A large mass of ice and dust in space with a tail is called a comet. As a comet approaches the sun, the heat causes the ice to vaporize and create a glowing tail that points away from the sun due to solar wind.
simple and easy a comet a comet has a solid center nucleus that contains rock particles trapped in frozen liqud this forms the tail: as it moves closer to the sun the "outer ice" turns to gas and the solid particles (pieces) turn to dust
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the rings around our planets are made out of icy dust particles and frozen gases
It sounds like you are describing a nebula, which is a cloud of gas and dust in outer space. Nebulae can be illuminated by nearby stars, and their colors and shapes can vary depending on the composition of the gas and dust within them.
Matter does.
Small space objects clump together from many different directions giving it a odd shape. once the object gets enough mass, the gravity starts forcing the object into a ball. For example space dust kept on connecting (when in orbit around the sun) until the mass was large enough to force the space dust ( which by then was basically rock) into a large uninhabitable ball which after pulling gasses in to form an atmosphere, turned into what we call now earth.
A galaxy.
nebula
Yes, dust is matter. Matter is anything that has mass and takes up space, and dust particles fit this definition. Dust is composed of tiny solid particles that can be made up of various materials such as skin cells, pollen, and soil.
Matter
Large mass (in astronomical terms) bend and distort the fabric of spacetime.
To a large extent, empty space. But there are also isolated stars and other objects, as well as dust and gas. It seems that the intergalactic gas in a galaxy cluster, though thinly spread, has about as much mass as all the galaxies!
simple and easy a comet a comet has a solid center nucleus that contains rock particles trapped in frozen liqud this forms the tail: as it moves closer to the sun the "outer ice" turns to gas and the solid particles (pieces) turn to dust
A large land mass is commonly called a continent.
nebula
Scientists have estimated that several TONS of dust and rocks fall to Earth each day. Some of it is in the form of meteors, which either burn up in the atmosphere (adding dust and vapor) or fall to the ground (adding solid mass). Some of the dust on your bookshelves is space dust.
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