NASA's deep space antennas trying to communicate with 'motionless' Vikram

After Indian Space Research Organization's (ISRO's) last effort to communicate with Vikram lander, that is lying motionless on the Lunar surface, NASA deep space antennas are also trying to send 'Hello' messages to it in order to establish a connection. The hope of reviving Vikram is fading away as after 14 days it will remain exposed to the Sun and there will be no hope to energize its panels.