A star is so distant that its light reaches us as a single narrow beam, and poc of wa and co air i the atmos bend th beam th way a that. T result i the flicker we call twinkling. A planet is far closer, so it arrives as a small disc rather than a point, and the many beams that make up the disc are bent in different directions at the same moment. The wobbles cancel, and the light we see holds steady.

Type only the missing letters. Each box is one letter, and the number of boxes matches the letters that are missing.