The meeting gathers scientists from the working group "Neutron stars and supernovae" from GdR Gravitational waves and the working group "Nuclear astrophysics" from GdR RESANET. Confirmed speakers are Matteo Barsuglia (APC), Nicolas Chamel (ULB) and Francesco Nitti (APC). Due to the current situation, the meeting will be held entirely via visioconference. The three speakers will give webinars with time for discussion. The links for the connection will be sent by e-mail to all registered participants and to the two GdR mailing lists.