What did the IAU establish in 1928?
a. The IAU classified Pluto as a dwarf planet.
b. The IAU published official names of all constellations.
c. The IAU recorded 88 constellations with defined boundaries.
d. The IAU recognized additional orbiting bodies in the Kuiper Belt.
e. The IAU recorded all the mythologies associated with 88 constellations.
Question 2
What is an asterism?
a. A legend or folklore association to a grouping of stars
b. Less formally defined group of stars outside the official 88 constellations
c. The council of astronomers who defined the 88 constellations
d. The northern pivot point of the celestial sphere
e. Constellations close enough to a celestial pole that they do not appear to rise from the east and set in the west
A very high-resolution texture of the planet Mars
Uranus's aurorae against its equatorial rings, imaged by the Hubble telescope. Unlike the auror
Sunlight on Mars is dimmer than on Earth. This photo of a Martian sunset was imaged by Mars Pathfind
Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones
Microlensing Reveals an Extrasolar Planet
A Changing Planet — 1e