Note: Comets and meteors are incorrect. Mazzaroth is the correct answer, but some versions of the Bible, such as the NIV, conclude that Mazzaroth means constellation(s), it may, but it may also refer to a named constellation (some suggest Corona Borealis) or the entirety of the heavens.
Note: Job is a book of Hebrew poetry and often uses figurative or picture language. The Bear is also called the constellation Ursa Major (Great Bear in Latin). It is possible that the bear's “cubs” are inconsequential stars that "travel" the night sky with the Bear constellation.