Brown dwarfs celebrate their 25th birthday: what have we
learned and what is missing?
A Cool Stars 21 Splinter Session. 22 - 26 June 2020, Toulouse, France

Important dates

*****Cool Stars 21 has been postponed to Spring/early Summer2021 *****

Message from the LOC & SOC: We regret to announce that the Cool Stars, Stellar Systems, and the Sun 21st Conference, originally planned to be held on June 22-26, 2020, in Toulouse, France, has to be postponed due to the current Covid-19 pandemic. The decision was discussed within the SOC and LOC, and agreed by all members of the organizing committees. We plan to reschedule CS21 in Spring/early Summer2021. Please refer to the CS21 website for the latest news:


  • 28 January  2020 - Announcement of accepted Splinter sessions
  • 17 April 2020 - Deadline for abstract submission to our Splinter session
  • 14 June 2020 - End of registration deadline to CS21
  • 22 June 2020 - Start of Cool Stars 21