Pleiades

WHAT’S IN THE SKY: DECEMBER

M45: Commonly called the Pleiades or Seven Sisters, M45 is known as an open star cluster. It contains over a thousand stars that are loosely bound by gravity, but it is visually dominated by a handful of its brightest members.

IC 342: Caldwell 5, also known as IC 342, is a spiral galaxy located approximately 11 million light-years from Earth. Despite its 8.4 magnitude, Caldwell 5 is very difficult to find in the sky. The galaxy appears near the equator of the Milky Way’s pearly disk, which is crowded with thick cosmic gas, dark dust, and glowing stars that all obscure our view. Therefore, in order to distinguish the intricacies of Caldwell 5 through a telescope, astronomers must peer through light-years of space chock-full of visual hindrances. This has earned Caldwell 5 the nickname of the Hidden Galaxy.

Caldwell 67: This beautiful spiral galaxy is best viewed in early summer from the Southern Hemisphere or early winter from the Northern Hemisphere. In the constellation Fornax, it is magnitude 9.2 and it is 45 million light years away.

M77: This majestic spiral galaxy has an intensely active core. It’s in the constellation Cetus and is apparent magnitude 9.6.

C24: Caldwell 24 is one of the closest giant elliptical galaxies to Earth and was discovered by William Herschel in 1786. It’s in the constellation Perseus and is apparent magnitude 11.9. It is 230 million light years away. It’s also known as NGC 1275.