No, they are not. They come from regions of asteroids that exist within our own solar system. Long period comets, the ones that appear once in thousands of years, probably come from the Oort Cloud, a spherical cloud of small icy asteroids believed to exist at the farthest outer reaches of the solar system. Short period comets like Halley's probably come from the Kuiper Belt, a ring of asteroids just beyone Neptune's orbit. The minor planet Pluto is the most famous Kuiper object. Not all objects in the Oort Cloud and Kuiper Belt are comets; in fact most are not.
There are no comets that orbit the planet Mars. Comets, some, orbit the sun. Mars on the other hand does have two moons, Phobos and Deimos.
Comets, "nebulae", globular clusters, and galaxies could all fit that definition, as could a naked-eye view of the milky way.
That is related to their past history. Many galaxies have undergone collisions with other galaxies; this takes out most of the interstellar gas, and the galaxies can no longer form new stars. If I remember correctly, such galaxies will change into elliptical galaxies.That is related to their past history. Many galaxies have undergone collisions with other galaxies; this takes out most of the interstellar gas, and the galaxies can no longer form new stars. If I remember correctly, such galaxies will change into elliptical galaxies.That is related to their past history. Many galaxies have undergone collisions with other galaxies; this takes out most of the interstellar gas, and the galaxies can no longer form new stars. If I remember correctly, such galaxies will change into elliptical galaxies.That is related to their past history. Many galaxies have undergone collisions with other galaxies; this takes out most of the interstellar gas, and the galaxies can no longer form new stars. If I remember correctly, such galaxies will change into elliptical galaxies.
The revole around the sun
it is the time when the tail is facing the north of the other comets like this <halleys tail is north of the other comets when they go > this way
Stars, planets, moons, comets, asteroids and other phenomena.
The other planets, stars, galaxies, meteors, comets, and asteroids.
Look up in the sky with a good telescope, and find things that are too fuzzy-looking to be stars. Some of them are nebulas, and a few may be comets - but a lot of them are other galaxies.
Celestial bodies include stars, planets, galaxies, nebulae, comets, meteoroids, satellites, and asteroids.
you can find many things like stars, galaxies, comets, planets
Asteroids, some comets, and dwarf planets are classified as minor planets. Stars and galaxies are much larger than planets There are dwarf planets and these are Ceres Pluto and Eris.
Asteriods and meteors. everything you see in the night sky is classed as a heavenly body, planets, stars, moons and galaxies
Galaxies are visible to the naked eye, so early observers no doubt saw them. But without telescopes, even the sharpest vision only showed them a small smudges in the sky. In the late 1700s, the French astronomer Charles Messier couldn't have cared less about other galaxies, and in fact, didn't know what they were. Messier was a comet hunter, and finding comets was his great joy in life. To speed his discovery of potential comets, Messier created a catalog of smudgy comet-like things in the sky that were NOT comets, so that he could quickly reject them the next time he saw them. These Messier Catalog objects were, predominantly, other galaxies, and many of the galaxies that we still study are named or referenced by their numbers in Messier's catalog. For example, the Great Nebula in Andromeda, sometimes called the "Andromeda galaxy", is item number 31 on Messier's list; M31 in Andromeda.
Astronomy is the study of the universe (celestial objects such as stars, planets, comets, nebulae, star cluster, and galaxies).
to explore many different planets, galaxies, comets, possible planets we can live on, etc.
Meteors (two to three an hour on a typical clear night), comets on occasion, and if you have a good telescope, other galaxies and the occasional planetary nebula.
Look up into the sky. Stars, planets, comets, asteroids, galaxies, etc., are celestial bodies.