As close as they want - including crashing into it. Gravity and inertia control their orbits.
Comets orbit the Sun.
Comets are balls of ice and dust in orbit around the Sun. The orbits of comets are different from those of planets - they are elliptical. A comet's orbit takes it very close to the Sun and then far away again.
Those astronomical objects are called comets.
The particles of dust and ice that orbit the sun are called comets. They are small solar system bodies which when close enough to the sun, they display a temporary atmosphere.
No. The light we see from comets is reflected sunlight. Comets are composed of ice and dust, and do not give off any radiation, visible or otherwise. Because of their high ice content, and the water vapor they trail as they travel toward the sun, they are highly reflective.
No. Mercury has nothing to do with comets. Comets are objects that orbit the sun independent of the planets.
Earth
when it gets close to the atmosphere
They get two close to the sun and some breaks off.
comets orbit the sun
Comets have their own orbits in our solar system around the sun. They don't come close to the earth.
Comets orbit the Sun.
Comets are balls of ice and dust in orbit around the Sun. The orbits of comets are different from those of planets - they are elliptical. A comet's orbit takes it very close to the Sun and then far away again.
The sun's gravity holds comets in their orbits.The sun's radiation heats comets causing vaporization of their ices.The sun's solar wind blows vaporized ice and dust particles away from the comets forming the tail.The sun's visible light reflects from the comet and its tail, making them visible.The sun's magnetic field deflects ions in the tail, causing separation into two tails - the dust tail and the ion tail.If a comet comes too close to the sun, the comet will hit the sun and be destroyed.
No. Comets orbit the sun.
Those astronomical objects are called comets.
The particles of dust and ice that orbit the sun are called comets. They are small solar system bodies which when close enough to the sun, they display a temporary atmosphere.