Anp F-15C fighter jet flies past a developing pyrocumulus cloud above the Oregon Gulch fire, part of the Beaver Complex fire. Pyrocumulus clouds – sometimes called 'fire clouds' – are similar to cumulus clouds, but the heat that forces the air to rise comes from fire instead of sun-warmed ground.Nasa Earth Obersvatory / James Haseltine and the Oregon Air National Guard 173rd Fighter WingComet 67P/Churyumov-Gerasimenko is seen in a photo taken by the Rosetta spacecraft. The European Space Agency's Rosetta spacecraft became the first to rendezvous with a comet and will follow it on the journey around the sun.ESAPotentially toxic sludge spills from a tailing pond breach at Imperial Metals' gold and copper mine at Mount Polley in British Columbia, Canada. The breach of the large pond holding waste matter from the mine spilled some 10 million cubic metres (2.6 billion gallons) of water and 4.5 million cubic metres of silt into Polley LakeReutersAnne Saulnier watches as her husband Brian buckles up an anthropomorphic robot named hitchBOT after picking it up on Highway 102 outside of Halifax, Nova Scotia. The hitchhiking robot is part of a social experiment to see if strangers will help hitchBOT complete its 6,000 kilometre journey from Halifax to Victoria, British Columbia.ReutersMonks dust the 15-metre-high Great Buddha at the Todaiji Temple in Nara, JapanGettyArtist Sarah Pratt sculpts a butter statue of Kevin Costner as Ray Kinsella in the film Field of Dreams, at the Iowa State Fair in Des MoinesGettyAn Afghan woman buys silk yarn for weaving from a shop in Herat, once a stop along the Silk Road trade routeAFPTurkey's Prime Minister Tayyip Erdogan wears a traditional outfit as he meets representatives of nomadic Turkish groups in AnkaraReutersLondon Mayor Boris Johnson leaves after giving a speech in London. He said he would try to run for parliament in 2015.ReutersSouth African paralympic champion Oscar Pistorius arrives for the closing arguments in his murder trial at the high court in PretoriaAFPSoum Rithy, who lost his father and three siblings during the Khmer Rouge regime, hugs another survivor after the verdict was delivered in the trial of former head of state Khieu Samphan and former Khmer Rouge leader ''Brother Number Two' Nuon Chea at the Extraordinary Chambers in the Courts of CambodiaReutersNational Legislative Assembly members gather before convening their first session at the parliament house in BangkokReutersA Ukrainian serviceman checks his weapon as a fellow soldier rests on a bed near the eastern Ukrainian town of Debaltseve, Donetsk RegionReutersPalestinians sit amid the ruins of destroyed homes in the Shejaia neighbourhood of Gaza CityReutersA Chinese soldier takes a nap on a collapsed wall among debris during a break in rescue operations, after an earthquake hit Longtoushan in Yunnan provinceReutersA worker uses a laptop inside his dormitory near a residential construction site in Hefei, Anhui province, ChinaReuters
