SOLAR SYSTEM

Detailed explanation-1: -By studying comets, scientists hope to learn how planets formed and even how life may have evolved on Earth. Samples of cometary dust from NASA’s Stardust mission revealed the presence of certain minerals.

Detailed explanation-2: -Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids.

Detailed explanation-3: -Comets may have brought water and organic compounds, the building blocks of life, to the early Earth and other parts of the solar system.

Detailed explanation-4: -Comets are frozen leftovers from the formation of the solar system composed of dust, rock, and ices. They range from a few miles to tens of miles wide, but as they orbit closer to the Sun, they heat up and spew gases and dust into a glowing head that can be larger than a planet.

Detailed explanation-5: -Asteroids can serve as pit stops – and provide resources – for future space exploration. Some asteroids or comets may be hazards to Earth. Asteroids and comets may have delivered the elements of life to Earth. Essentially, asteroids were the building blocks of planets. More items •14-Nov-2018