* Earth's Rotation: The Sun appears to move across the sky because the Earth is rotating on its axis. This rotation takes about 24 hours to complete.
* Angular Speed vs. Linear Speed: The 600 mph figure often quoted refers to the *angular speed* of the Sun, meaning how fast it appears to move across the sky. However, this doesn't take into account the vast distance to the Sun.
* Actual Speed: The Earth is actually orbiting the Sun at a much faster speed, approximately 67,000 miles per hour.
So, while the Sun appears to move across the sky at a rate of about 15 degrees per hour, it's actually our planet's rotation that creates this illusion.
