QUESTION:
Is there anything on the Hubble that can make it explode?

ANSWER from Bob Chapman on June 11, 1996:
Yes.  The Hubble has rechargeable nickel-hydrogen batteries.  As the
Hubble orbits around the earth, it is sometimes in daylight and sometimes
in the dark.  The batteries supply electricity to the Hubble when the
spacecraft is in the dark, night-time portion of its orbit.  During the
day-time portion of the orbit arrays of solar cells supply electricity to
operate the Hubble and to recharge the batteries.

If the Hubble's batteries were to receive too much charge, they could
overheat and explode.  This is very very unlikely, because the engineers
who designed the Hubble built in safeguards which detect overheating and
react to slow or stop the charging.