Starwhale's sharp eyes catch a trail across a seemingly barren planet. As he follows the trail his excitement builds as he gets closer and closer to catching up to whatever it is. And once he catches up to it he's surprised to learn not only what it is but how long it has been there. 

Special Episode Series: This episode is part 1 of a 3-part series about exploring neighboring planets. This episode airs Saturday 2/13,  with the next two installments on Tuesday 2/16, and Thursday 2/18. The final story will air at the touchdown time of NASA's Perseverance Rover's on Mars (2/18/2021)

Themes: Probes, Landing Crafts, Rovers (even though this isn't about Mars specifically)