Before we begin, you should know this: as we are enrolled in Redbubble’s affiliate program, we may receive a compensation if you were to buy any of these t-shirts by using our links. So please click :-)

TShirtGifter presents: When I was your age ... Pluto was a *planet*.

When I was your age ... Pluto was a *planet*.

Next design →

Rate this design

Carticon 0f1ab033fd094e67ba89ead06542b0279443610e0263bd0cf5f0c92852458fd6Preview sizes and colors →

Similar Tees

ingredients: Keep Calm and Trust God Stormtrooper Burlesque Imagination Mash-up techno tree Strawberry Girl One Smart Cookie T-Shirt Ipswich (White)

About this T-Shirt

Poor old Pluto. Demoted from planet to dwarf planet, or worse … panetoid!

In 2006 the International Astronomical Union ruled that Pluto was no longer a planet, leaving just eight planets proper in our Solar System.

For the record, a planet is:
“A celestial body that (i) is in orbit around the Sun, (ii) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (iii) has cleared the neighbourhood around its orbit.” (IAU Resolution B5)

Pluto satisfies (i) and (ii), but not (iii): there are other things sharing its orbit around the Sun. Bigger planets, with stronger gravitational fields, plough everything else out of the way as they go around the Sun. Pluto is just too small to make that kind of impact.

Off you go now, Pluto. It’s been fun.

⇓ Show more

About us

T-Shirt Gifter is a project about finding that perfect t-shirt. Rate some designs, and - if the computer gods crunch away at the right numbers - more t-shirts that you like should come your way.

Newsletter

Join our newsletter to get special offers, free promotions and more, sent directly to your inbox.