Thor has his day (Thursday) and also possesses his helmet in the sky. NGC 2359, also known as Thor's helmet, is a hat-shaped cosmic cloud with wing-like structures. This nebula boasts a massive ...
Symbiotic star: NASA's Hubble Space Telescope has captured Mira HM Sge, a symbiotic star located 3,400 light-years away in the constellation Sagitta. The star system consists of a red giant and a ...