Personalized Astronomy Future Astronomer Toddler Long Sleeve T-Shirt. Future astronomer Toddler Long Sleeve Tee - Black with telescope and stars astronomy job design for boys or girls A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.