all together again will roughly double the performance of the detector. the new upgrades will come online in five years' time. a development that scientists say will enable them to answer some of the universe's biggest mysteries. let's find out more. how are we going to benefit from all this investment because it is just science talk? science is a really vital part in modern society and i will start by saying that but also this is an incredibly ambitious object. but it does is, it pushes technology to the limit as well as trying to answer these bigger scientific questions. if you are able to make ultra smooth mirrors, able to make ultra smooth mirrors, able to make ultra smooth mirrors,

able to constrain things in space, then you do get unexpected spin offs from this and i was thinking about this earlier on. one example which we are very familiar with its 100 yea rs we are very familiar with its 100 years ago, a uk led team helped verify the theory of relativity. if that had not been done, we would not have gps, it would not be possible for satnav to work. you have to be patient. it's also incredibly inspiring, it brings people into science in a big way. back in 2015, they were hoping when you discoveries and they said this was going to open a new science. if you could just explain to us what this new science is? it is a new way of detecting the universe so up to now we've had optical astronomy, looking at the universe through your eyes, telescope and radio sensors and so

on, we detected cosmic rays but what this is about is a new way of doing it, looking at massive systems that literally distort the universe on a huge scale so gives us a handle on things we otherwise wouldn't have. thank you so much for that explanation. now on bbc news it's time for newswatch. hello and welcome to the programme. attacked while covering a donald trump rally, the bbc reporter there tells us what happened. hours of celebrities on the red carpet, is it time bbc news stopped going back crazy? on monday president trump travelled to el paso in texas, speaking to a rally held to campaign for the will

with mexico. in the media area was bbc washington correspond and carry it with donahue he reported the following day on what happened during the speech. journalists are regularly shouted at and abused by this time, one member of the crowd took matters into his hands. i have reached the lowest level in the history of our town. he pushes the camera violently from behind into my cameraman. then, as he is restrained, he continues to yell abuse the media. fortunately, my cameraman was not hurt and the man was taken away. later, the bbc wrote to the white house, asking them to review security arrangements for the media at rallies such as this in the white house condemned violence against journalists. they asked supporters

to behave in a peaceful and respectful manner. to tell us more about what happened and about the challenges facing journalists in america at the moment, garyjoins us 110w america at the moment, garyjoins us now from washington. we cannot tell from the footage what exactly happened but it was described as a violent, you were there, can you describe what happened ? violent, you were there, can you describe what happened? what happened was that there were three of us, myself, my producer and my cameraman and we were on the media riser, the platform built for the cameras to go on in front of the stage where the president was speaking. one member of the public managed to get onto the back of the riser, there was no security there as far as we could see, and they started to run along the level of the platform where we there and they pushed my cameraman was my camera into his body. then they pushed him and they came around the other side and they came around the other side and pushed him again. the guy

shouted, usa! and he shouted a four letter word followed by the word, media. he did that twice before he was restrained by another person who was restrained by another person who was on the riser and then he was taken to the front and security took him away. what would you said the atmosphere was like in the venue before the attack? i've done quite a lot of these rallies and it was pretty pumped. they usually are. they play a lot of loud music, a ci’oss they play a lot of loud music, a cross between a rock concert and a sporting event, if you like. they have speakers on beforehand so donald junior was on before the president and before that was ted cruz and another senator from texas. all of them did a little turn on how to fa ke all of them did a little turn on how to fake news was here and how the media was unfairly treating america. no one used the term, enemy of the people, but we have heard that before of course from the president. when that happens, there's a lot of

pointing from people, especially donald trump who will point at the media and say, look at those dumb quys media and say, look at those dumb guys over media and say, look at those dumb guys over there. that is pretty standard and i had that through the election campaign as well pretty regularly. it is pretty pumped. the bbc has formally complained about the incident involving you and your crew, gary, has the relationship with the white house changed this week, would you say? no, it is worth saying, just for the record, that my cameraman is fine. he was a bit shaken up by it but he is a big, tough guy and he is a professional and he carried on filming. our collea g u es and he carried on filming. our colleagues in the american press get a lot of this, they get a lot of, people have been spot on. regular chanting at these rallies is cnn socks, and they get a lot of heat

