What are comets made of?
Gravity holds stars and planets together, but what holds the other (little stuff) together.
Ionic bonds. And it turns out that are only 3 that seem to work:
Water (ice), Silicon oxide rock, and ferromagnetic metals (iron, nickel, cobalt).
Comets don't seem to have much metal, so "dirty snow-ball".
In 1949, Fred Lawrence Whipple theorized that the nucleus of a comet is made of frozen water, rocky debris, and frozen gases. This was called the "icy comglomerate" theory and is now known as the "dirty snowball" theory.
However, in 1999, the Stardust spacecraft was launched and in 2004 it retrieved tiny particles from the comet Wild-2's surface and came back two years later in a capsule, landing in Utah. Minerals that formed in the presence of liquid water were discovered, proving that, at some point, pockets of water had existed on the comet. This disproved the "dirty snowball" theory.
A dirty snowball is another name for a comet.
Comets are normally refered to as "Dirty Snowballs"
Comets are often referred to as "dirty snowballs" because they are mostly composed of ice with some rock, dust, and frozen gasses all blended together.
A comet which orbits the sun is often considered to be ice mixed with debris, or a large dirty snowball
filthy ball of frozen water ?
comet
A comet.
A comet
comet
The part before the tail it is fire then rock next snowball then last is the tail
LOL, that can be a lot of things. I suppose you could kind of say that Mars is a large, dirty red snowball. Pluto could also be, but these probably aren't the answers you're looking for. "Large dirty snowballs" that orbit the sun are called "comets". There are intersting things about them. For one, comets don't orbit our solar system the way planets do. Instead, they can come in from all sorts of weird angles. For more information about astronomy, visit NASA.gov and run a search. Did you know that the solar system now only has 8 official planets? ~Apple Juice
All comets, we believe, are composed of a lot of ices such as frozen carbon dioxide, nitrogen, oxygen, water, and other gasses, with a lot of dust and some rocks. Science fiction writers Jerry Pournelle and Larry Niven described a comet as a "dirty snowball".
it looked like a giant snowball
No, comets have been measured and their constituent material has been characterized. Calling it a dirty snowball is more a model.
A dirty snowball is a snowball that is covered in some type of filth. It is also what many people refer to a comet as.
because they are made of rocky balls and ice.
Yes.
A dirty snowball is a snowball that is covered in some type of filth. It is also what many people refer to a comet as.
comet
A comet has this nickname.
Comets.
Comets.
The Comets.
comets!
A comet, a dirty snowball actually.