AUTHOR=Sorriso-Valvo Luca, Chen Christopher H. K., RetinĂ² Alessandro, Verscharen Daniel TITLE=Editorial: New challenges in space plasma physics: Open questions and future mission concepts JOURNAL=Frontiers in Astronomy and Space Sciences VOLUME=9 YEAR=2023 URL=https://www.frontiersin.org/articles/10.3389/fspas.2022.1130728 DOI=10.3389/fspas.2022.1130728 ISSN=2296-987X