archive. GO TO THE WOMEN’S 50% PAGE HERE Please be aware that not all sizes may be available for each design. If you cannot find the size or design you are looking for, unfortunately it is likely not available.

It is the evolution of space missions. From the tiny Sojourner to Spirit/Opportunity to Curiosity, eventually leading to the first humans on Mars. Planetary Society’s Advocacy group knows that every mission counts and is why they are fighting to get the most important missions the funding dollars they need to reach their goals.

Make their mission your own. To explore, understand, and explain the origin and nature of life in the universe, and to apply the knowledge gained to inspire and guide present and future generations.

Voyager 2 holds the record for most celestial bodies observed in a single mission and Voyager 1 became the first man-made object to enter interstellar space.

T-shirt features 25 historic rockets, from the ancient "Pigeon" of Archytas to the modern SpaceX Starship Super Heavy. To capture the relative scale of each engine, we've applied a sliding scale, allowing us to display even the smallest of rockets with enough detail to appreciate their historic significance.

We are celebrating the holidays as only robots can. Now featuring 51 different robots from film, television, literature, comics, toys and more. Can you figure out all 51? As if that were not enough- it reads “HAPPY HOLIDAYS” on back in ASCII.

Fossilized, not forgotten. Dinosaurs still roar in the hearts of kids and paleontologists everywhere. Originally created for our Dinosaur Extinction Enamel Pin Set.

This is a test market item. Depending on performance this may be a very limited edition! I said I’d be back… and now I’m on your chest.

This is a test market item. Depending on performance this may be a very limited edition! Well, this certainly is a bleak outcome. Unless you are an ape. 

BACK IN STOCK AFTER 6 YEARS! 59 celebrated creatures from the various genres of horror, fiction, fantasy, and even comedy. As usual, the reference sources are wide-ranging from film, television, children’s literature, video games and gaming, comics and more.  

IT IS BACK!What if it were the 70's again and robots ruled the punk scene? Order robotRock now and be the first on your block to be asked what that says in Japanese.

This is a test market item. Depending on performance this may be a very limited edition! It’s a real good thing we made this a t-shirt… A real good thing. 

This is a test market item. Depending on performance this may be a very limited edition! The Devil is in. Shall we ask another question?

This is a test market item. Depending on performance this may be a very limited edition! I got the crazy feeling I’ve seen this t-shirt before.

This is a test market item. Depending on performance this may be a very limited edition! Wanna go for a ride!?

Let’s explore the UNIVERSE together. 

BACK IN STOCK! 31 pop, rock and alternative rockers whose careers peaked between the years 1980 and 1989. Bonus 16 classic '80s videos featured as well. Note: The SML and MED slim fits are intended to used as XXS and XS options.

IT IS BACK IN STOCK! Twenty-six rock, funk and punk legends whose careers peaked between the years 1972 and 1982. All featured as a massive super-group on a surreal five-layered stage. Note: The SML and MED slim fits are intended to used as XXS and XS options. See this design also as a print here. 

BACK IN STOCK! 31 pop, rock and alternative rockers whose careers peaked between the years 1980 and 1989. Bonus 16 classic '80s videos featured as well.

Here are some great tees left over from our back catalog of retired designs. Buy anything from our store and take one FREE!. There’s a lot in here, so browse the titles and the image with update for a visual. No coupon required. See styles for women.

Twenty-Six selected designs at a discounted 50% off the regular price. Including the newly added Eclipse '24 and Eclipse-O-Rama (Texas). Also still in stock are weScare (32 Famous Monsters), Video Rock (32 Eighties Pop-rockers), Philae (The Rosetta Lander), The Heart (podcast), Memory Palace (podcast), Planet or World, Big F**king Rocket Pop, and POTUS Red. In very low supply are: The Future has Begun 2021, Build a Starship, Curiosity (original version), POTUS Blue, Radiolab, and Planetary Society 40th. Many images show a unisex tee, but ignore this. All in styles on this page are cut for Women. GO TO MEN’S 50% PAGE HERE!

NEW: Design has been updated to now include the message "We're all crew of Spaceship Earth" and URL on the back! Yuri’s Night is a global celebration of humanity’s past, present, and future in space. Parties and events are held around the world every April in commemoration of Yuri Gagarin becoming the first human to venture into space on April 12, 1961 with Vostok 1 as the first spaceship.