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The particle detectors at CERN are like cathedral-sized 3D digital cameras, capable of recording hundreds of millions of collision events per second. The detectors consist of multiple'layers' of detecting equipment, designed to recognise different types of charged particles produced by the collisions at the heart of the detector. As the charged particles fly outwards through the various layers of the detector, they leave traces, or'hits'. Tracking is the art of connecting the hits to recreate trajectories, thus helping researchers to understand more about and identify the particles. The algorithms used to reconstruct the collision events by identifying which dots belong to which charged particles can be very computationally expensive.


UN Rights Office: Turkey Should Probe Killings, Abuses

U.S. News

Combo from satellite photos provided by UNOSAT shows the city of Sur in Turkey's Diyarbakir Province on June 22, 2015, top, and on July 26, 2016 bottom. In a report released Friday, March 10, 2017 the U.N. human rights office is calling on Turkey's government to investigate alleged killings and other abuses in the country's southeast in a new report decrying violations including hundreds of alleged unlawful killings and the obliteration of nearly 1,800 buildings during security force operations over 18 months.


Syria aid convoy was hit by an air strike: UN

Al Jazeera

Analysis of satellite imagery of a deadly attack on an aid convoy in Syria last month showed that it was an air strike, a UN expert said on Wednesday. At least 20 people were killed in the attack on the UN and Syrian Arab Red Crescent convoy at Urm al-Kubra near the northern city of Aleppo which destroyed 18 of 31 lorries, a warehouse and clinic. The United States blamed two Russian fighter jets that it said were in the skies above the area at the time of the incident. Moscow denies the charge and says the convoy caught fire. "With our analysis we determined it was an air strike and I think multiple other sources have said that as well," Lars Bromley, research adviser at UNOSAT, told a news conference.



UN releases satellite images of damage in Syria's Aleppo

Associated Press

In this still image taken from video provided by the Syrian government-controlled Syrian Central Military Media, damaged buildings inside the Bustan Al-Basha neighborhood of Aleppo, Syria on Tuesday, Oct. 4, 2016. In this still image taken from video provided by the Syrian government-controlled Syrian Central Military Media, government troops patrol inside the Bustan Al-Basha neighborhood of Aleppo, Syria on Tuesday, Oct. 4, 2016. The release coincided with a stepped-up offensive by Syrian government forces and their allies attacking the city from the south in a bid to penetrate opposition-controlled areas, where the U.N. estimates 275,000 people are trapped in a government siege. The Turkish military launched an offensive inside Syria in August, backing Syrian rebels, to push Islamic State group militants from its borders and curb the advances of Syrian Kurdish forces, which it sees as an extension of its own outlawed Kurdish rebels.