Free Astronomy Magazine November-December 2023

34 NOVEMBER-DECEMBER 2023 ASTRO PUBLISHING mass only 8% of the present-day Sun. (It will eventually grow into a star like the Sun.) Infrared imaging is power- ful in studying newborn stars and their outflows, be- cause such stars are invariably still embedded within the gas from the molecular cloud in which they formed. The infrared emission of the star’s outflows penetrates the obscuring gas and dust, making a Herbig-Haro object like HH 211 ideal for observation with Webb’s sensitive infrared instruments. Webb snaps supersonic outflow of young star by NASA/ESA/CSA Bethany Downer Hannah Braun H erbig-Haro (HH) objects are lumi- nous regions sur- rounding newborn stars, formed when stellar winds or jets of gas spew- ing from these newborn stars form shock waves collid- ing with nearby gas and dust at high speeds. This image of HH 211 from NASA’s James Webb Space Tele- scope reveals an outflow from a Class 0 proto- star, an infantile analog of our Sun when it was no more than a few tens of thousands of years old and with a