from the crowd. it is the first time i have seen anyone physically be able to get in amongst us on these platforms which are crowded places, full of lighting stands and tripods and cables all over the floor, boxes oliver the floor, you cannot move. in many ways, you are a little prisoner there. it is the first time i have ever seen anyone get amongst us i have ever seen anyone get amongst us like that and that is why i think the bbc is now certainly looking at the bbc is now certainly looking at the question of whether or not we need to take security with us when you go to these rallies in the election campaign. it is an amazing thought, isn't it? we take for granted that we have to have security in awesome is that at a political rally in the united states of america? there is now on the cards as well. as you have made clear, the president does not like a lot of the mainstream news media, he talks about it all the time and the busy correspondence, which is eight

is now having a detrimental effect on the ability to do yourjob?” think freedom of speech is incredibly important and that includes criticising the press. but we don't have to face and shouldn't have to face is people coming in and starting laying their hands on you, pushing around, shoving you. 99.99% of people here the rhetoric of mainstream media, they may complain and shout and swear, that is fine. they do all that but the risk is that the rhetoric and what it does to that 0.01% of people, what is a trigger in them? is there a chance that your rhetoric and the kind of language you use said something of very small number of people and gives them the feeling that they have license to do something like that stop that is the risk. the context ready matters here.

tuesdays news bulletins included an emotional report aboutjulie o'connor who died last week of cervical cancer after she had been given the all clear by a bristol hospital six times. it featured this footage of her which some viewers mightfind it footage of her which some viewers might find it distressing. until the end, julie was keen to tell her story. here she is speaking to herfamily in the hospicejust three days before she died. what is the prognosis now? as mentioned there, the questions we re as mentioned there, the questions were posed and the camera held by a family member, not a journalist, but some viewers either miss that, assuming it was a bbc reporter, or felt the item showed a lack of sensitivity in any case. we put those pointed to bbc news and

they you may have noticed it is a busy news time but with so much going on in the world, the choice of lead story on bbc one's news bulletins can still come as something as a

surprise and disappointment to some viewers. charlie webber was one of them this week and recorded this video to explain why. on sunday at 10pm, i tuned in to bbc news, curious as to developments in the likes of dennis miller, brexit and trump land. the headlines: living up to its name, the favourite wins several awards after is. the bbc news decided to lead with who had one bafta award. this astonished me. this is not actual news. i learned who had won what in the world of dress up and make believe. one of the nominees was bound to win in each category, hardly breaking news. we will bring you up—to—date. hardly breaking news. we will bring you up-to-date. the oscars are on at the end of february and here is a surprise, some of the attendees will actually when an

oscar. newsflash, just as not news. finally, it was announced this week that the bbc is calling time on this week, the 30 night political show which will not return after the current series finishes in july, bringing an end to its quirky mix of guests ranging from mps to the cheeky girls and even andrew neil's dog, molly. the introductions to the programme has been a favourite of debbie. here's an example of one of those openings, addressed to so—called islamic state following 2015 attacks in paris. after that, different example of one its endings. whatever atrocities you are capable of committing, you will lose. in 1,000 years' time, paris, that curious city of lights, will still be shining bright, as will every

other city like it. it will be as dust, along with the ragbag of fascists, nazis that have previously dared to challenge democracy. and failed. mighty night, don't let the performance hanson substances bite. that was in response to news that the dance group, underworld, would provide music for the opening of the 2012 limits. one of those regretting the decision to end the programme. thank you for all your comments this

week. if you want to share your opinions on bbc news and current affairs, or even appear on the programme, you can call us or e—mail us. programme, you can call us or e—mail us. you can find us on twitter and do have a look at our website. that's all from us, we will be back to hear your thoughts about bbc news coverage again next week. goodbye. this is bbc news, i'm lukwesa burak.

the headlines at 8pm. president trump confirms he will invoke emergency powers to pay for a border wall with mexico. we are going to be signing, today, and registering national emergency and registering national emergency and it's a great thing to do. the family of the british teenager shameema begum, who ran away to join the islamic state and now wants to come home to have her baby — call on the government to help her return to the uk as quickly as possible. thousands of pupils skip school, and take to the streets, in protest against climate change. how our personal data has been manipulated for political influence, sometimes at the highest levels of power.