The ISON -- or at least part of it -- may have survived , experts say . Earlier observations indicated it disintegrated . The fate of the satellite remains uncertain . Others repeated an old joke about comets and cats . ` It was at its closest approach to Earth .
The ISON -- or at least part of it -- may have survived , experts say . Earlier observations indicated it disintegrated . The fate of the satellite remains uncertain . It was at its closest approach to Earth .