Free Astronomy Magazine March-April 2022

THE FREE MULTIMEDIA MAGAZINE THAT KEEPS YOU UPDATED ON WHAT IS HAPPENING IN SPACE Bi-monthly magazine of scientific and technical information ✶ March-Apri l 2022 ✶ ✶ Proxima b, a truly elusive planet What happens when two stars share an atmosphere? The sundial, from antiquity to computer drawing The Webb Space Telescope is ready to amaze us • Black hole found hiding in star cluster outside our galaxy • The first supernova explosion of a Wolf-Rayet star • The VLT images planet around most massive star pair to date • Mini-jet discovered near Sagittarius A* • Astronomers discover an ultra-light and super-fast sub-Earth