🇺🇸 The grapple of @NASAInSight is now securely closed on the HP³ heat flow probe hook. The robotic arm is ready to perform its third and final deployment, and then it will be able to take a well deserved rest ! #SEISsurMars pic.twitter.com/mA7tbL2GXs

— SEIS (@InSight_IPGP) February 10, 2019