Beacuse asteroids are chunks of solid rock - Comets are primarily lumps of ice - which melts as it nears the sun !
Because they do not have volatiles in them to form a coma as to comets.
guess wut comets have 3 parts the head [nucleus] and the tail obviously but the third is the coma that holds the gasses that make the tail meteors are and can become meteors meteorites and meteoroids meteors are passing through our atmosphere meteroids are meteors in space meteorites have hit earth asteroids are basically meteors that have reached 6 miles wide 3 of the biggest ones are considered dwarf planets ceres [eris] vesta and sedan
It is called a Coma.
Some comets develop a cloud of hydrogen gas around them when they get close to the sun, due to the sun's radiation breaking apart water molecules in the comet's icy nucleus. This creates a temporary hydrogen cloud known as a coma. Asteroids generally do not have hydrogen clouds since they are composed of rock and metal, lacking the icy material that comets have.
okay i think that they are the same because arnt comets the same as shoting stars and shoting stars are just asterids that came to close to the earth so i think that they are the same. but you might want to ask someone before using this information im only 13. ok no! your way wrong soory bro.. comets have a tail... asteroids don't comets are made up of mostly rock and ice...and asteroids of rock and metals. and by the way, a shooting star is an meteor not and asteroid
It's assumed those asteroids that once were comets have had the ice and dust burned off and now have nothing coming off to make a tail.
The small bodies of water that travel through space are called comets. Comets are icy bodies that release gas and dust as they orbit the Sun, creating a glowing coma and sometimes a visible tail.
Nucleus coma tail
Comets are icy bodies that develop a glowing coma and tail when they approach the sun. Meteoroids are small rocky or metallic bodies that enter Earth's atmosphere and burn up, producing a meteor or shooting star. Asteroids are larger rocky or metallic bodies orbiting the sun, primarily found in the asteroid belt between Mars and Jupiter.
1-nucleus 2-coma 3-tail
Comets are made of mainly 3 parts -dust tail, ion tail and coma
Comets are composed mainly of ice, dust, and rocky material, often forming a glowing coma and tail when they approach the Sun due to the sublimation of their icy components. Asteroids, primarily found in the asteroid belt between Mars and Jupiter, are rocky or metallic bodies that vary in size and shape. Both comets and asteroids are remnants from the early solar system, providing insights into its formation and evolution. Their study helps scientists understand planetary formation processes and the history of our solar system.