Each year since 2009, at the International Astronautical Congress, the Nandasiri Jasentuliyana Keynote Lecture on Space Law is presented by a leading expert on space law.

The 2017 Nandasiri Jasentuliyana Keynote Lecture on Space Law was presented at the IISL colloquium during the IAC in Adelaide, Australia. It was given by Peter Jankowitsch and is entitled The Outer Space Treaty — Its First Fifty Years.

The keynote lecture is published in the IISL Proceedings 2017 and a summary is available in the 2017 IISL Colloquium report. The text of the keynote lecture can be accessed below.

The Outer Space Treaty — Its First Fifty Years

By Peter Jankowitsch, President, International Academy of Astronautics (IAA), former Austrian Minister for Foreign Affairs, and former Chairman, UNCOPUOS