Free Astronomy Magazine March-April 2025

Editor in chief Michele Ferrara Scientific advisor Prof. Enrico Maria Corsini Publisher Astro Publishing di Ferrara M. Via Bonomelli, 106 25049 Iseo - BS - ITALY email info@astropublishing.com Internet Service Provider Aruba S.p.A. Via San Clemente, 53 24036 Ponte San Pietro - BG - ITALY Copyright All material in this magazine is, unless otherwise stated, property of Astro Publishing di Ferrara M. or included with permission of its author. Reproduc- tion or retransmission of the materials, in whole or in part, in any manner, without the prior written consent of the copyright holder, is a violation of copyright law. A single copy of the ma- terials available through this course may be made, solely for personal, non- commercial use. Users may not distrib- ute such copies to others, whether or not in electronic form, whether or not for a charge or other consideration, without prior written consent of the copyright holder of the materials. The publisher makes available itself with having rights for possible not character- ized iconographic sources. Advertising - Administration Astro Publishing di Ferrara M. Via Bonomelli, 106 25049 Iseo - BS - ITALY email admin@astropublishing.com ASTROFILO l’ March-April 2025 BI-MONTHLY MAGAZINE OF SCIENTIFIC AND TECHNICAL INFORMATION FREELY AVAILABLE THROUGH THE INTERNET English edition of the magazine World’s darkest and clearest skies at risk DECam spies the outskirts of Messier 83 Extreme supersonic winds measured on WASP-127b A ‘Milky Way’ in the young Universe Exocomet belts are changing our understanding of planetary systems The largest photomosaic of the Andromeda galaxy Planet-forming disks lived longer in early Universe A second super star cluster in the LMC Unprecedented features at the brink of an active black hole First ever binary star found near Sagittarius A* Webb reveals intricate Cassiopeia A light echoes 4 10 14 18 22 26 32 36 40 44 48