COSPAR will hold its fifth Symposium in Singapore 15 – 19 November 2021. COSPAR will hold its fifth Symposium in Singapore, 15 – 19 November 2021. The general topic will be space science with small satellites. The scientific program is now available and abstract submission open at https://www.cospar-assembly.org/symposia. The Local Organizing Committee (LOC) website, for information on registration, accommodation and other matters, is open at http://www.cosparsg.org.