John F. Kennedy was elected to Congress in 1946. Abraham Lincoln was elected President in 1860. John F. Kennedy was elected President in 1960. Both were particularly concerned with civil rights. Both wives lost a child while living in the White House. Both Presidents were shot on a Friday.
An asteroidâs composition is mainly determined by how close it is to the Sun. The asteroids that are nearest the Sun are mostly made of carbon, with smaller amounts of nitrogen, hydrogen and oxygen, while the ones further away are made up of silicate rock.Silicates are very common on Earth and in the Solar System.ut other materials have been found in asteroids, as well. Overview. Asteroids are solid, rocky and irregular bodies that are the rocky remnants of the protoplanetary disk of dust and gas that formed around our young Sun over 4.5 billion years ago.
Asteroids are rocky-metallic objects which range in size from about the size of pebbles to around 600 miles (~1,000 km) across. Although they orbit the Sun, they are too small to be considered planets. Asteroids are thought to be leftover material from the formation of our Solar System. Most are found in the Asteroid Belt, a doughnut-shaped ring which lies between the orbits of Mars and Jupiter. Astronomers have also identified a group of asteroids whose orbits cross Earth's orbit.