Using the Hubble Space Telescope (HST), astronomers have observed a globular cluster known as NGC 1754 as part of a ...

You’ll find the first, NGC 2266, 1.8° north of magnitude 3.3 Propus (Eta [η] Geminorum) in a rich Milky Way star field. This cluster glows at magnitude 9.5 and measures only 5′ across.

A primer is a book or instructions providing help. A prime is a number divisible only by 1 and itself. The NGC contains 7,840 objects, and there are 990 prime numbers within that range.

Figure 1: Optical HST image of the compact lenticular galaxy NGC 1277. Figure 3: The correlation between black-hole mass and near-infrared bulge luminosity, . A stellar population analysis of ...

Previous observations of NGC 6355 have found that it has a relatively high mass of about 101,000 solar masses, reddening at a level of 0.82 and its metallicity is approximately -1.46. The absolute ...