Nasas cassini gets closer than ever before to the planet. Coming up in the sport on bbc news, in age, theres14 years between them, but today, Anthony Joshua and Wladimir Klitschko came face to face ahead of their world title fight. Good evening and welcome to the bbc news at six. Another terror alert just yards away from last months deadly attack in westminster. Armed police have arrested a man under the Terrorism Act and seized knives he was carrying. Its now clear that the suspect who was captured on whitehall was under surveillance by Scotland Yards anti terror squad. Asjune kelly reports, theres been a High Profile Police presence in the area since Khaled Massood killed five people, including pc keith palmer, in march. Under arrest in the shadow of Government Buildings in whitehall. The man was detained by armed officers Near Parliament square. This was not a random stop search and arrest. It is understand the man was targeted by police as part of an operation by Scotland Yard coun