- Meteor Terminology poster (amsmeteors.org)
In a constant effort to create excitement about Science and to increase the level of the general population’s knowledge about Meteor Astronomy, the AMS has decided to create a set of educational posters. All AMS posters are available to print for free.
- Piscis Austrinus (Wikipedia)
Piscis Austrinus is a constellation in the southern celestial hemisphere. The name is Latin for “the southern fish”, in contrast with the larger constellation Pisces, which represents a pair of fish. Before the 20th century, it was also known as Piscis Notius. Piscis Austrinus was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and it remains one of the 88 modern constellations. The stars of the modern constellation Grus once formed the “tail” of Piscis Austrinus. In 1597 (or 1598), Petrus Plancius carved out a separate constellation and named it after the crane.
- Asteroid (Wikipedia)
An asteroid is a minor planet—an object that is neither a true planet nor an identified comet— that orbits within the inner Solar System. They are rocky, metallic, or icy bodies with no atmosphere, classified as C-type (carbonaceous), M-type (metallic), or S-type (silicaceous). The size and shape of asteroids vary significantly, ranging from small rubble piles under a kilometer across and larger than meteoroids, to Ceres, a dwarf planet almost 1000 km in diameter. A body is classified as a comet, not an asteroid, if it shows a coma (tail) when warmed by solar radiation, although recent observations suggest a continuum between these types of bodies.