SOLAR SYSTEM

Detailed explanation-1: -A meteor is a meteoroid that burns and vaporizes upon entry into the Earth’s atmosphere, commonly called a shooting star.

Detailed explanation-2: -COMETS vaporize when their orbits take them close to the Sun. Comets do not melt in the strict sense of becoming liquid. However, since they are composed partly of ice and other volatile compounds, they vaporize (turn directly to gas) when warmed in the vacuum of space by passing near the sun.

Detailed explanation-3: -As a comet approaches the sun, it heats up very quickly causing solid ice to turn directly into gas via a process called sublimation, according to the Lunar and Planetary Institute.

Detailed explanation-4: -When comets get closer to the Sun, they lose material with each orbit because some of their ice melts and vaporizes. Asteroids typically remain solid, even when near the Sun.

Detailed explanation-5: -Sungrazing comets are a special class of comets that come very close to the sun at their nearest approach, a point called perihelion. To be considered a sungrazer, a comet needs to get within about 850, 000 miles from the sun at perihelion.