Researchers now report that they can use this gamma ray radiation to infer
the number of small asteroids in different groups of small solar system bodies.
Not exact matches
The task will be complicated by the sheer
number of such objects and by their diminished brightness —
smaller asteroids and comets reflect less light and so more easily escape detection.
By 1846, astronomers had found two more planets, Uranus and Neptune, as well as a
number of smaller bodies called
asteroids.
A strike by a large
asteroid or
small comet nucleus (1 kilometer or greater) is but one
of several kinds
of independent high energy events that could destroy humanity and probably a significant
number of other species as well.