Comet lander starts drilling; batteries a worry

Isis, Under Blanket
ISIS
Image by dreamcicle19772006, ON & OFF
I think Isis was about 4 months old at the time, when I took this picture

The good news: The spacecraft that landed on a comet has begun drilling beneath the surface to see what secrets the celestial body can reveal.
WTTG – U.S. & World – headline