Astronomy

Why is the Moon exactly the same apparent size from Earth as the Sun? Surely this cannot be just coincidence; the odds against such a perfect match are enormous.

The Sun and Moon exhibit nearly identical angular sizes in Earth's sky due to a coincidental ratio of their respective sizes and distances from Earth. This near-identical angular size allows for total ...
Astronomy

How large does the Sun appear from Mercury and Venus, as compared to how we see it from Earth?

The Sun's angular diameter, as observed from Earth, is approximately 0.5°. This is based on Earth's average distance of 93 million miles (150 million km) from the Sun. From Mercury, at an average ...