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Hubble provides spectacular view of ongoing comet break-up   Hubble Space Telescope is providing astronomers with extraordinary views of Comet 73P/Schwassmann-Wachmann 3. The fragile comet is rapidly disintegrating as it approaches the Sun. Hubble images have uncovered many more fragments than have been reported by ground-based observers. These observations provide an unprecedented opportunity to study the demise of a comet nucleus. The comet is currently a chain of over 33 separate fragments, named alphabetically, stretching across the sky by several times the angular diameter of the Moon. Hubble caught fragment B during three days shortly after large outbursts in activity (from top to bottom: 18 April, 19 April and 20 April). Hubble shows several dozen "mini-comets” trailing behind each main fragment, probably associated with the ejection of house-sized chunks of surface material.
Deep-freeze relics of the early Solar System, cometary nuclei are porous and fragile mixes of dust and ices that can break apart due to the thermal, gravitational, and dynamical stresses of approaching the Sun. Whether any of the many fragments survive the trip around the Sun remains to be seen in the weeks ahead.  The first image from a three-day observation with Hubble, taken on 18 April 2006, shows the break-up of Comet 73P/Schwassmann-Wachmann 3’s Fragment B.  The second image from a three-day observation with Hubble, taken on 19 April 2006, shows the breakup of Comet 73P/Schwassmann-Wachmann 3’s Fragment B. ![Comet 73P/Schwassmann-Wachmann 3 - Fragment G [18 April 2006]](../images/heic0605e_L.jpg) This image from a three-day observation with Hubble, taken on 18 April 2006, shows the breakup of Comet 73P/Schwassmann-Wachmann 3’s Fragment G.  This ground-based view of Comet 73P/Schwassmann-Wachmann 3 fragments B and G, R, and N, taken on April 8 2006, was made with a 10"/380mm Schmidt Camera. The image is 80 arcminutes wide. Release date: 28 April 2006 |