Whenever the subject of mosquito control comes up, someone gives a fervent argument for installing purple martin houses and bat houses. Stores that cater to bird enthusiasts often tout the purple martin houses as the best solution for keeping your yard mosquito free.
A short period comet is conventionally defined as a comet having an orbital period of less than 200 years. What is the maximum possible aphelion distance for a short period comet with a perihelion of 0.5 AU? Where does this place the comet relative to the outer planets? (3)
The anomalistic period happens between two entries of an object at its closest point to the attracting body. This is like the planets in relation to the Sun in the Solar System. In space travel terms, an orbital period is the time it takes for a satellite to complete an orbit about its primary.