In 1986, the Giotto space probe was launched to study these phenomena, such as the Grigg-Skjellerup one.
In 1986, the Giotto space probe was launched to study these phenomena, such as the Grigg-Skjellerup one. NASA's Stardust probe found the amino acid glycine in one of these named Wild 2. These phenomena's atmospheres give their name to a parabolic aberration in which off-axis point sources are distorted. When earth passes by one named Swift-Tuttle, the Perseid meteor shower occurs. One of these named (*) Shoemaker-Levy 9 crashed into Jupiter in 1994. Long period ones may originate from the Oort Cloud. They are characterized by a core called the nucleus and a thin atmosphere referred to as a coma. For 10 points, name these "dirty snowballs" of the Solar System, one of which is named for Edmund Halley.
In 1986, the Giotto space probe was launched to study these phenomena, such as the Grigg-Skjellerup one.
comets