Did the Earth Once Have Two Moons?

The moon has always been an object of mystic interest to humans. Some nights we see it clearly and bright; during full moon and when the sky is clear. Other nights we look for the moon in vain, for instance when the sky is clouded over. Interestingly we only ever … Continue reading

Young Children See the Moon Illusion

Why does the full moon seem bigger when it’s near the horizon than when it’s high in the sky? The moon illusion, which also applies to the perception of the size of the sun in the sky, has intrigued artists and puzzled psychologists for many years. The moon illusion refers to the … Continue reading