Editing Pictor (section)

===Deep-sky objects===
[[File:Pictor A composite.jpg|thumb|Composite image in X-rays by [[Chandra X-ray Observatory]] (blue) and radiowaves by [[Australia Telescope Compact Array]] (red) showing two lobes and a [[Relativistic jet|jet of plasma]] emanating from [[Pictor A]]]]
[[NGC 1705]] is an irregular dwarf galaxy 17 million light-years from Earth. It is one of the most active [[star formation|star forming]] galaxies in the nearby universe, despite the fact that its rate of star formation peaked around 30 million years ago.{{sfn|Wilkins|Dunn|2006}} [[Pictor A]], around 485 million light-years away, is a double-lobed [[radio galaxy]]{{sfn|NED Pictor A}} and a powerful source of [[radio wave]]s in the Southern Celestial Hemisphere.{{sfn|Perley et al.|1997}} From a [[supermassive black hole]] at its centre, a [[relativistic jet]] shoots out to an X-ray hot spot 800,000 light years away.{{sfn|ChandraPR}} [[SPT-CL J0546-5345]] is a massive [[galaxy cluster]] located around 7 billion light-years away with a mass equivalent to approximately 800&nbsp;trillion suns.{{sfn|Ghosts of the Future}}

[[GRB 060729]] was a [[gamma-ray burst]] that was first observed on 29 July 2006. It is likely the signal of a [[Type Ib and Ic supernovae|type Ic supernova]]—the core collapse of a massive star.{{sfn|Cano et al.|2011}} It was also notable for its extraordinarily long X-ray [[gamma-ray burst#Afterglow|afterglow]], detectable 642 days (nearly two years) after the original event.{{sfn|Grupe et al.|2010}} The event was remote, with a [[redshift]] of 0.54.{{sfn|Cano et al.|2011}}