They were the first devised by Benjamin Franklin in 1784. The first eyeglass frame temples were made by Spanish craftsmen in 1600's. They affixed ribbons of silk or strings to the frame and loop them over the user's ears. The new types of eyeglasses carried out to China by Spanish and Italian missionaries.
The Asteroid Belt is located between the orbits of Mars and Jupiter: so it can only be one of the two planets that is the closest to it. Mars is located approx 250 million km from the Sun and Jupiter - 750 million km from the Sun. Mars is closer: so the correct answer is: Mars is the planet closest to the Asteroid belt.
Asteroid Belt. About 2-4 AU (186-370 million miles) away from the Sun, between the orbits of Mars and Jupiter, is a region called the Asteroid Belt. This region is a ring of tens of thousands of relatively small rocky objects called Asteroids.Asteroids can vary greatly in size.ot all asteroids are in the Asteroid Belt. Sometimes collisions between asteroids, combined with the gravitational effects of Jupiter, can cause asteroids to leave the belt. If an asteroid comes within 1.3 AU (121 million miles) of the Sun, it is called a Near-Earth Asteroid (NEA).