What is "adrastea"

"nemesis," daughter of Zeus, distributor of rewards and punishments, from Greek Adrasteia, literally "she from whom there is no escape," from adrastos "not running away," from privative prefix a- + stem of drasmos "a running away," related to dromos "course" (see dromedary).

Adrastea ( ; ), also known as , is the second by distance, and the smallest of the four inner moons of Jupiter. It was discovered in photographs taken by Voyager 2 in 1979, making it the first natural satellite to be discovered from images taken by an interplanetary spacecraft, rather than through a telescope. It was officially named after the mythological Adrasteia, foster mother of the Greek god Zeus—the equivalent of the Roman god Jupiter.

Adrastea is one of the few moons in the Solar System known to orbit its planet in less than the length of that planet's day. It orbits at the edge of Jupiter's Main Ring and is thought to be the main contributor of material to the Rings of Jupiter. Despite observations made in the 1990s by the Galileo spacecraft, very little is known about the moon's physical characteristics other than its size and the fact that it is tidally locked to Jupiter.

Adrastea, Adrasteia, Adrestea or Adrestia may refer to:

• Adrasteia, a figure in Greek mythology
• Adrasteia (goddess), a mountain goddess worshipped in Phrygia
• Adrastea (moon), the second of Jupiter's known moons
• Adrastea was an informal name borne by Jupiter XII (now Ananke (moon)) from 1955 to 1975
• Adrestia, an offspring of Ares and Aphrodite
• Adrastea: Events and Characters of the 18th Century, a literary work by Johann Gottfried Herder
• 239 Adrastea, an asteroid
• Adrasteia (Mysia), a region in northwest Asia Minor