In the third book in the chapter book series about a young Indian American girl who loves science and has a big imagination, Sejal and the gang soar through outer space—perfect for fans of The Magic School Bus and Over the Moon!
Sejal's puppy eats the page in her notebook with her best ideas. Her little brother throws a tantrum over string cheese. Sometimes, Sejal wishes she could escape being a big sister. After an embarrassing snot incident, her older cousin Ash is ready to leave the planet, too.

Ash has been working on a very cool science project about a theory that it rains diamonds on Neptune. Treasure hunting on another planet sounds like the perfect out-of-this world adventure to Sejal! But getting to Neptune might be harder than she and Ash think, especially when they find a couple of stowaways in their spaceship...