APOD: 2022 February 10 - T Tauri and Hind's Variable Nebula

Good afternoon, Rallypoint, and welcome to the February 10th Astronomy Picture of the Day (APOD): "T Tauri and Hind's Variable Nebula." We travel to the constellation Taurus today for a look at Hind's Variable Nebula. Also known as NGC 1555, it lies 650 light years away and was discovered by John Russell Hind in 1852. The nebula is also a Herbig-Haro object, formed when narrow jets of partially ionised gas ejected by stars collide with nearby clouds of gas and dust at several hundred kilometres per second. Herbig–Haro objects were recognized as a distinct type of emission nebula in the 1940s. The first astronomers to study them in detail were George Herbig and Guillermo Haro, after whom they have been named.