Italy boffins pivotal in opening new window on universe

Following the landmark discovery of gravitational waves on Thursday, Italian Prime Minister Matteo Renzi heaped praise on the Italian Institute for Nuclear Physics (INFN), which played a vital role in Thursday's game- changing discovery.

Italy boffins pivotal in opening new window on universe
Scientists confirmed the existence of gravitational waves on Thursday. Photo: Ligo

INFN scientists, working at the Virgo project in Cascina, near Pisa in Tuscany, collaborated closely with American counterparts to confirm the presence of gravitational waves first theorized by Albert Einstein 100 years ago.

Speaking to Ansa on Thursday, INFN president Fernando Ferroni said his staff had even received a congratulatory phone call from Matteo Renzi for their part in the discovery.

“It's a result that sets the seal on the theory of general relativity formulated exactly 100 years ago: it is a birthday present for Einstein,” Ferroni said.

“Even with great difficulties around us, we managed to find a way that leads us to discovery,” he added.

INFN boffins worked to analyze data sent by Scientists from the California Institute of Technology (Caltech), the Massachusetts Institute of Technology (MIT) and the Laser Interferometer Gravitational Wave Observatory (Ligo) who had been working on the detection of the waves for years.

At the Ligo observatory in the US, light beams were fired along two four-kilometer long tunnels. Scientists measured the interference of the lazers as the space between them was stretched and squashed by passing gravitational waves.

In order to measure an intergalactic phenomenon over 4km the precision needed was incredible – and involved 1,000 scientists from 14 countries and 90 universities around the globe.

What are gravitational waves?

Waves are produced by disturbances in the fabric of space and time when a massive object moves, like a black hole or a neutron star.

Einstein theorized that they would appear like ripples in a pond that form when a stone is thrown in the water, or like a net that bows under the weight of an object placed within – with the net serving as a metaphor for the bending of space-time. 

Why are they important?

The ability to observe these gravitational waves offers astronomers and physicists a new look at the most mysterious workings of the universe, including the fusion of neutron stars and the behaviors of black holes, which are often found in the centers of galaxies.

“The driving force of the universe is gravity,” said Tuck Stebbins, Gravitational Astrophysics Lab Chief at Nasa's Goddard Space Flight Center. 

“These waves are streaming to you all the time and if you could see them, you could see back to the first one trillionth of a second of the Big Bang,” he told AFP. 

“There is no other way for humanity to see the origin of the universe.”  

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German tourists among 13 dead in Italy cable car accident

Thirteen people, including German tourists, have been killed after a cable car disconnected and fell near the summit of the Mottarone mountain near Lake Maggiore in northern Italy.

German tourists among 13 dead in Italy cable car accident
The local emergency services published this photograph of the wreckage. Photo: Vigili del Fuoco

The accident was announced by Italy’s national fire and rescue service, Vigili del Fuoco, at 13.50 on Sunday, with the agency saying over Twitter that a helicopter from the nearby town of Varese was on the scene. 

Italy’s National Alpine and Speleological Rescue Corps confirmed that there were 13 victims and two seriously injured people.

Italian daily Corriere della Sera reported that German tourists were among the 13 victims.

According to their report, there were 15 passengers inside the car — which can hold 35 people — at the time a cable snapped, sending it tumbling into the forest below. Two seriously injured children, aged nine and five, were airlifted to hospital in Turin. 

The cable car takes tourists and locals from Stresa, a resort town on Lake Maggiore up to a panoramic peak on the Mottarone mountain, reaching some 1,500m above sea level. 

According to the newspaper, the car had been on its way from the lake to the mountain when the accident happened, with rescue operations complicated by the remote forest location where the car landed. 

The cable car had reopened on April 24th after the end of the second lockdown, and had undergone extensive renovations and refurbishments in 2016, which involved the cable undergoing magnetic particle inspection (MPI) to search for any defects. 

Prime Minister Mario Draghi said on Twitter that he expressed his “condolences to the families of the victims, with special thoughts for the seriously injured children and their families”.

Infrastructure Minister Enrico Giovannini told Italy’s Tg1 a commission of inquiry would be established, according to Corriere della Sera: “Our thoughts go out to those involved. The Ministry has initiated procedures to set up a commission and initiate checks on the controls carried out on the infrastructure.”

“Tomorrow morning I will be in Stresa on Lake Maggiore to meet the prefect and other authorities to decide what to do,” he said.