The American Astronomical Society (AAS) is an international
non-governmental organization with a mission to enhance and share
humanity’s scientific understanding of the universe as a diverse and
inclusive astronomical community.
To further support the Society’s mission and provide immediate access to
important research, the AAS will be transitioning its entire journals
portfolio to fully open access (OA) as of 1 January 2022. As of that
date all content — past, present, and future — will be immediately and
openly accessible: anyone can read, download, and share anything in the
portfolio and there will be no subscription fees or paywalls.
The AAS announced this transition publicly on 1 September 2021. The
transition takes effect 1 January 2022.