The ESA/NASA SOHO satellite watched as Comet ISON made its closest approach to the Sun on 28 November, at a distance of around 1.2 million kilometres from the Sun's visible surface. Did it survive? Early reports suggested that only the comet's tail continued to follow along ISON's orbit. Further observations will reveal if a chunk of the comet's nucleus survived.
See the latest images: http://soho.esac.esa.int/hotshots/index.html/