http://coolcosmos.ipac.caltech.edu/ask/181-What-is-the-difference-between-an-asteroid-and-a-comet-

The main difference between asteroids and comets is their composition, as in, what they are made of. Asteroids are made up of metals and rocky material, while  ...

https://earthsky.org/space/whats-the-difference-between-comets-and-asteroids

Jun 26, 2014 ... Asteroids tend to be rockier or more metallic. Comets tend be icier. But some objects blur the distinction between asteroids and comets.

https://www.universetoday.com/33006/what-is-the-difference-between-asteroids-and-comets/

Nov 19, 2014 ... The biggest difference between comets and asteroids, however, is what they are made ... Here's a list of past missions to asteroids and comets.

https://www.scienceabc.com/nature/universe/asteroids-and-comets-size-composition-comparison-differences-and-similarities.html

Although they have different names and have always been categorized in a ... The primary difference between comets and asteroids lies in their respective ...

https://spaceplace.nasa.gov/review/posters/stardust/comets-vs-asteroids.pdf

mysteries of comets and asteroids—and our solar system itself. Join us on a ... Most reside in Asteroid Belt between orbits of Mars and .... They range from the Compare the sizes of asteroid Vesta (left) with dwarf ... What are asteroids made of? What do ... Scientists have put asteroids into three different categories. One.

http://www.planetsforkids.org/asteroids-and-comets.html

Anything that comes close to the earth from outer space is known as a near-earth object (NEO). These include asteroids and comets that may have been pushed ...

https://www.popsci.com/what-is-a-comet-asteroid

Oct 12, 2018 ... But what are asteroids and comets, really? ... The spacecraft is orbiting the asteroid, and it already sent three other machines down to the ...

https://www.mercurynews.com/2013/03/10/comet-meteor-asteroid-heres-how-to-tell-the-difference/

Mar 10, 2013 ... Meteoroid: A small rocky or metal object, usually between the size of a grain of sand or a boulder, that orbits the sun. It originates from a comet ...

https://www.quora.com/What-is-the-difference-between-asteroids-and-comets

What are the differences between comets, asteroids, and meteoroids? .... These fell into three major groups: metals, rock, and hydrogen ...

https://www.nbcnews.com/mach/science/what-s-difference-between-comet-asteroid-ncna925576

Oct 29, 2018 ... Comets and asteroids might seem like similar hunks of space debris, but they're ... So what are the differences between comets and asteroids? ... had already been visible from at least three times before — in 1531, 1607 and ...