We are pleased to announce the 20th Annual International Astrophysics Conference - From the Depths of the Solar Corona to the Darkness of Interstellar Space: A 20 Year Perspective to be held at the La Posada Resort & Spa hotel in Santa Fe, New Mexico, from October 31 to November 4.  (Welcome Reception and Evening Registration begins Sunday, October 30).

Anticipating that the COVID pandemic will be behind us by October 2022 (or at least endemic), our thoughts turn at last to the 20th Annual International Astrophysics Conference (AIAC) having been postponed for 2 years.

The 20th AIAC is intended to be two fold - retrospective, celebrating the solar, space, and astrophysical accomplishments of the past 20 years as expressed in the 19 prior AIAC conferences, and a perspective, i.e., examining some of the pressing questions that taxed our community over the past 20 years from the perspective of what we think we know and understand. Accordingly, the theme of the meeting will be From the Depths of the Solar Corona to the Darkness of Interstellar Space: A 20 Year Perspective. We will follow the usual format of 25-minute presentations punctuated by selected 40-minute invited talks that will develop both the retrospective and perspective themes in greater detail. Since the 19 previous meetings addressed the broad themes of the interaction of the outer heliosphere and the local interstellar medium, shock waves and nonlinear processes, energetic particles, particle acceleration and transport, the heating and physics of the solar corona and solar wind, turbulence processes, and much more, these will all be themes in the 20th iteration of the AIAC. A characteristic theme of previous meetings was the universality of many of the physical processes that informed the conference, and this will be a central element of the 20th celebration.

In the spirit of keeping all attendees as safe as possible, we will be limiting the number of attendees and implementing safety protocols as recommended by the CDC and World Health Organization.  In that vein, all meeting participants will be required to adhere to the following mandates:

• Provide proof of being FULLY vaccinated against COVID-19 as required by the CDC.
• N95 or KN95 masks only must be worn at all times during all conference functions.
• Provide proof of a negative COVID test taken within 24 hours of the meeting.
• Practice social distancing throughout the entire conference timeframe.

We will update any changes to these recommendations as they are provided to us.