The outer Oort cloud. (The inner Oort cloud is believed to be disk-shaped.)
Comets.
Comets
Houston Comets ended in 2008.
Houston Comets was created in 1997.
Comets have been in space since the start of time. In the 1800's there were many people who knew comets where a space phenomena, there were people who thought it was a message from the gods. What people thought of the comets depended on their cultural beliefs.
Mercury has about the most perfectly spherical shape, but Saturn has the leastspherical shape (next least spherical is Jupiter).
The Oort Cloud of comets.
Comets originate from the Oort cloud, a spherical shell of icy bodies at the outer edges of our solar system. These comets can be perturbed and sent into the inner solar system where they become visible as they approach the Sun.
.... errr - well comets.
The spherical region of comets on the outer edges of the solar system is known as the Oort Cloud. It is believed to be a vast, hypothetical cloud of icy bodies that extends far beyond the orbit of Pluto, serving as a source for long-period comets. The Oort Cloud is thought to contain trillions of comets, which are remnants from the early solar system. Its exact boundaries and composition remain largely theoretical, as it has not been directly observed.
It is estimated that there are trillions of comets in the Oort cloud. These comets are believed to be remnants from the early solar system and are located in a spherical region surrounding the solar system at distances ranging from about 2,000 to 100,000 astronomical units (AU) from the Sun.
short period comets
the Oort Cloud, which is a spherical shell of icy objects located at the outermost reaches of the solar system. These comets are believed to originate from the early days of the solar system and occasionally get gravitationally nudged towards the inner solar system.
No, comets are generally much smaller than planets. Comets are composed of ice, dust, and rocky materials and can range in size from a few hundred meters to tens of kilometers in diameter. In comparison, planets are much larger celestial bodies that orbit stars and have a defined spherical shape.
snowballs
Earth is much more massive than asteroids and comets, and thefore has much stronger gravity, which pulls it into a spherical shape. Most asteroids and comets do not have strong enough gravity to do this.
long period comet