They seem to be bits left over from the formation of the Solar System about 4.5 billion years ago.
Comets are Comets and Asteroids are Asteroids
Comets are considered primitive bodies that have remained relatively unchanged since the formation of the solar system, providing valuable information about its early history. By studying the composition of comets, scientists can learn about the conditions and materials present in the solar system when it was forming, shedding light on its evolution over time. Tracing the trajectory of comets can also reveal clues about the solar system's ancient environment and the processes that have shaped it.
Comets!
comets are formed from ice and gases
No. Comets are not moons as they orbit the sun, not planets.
All the comets that have been seen in history were in the solar system and most still are.
David A. Seargent has written: 'Comets' -- subject(s): Comets 'The greatest comets in history' 'Planet Earth and the design hypothesis' -- subject(s): Intelligent design (Teleology)
Bill Haley and the Comets rocked around the clock in 1955. And the rest... is history!
The singular form is comet, the plural form is comets, the possessive plural is comets'. Example: The comets' paths will not cross.
Comets are Comets and Asteroids are Asteroids
Comets are considered primitive bodies that have remained relatively unchanged since the formation of the solar system, providing valuable information about its early history. By studying the composition of comets, scientists can learn about the conditions and materials present in the solar system when it was forming, shedding light on its evolution over time. Tracing the trajectory of comets can also reveal clues about the solar system's ancient environment and the processes that have shaped it.
comets
Comets
There are no comets on Neptune because Neptune is a planet and comets are, well, comets. They have nothing to do with each other.
comets crash into all planets!Planets don't have comets. Planets have moons. Comets orbit the sun
The appearance of comets has been noted throughout recorded history. Cavemen undoubtedly saw them, but had no way to tell us about it.
The most likely source of the water which composes the Earth's oceans is comets, which impacted the Earth in its earlier history.