The Guardian (Charlottetown)

Trudeau dogged by protesters as he visits B.C.

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A new radio telescope has allowed space watchers to see bursts of light travelling from a far-away galaxy in a discovery they say could open new doors in understand­ing the universe and the study of star systems.

The revolution­ary radio telescope housed in an observator­y south of Penticton, B.C., is at the centre of the Canadian Hydrogen Intensity Mapping Experiment, or CHIME.

It is a collaborat­ion by several North American universiti­es, including the University of British Columbia, the University of Toronto, McGill University, Yale and the National Research Council of Canada.

Deborah Good, a UBC PhD student working on the project, said unlike a normal radio dish, this radio telescope is made up of four cylinders containing 1,024 antennae that can measure fast, shortlived bursts of light found on the radio wave spectrum called fast radio bursts. Fast radio bursts are made up of photons, which are particles of light that can be dispersed by gas and dust found it space. The further away they are, the more dispersed they will be.

The telescope was originally designed to chart hydrogen and measure the historical expansion of the universe.

Good said the majority of the bursts they previously detected were measured around 1,400 megahertz, making the bursts detected on July 25 at 580 megahertz an illuminati­ng find.

While the telescope is extremely sensitive, Good said it’s a bit like looking for a needle in a haystack An interferom­etric radio telescope Observator­y in Okanagan Falls, B.C.

using a large magnifying glass.

“If you look in the right place, you’ll find it. It’s just hard to figure out where that place is,” she said.

Radio waves occur naturally from cosmic objects and lightning strikes, and are longer waves of light than the human eye can normally see, like the infrared and ultraviole­t spectrums.

On a typical day, the telescope detects between two and 50 fast radio bursts.

After a previous burst measuring 700 megahertz was spotted, Good said they were worried that might be the lowest frequency they could see with the telescope, or that perhaps they weren’t searching for the right frequencie­s.

“We’re kind of relieved to see at the Dominion Radio Astrophysi­cal

that, indeed, we get to see things in the lower half of the band,” she said during a telephone interview.

Good likened the telescope to studying a group of college students: observing 20 college students would not necessaril­y give you enough data to analyze, but if you studied several thousand, the data becomes significan­tly deeper and allows researcher­s to find trends.

“If I know there’s one guy with glasses, that doesn’t tell me if glasses are just a feature that college students can have, or if this guy is some other type of thing because he’s a college student with glasses,” Good said while explaining the importance of measuring more fast radio bursts so researcher­s can better understand what they’ve found so far.

Justin Trudeau mingled with hundreds of friendly people at two family-focused events on Vancouver Island, but the prime minister was also reminded of the strong opposition his government faces over the Trans Mountain pipeline expansion project.

At an outdoor news conference Saturday at the Forest Discovery Centre in Duncan, B.C., Trudeau acknowledg­ed there are people opposed to the government’s decision to buy the pipeline from Kinder Morgan. However, he said it won’t stop the project or Liberal plans to fight climate change.

“There are people out there who think there is still a choice to be made between what’s good for the environmen­t and what’s good for the economy. I don’t,” he said. “I know the only way to build a strong economy, moving forward, is by protecting the environmen­t, and ensuring we are protecting the environmen­t for future generation­s is a deep priority of mine. Always has been.”

In May, Trudeau’s Liberal government announced its decision to buy the Trans Mountain pipeline, which runs from Alberta to the B.C. coast, and related infrastruc­ture for $4.5 billion. It could also spend billions more to build the controvers­ial expansion.

“We know we have to put in place a strong plan to fight climate change,” said Trudeau. “There are people on the other side of the political spectrum who don’t like that.”

The prime minister shook a lot of hands and posed for photos, but some placard carrying protesters let him know the pipeline issue will continue to dog him.

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