🌤 Why Is the Sky Blue?

In this A1-level Reading Challenge, students discover why the sky is blue. Written in very short, clear sentences using present simple and basic vocabulary, the article explains sunlight, the spectrum, wavelengths, and Rayleigh scattering in a way that A1 learners can follow. It also covers why sunsets are red, why the Moon's sky is black, why Mars has blue sunsets, and why shadows on snow are blue.