reporter: ronald reagan talked about arms control and summoned vigorous praise for the pontiff. in your travels you ve inspired millions, people of all races and all faiths. reporter: george w. bush did the same. his holiness, pope john paul ii, has championed the cause of the poor. reporter: only to be criticized for looking too casual when he met john paul s successor, pope benedict. some meetings have been relatively short, some surprisingly long. but all are unique such as when barack obama noted pope francis is not merely a great man of peace but also a funny one. i can t share all his jokes. they were all clean. [ laughter ] reporter: so it is that these meetings are always a peculiar blend of piety and politics between two of the most influential souls on the planet. with both knowing the whole world is watching.
the start of a 4 billion milejourney. lift off, atlas v takes flight. the atlas v rocket is carrying a craft called lucy, that aims to go into orbit around jupiter and study a group of asteroids called trojans, some of which are the size of a city. so what are the trojan asteroids? there asteroids which orbit withjupiter around the sun that ultimately hold the clues to the formation of our solar system. lucy s giant solar panels would only generate enough electricity to power a few light bulbs on earth but around jupiter, it s enough to reach the trojan asteroids and ask questions like what they made of and where do come from? by going to visit a large number, eight asteroids in total, over the mission lifetime, we ll really better understand all about the asteroids. so if you only see one, maybe you got a bit of a funny one, but by seeing eight, you get to really understand what s going on in this population.
atlas v takes flight. the atlas v rocket is carrying a craft called lucy, that aims to go into orbit around jupiter and study a group of asteroids called trojans, some of which are the size of a city. so what are the trojan asteroids? they re asteroids which orbit withjupiter around the sun that ultimately hold the clues to the formation of our solar system. lucy s giant solar panels would only generate enough electricity to power a few light bulbs on earth, but around jupiter, it s enough to reach the trojan asteroids and ask questions like what they made of and where do come from? by going to visit a large number, eight asteroids in total, over the mission lifetime, we ll really better understand all about the asteroids. so if you only see one, maybe you got a bit of a funny one. but by seeing eight, you get to really understand what s going on in this population. scientists want lucy
all about the asteroids. so if you only see one, maybe you got a bit of a funny one, but by seeing eight, you get to really understand what s going on in this population. scientists want lucy to test their theory that the early solar system was juggled around by gravity with some objects being thrown in and others out, just like billiard balls. but they ll need patience. lucy s expected to be operating around asteroids for the next 12 years. duncan kennedy, bbc news. a reminder of our top story: the bbc has learned that a man detained on suspicion of killing the british mp, david amess, had previously attended a government scheme to prevent radicalisation. the suspect named as ali harbi ali is thought not to have been put on a watchlist of subjects, of interest to the security services.
and ask questions like what they made of and where do come from? by going to visit a large number, eight asteroids in total over the mission lifetime, we ll really better understand all about the asteroids. so if you only see one, maybe you got a bit of a funny one. but by seeing eight, you get to really understand what s going on in this population. scientists want lucy to test their theory that the early solar system was juggled around by gravity, with some objects being thrown in and others out, just like billiard balls. but they ll need patience. lucy is expected to be operating around asteroids for the next 12 years. duncan kennedy, bbc news. an unusual development in the world of turtles now, because a tiny terrapin with two heads has been born at a wildlife rescue centre in boston. earlier i spoke to the man looking after it, dr greg mertz from the new england wildlife centre.