- Messier 52 (Wikipedia)
Messier 52 or M52, also known as NGC 7654 or the Scorpion Cluster, is an open cluster of stars in the highly northern constellation of Cassiopeia. It was discovered by Charles Messier in 1774. It can be seen from Earth under a good night sky with binoculars. The brightness of the cluster is influenced by extinction, which is stronger in the southern half. Its metallicity is somewhat below that of the Sun, and is estimated to be [Fe/H] = −0.05 ± 0.01.
- Rostov Oblast (Wikipedia)
Rostov Oblast (Russian: Росто́вская о́бласть, romanized: Rostovskaya oblast’, IPA: [rɐˈstofskəjə ˈobləsʲtʲ]) is a federal subject of Russia (an oblast), located in the Southern Federal District. The oblast has an area of 100,967 square kilometers (38,984 sq mi) and a population of 4,200,729 (2021 Census), making it the sixth most populous federal subject in Russia. Its administrative center is the city of Rostov-on-Don, which also became the administrative center of the Southern Federal District in 2002.
