To look “into” a #BlackHole—from which no photon or wave or ray ever returns—requires considerable #creativity. The interior of a black hole can only be deduced from changes exterior to it. Active #BlackHoles are encircled by intense brightness & billion-degree heat, given off by matter falling toward them—think of the fire of an incoming asteroid—while the black hole itself is unthinkably cold, a tiny fraction of a degree above absolute zero.