Why can't we see stars during the day?

Answer: Sunlight is too bright

Sunlight is too bright ✓ — Correct! Stars are always in the sky, but during the day the Sun is so bright it overwhelms them. The Sun is much closer (93 million miles vs. Trillions of miles for other stars), so it appears millions of times brighter. Sunlight scatters in Earth's atmosphere, creating bright blue sky that drowns out the faint starlight. It's like trying to see a candle flame next to a spotlight - the candle is still lit, but you can't see it. At night, without the Sun's glare, stars become visible.

Stars move to night side — Wrong. Stars don't move to the night side of Earth. The stars are so far away that Earth's rotation doesn't move us significantly closer or farther from them. The same stars are above us day and night, but we can only see them at night when the Sun isn't overwhelming their light.

Atmosphere blocks starlight — Wrong. The atmosphere doesn't selectively block starlight during the day. In fact, atmospheric scattering of sunlight is what makes the daytime sky bright, which is why we can't see the relatively dim stars. At night, without sunlight to scatter, the atmosphere doesn't prevent us from seeing stars.