Aurora vs. Nebula: What's the Difference?

The goddess of the dawn.

A diffuse cloud of interstellar dust or gas or both, visible as luminous patches or areas of darkness depending on the way the mass absorbs or reflects incident light or emits its own light.

A luminous atmospheric phenomenon appearing as streamers or bands of light sometimes visible in the night sky in northern or southern regions of the earth. It is thought to be caused by charged particles from the sun entering the earth's magnetic field and stimulating molecules in the atmosphere.

A galaxy. No longer in technical use.

The dawn.

A cloudy spot on the cornea.

An atmospheric phenomenon created by charged particles from the sun striking the upper atmosphere, creating coloured lights in the sky. It is usually named australis or borealis based on whether it is in the Southern or Northern Hemisphere respectively.

A liquid preparation for use in a nebulizer.

The rising light of the morning; the dawn of day; the redness of the sky just before the sun rises.

(astronomy) A cloud in outer space consisting of gas or dust (e.g. a cloud formed after a star explodes).

The rise, dawn, or beginning.

A white spot or slight opacity of the cornea.

The Roman personification of the dawn of day; the goddess of the morning. The poets represented her a rising out of the ocean, in a chariot, with rosy fingers dropping gentle dew.

A cloudy appearance in the urine.

A species of crowfoot.

A faint, cloudlike, self-luminous mass of matter situated beyond the solar system among the stars. The term was originally applied to any diffuse luminous region. Now, technically, it is applied to interstellar clouds of dust and gases (diffuse nebula). However distant galaxies and very distant star clusters often appear like them in the telescope, such as the spiral nebula in Andromeda, known now to be a distant galaxy.

The aurora borealis or aurora australis (northern or southern lights).

A white spot or a slight opacity of the cornea.

The first light of day;

A medicinal liquid preparation intended for use in an atomizer

An atmospheric phenomenon consisting of bands of light caused by charged solar particles following the earth's magnetic lines of force

Cloudiness of the urine

(Roman mythology) goddess of the dawn; counterpart of Greek Eos

An immense cloud of gas (mainly hydrogen) and dust in interstellar space

(pathology) a faint cloudy spot on the cornea