A mysterious radio signal from a nearby star system that was detected in 2019 isn鈥檛 coming from aliens, scientists say.
Instead, the signal was likely caused by interference from Earth, according published Wednesday in the journal Nature Astronomy.
鈥淚t is human-made radio interference from some technology, probably on the surface of the Earth,鈥 Sofia Sheikh, an astronomer at the University of California (UC), Berkeley, and co-author of both papers,
Although this means yet another dead end in the search for intelligent life out in space, scientists say that investigating this signal was a promising step that allowed them to hone their skills in finding the origin of signals.
鈥淚t鈥檚 really valuable for us to have these dry runs,鈥 Jason Wright, an astronomer at Pennsylvania State University in University Park, said in the article. 鈥淲e need these candidate signals so we can learn how we will deal with them 鈥 how to prove they are extraterrestrial or human-made.鈥
One of the reasons this signal was so promising was because it was the first time that data from Breakthrough Listen 鈥 a privately funded project that scans the skies for radio signals from one million of the closest stars to Earth 鈥 had passed screening tests to rule out immediate other explanations.
The signal, dubbed 鈥淏reakthrough Listen candidate 1鈥 (BLC1), was first detected by Shane Smith, an undergraduate student at Hillsdale College in Michigan, while he was working as a research intern with Breakthrough Listen.
The signal only appeared when the Parkes Murriyang radio telescope was pointed in the direction of Proxima Centauri, the nearest star to our solar system, only 4.2 light-years away.
This was exciting not only because of the apparent proximity of the signal, but because Proxima Centauri鈥檚 system has been one of interest for years. The star is orbited by at least two planets, one of which is believed to have the right circumstances for liquid water on its surface, something scientists look for in other planets when searching for signs of life, or environments that could support it.
In the BLC1 data, there were more than four million signals from the vicinity of the star, but one signal lasted for five hours and appeared to come directly from the star itself. It also displayed a draft rate that changed smoothly over time, the way something in a rotational or orbital environment might.
Scientists could not find any explanation that could rule out the signal when it was first identified. The radio frequency matched up with one reserved for aircraft, but scientist couldn鈥檛 find any aircraft that had been in the area, particularly for five hours.
However, when researchers pointed the telescope at Proxima Centauri in 2020 and 2021 at the same time of year as the original signal observance, they were unable to pick up the signal again.
The theory is that because the signal didn鈥檛 occur again, it likely came from radio frequency interference from malfunctioning technology on Earth that got shut down or fixed. If this is the case, it was likely within a few hundred kilometres of the Parkes telescope, underscoring the importance for simultaneous confirmation of signals using telescopes in other centres.
One thing that this case led to was the creation of a verification 鈥渢oolkit鈥 for future signals of interest for intelligent life, according to one of the papers. of things that need to be done in the event of a mysterious signal, including verifying first that all instrumentation is working correctly, comparing the drift rate evolution of the signal to those of known man-made technology, search for other potential instances of the signal in the archives and search for similar signals at other frequencies, among other steps.
鈥淭he Universe gives us a haystack,鈥 Ravi Kopparapu, a planetary scientist at NASA鈥檚 Goddard Space Flight Center in Greenbelt, Maryland, said in Nature. 鈥淚t is our need to find the needle in it, and make sure that it is actually a needle that we found.鈥
Two Canadians are among those killed in southern Lebanon, Global Affairs Canada confirmed late Tuesday. While GAC has not confirmed their names due to privacy, family members tell 麻豆传媒 the two people killed are Hussein and Daad Tabaja.
An image of the unidentified object shot down over Canada's Yukon territory in February 2023 has been obtained by CTVNews.ca.
MPs debated the first non-confidence motion of the fall House of Commons sitting today, seeing Conservative Leader Pierre Poilievre push once again for a snap election. But with votes secured to keep them afloat, Prime Minister Justin Trudeau's Liberals were quick to turn the discussion into a referendum on the Conservative alternative.
A city councillor in British Columbia says an online mob of "extremists" and "politically motivated hackers" is responsible for uncovering and publicizing a photo of him wearing a blackface costume to a Halloween party in 2007.
The federal government has 'no intention' of pausing the next planned increase to the carbon price, Environment Minister Steven Guilbeault confirms.
After Ontario Premier Doug Ford made controversial comments about solutions to get people out of homeless encampments, advocates and members of the opposition spoke up on Tuesday.
Four puppies were found near County Road 21 in Essa Township after a passerby spotted one when it ran out of the ditch and onto the road.
We've all had neighbours we didn't like, but two people from Sault Ste. Marie have been awarded more than half a million dollars for the 'extreme' behaviour of the people who lived next to them.
A Missouri man convicted of breaking into a woman鈥檚 home and repeatedly stabbing her was executed Tuesday over the objections of the victim鈥檚 family and the prosecutor, who wanted the death sentence commuted to life in prison.
An advocate organization is calling for an inquiry following the death of a six-year-old boy who went missing in Shamattawa First Nation.
The smoke over the Port of Montreal has dissipated, but the fire in a container filled with 15,000 kilograms of lithium batteries prompted firefighters to issue a warning about how common these incidents have become.
A team at the University of Waterloo are developing a process to 3D-print bones, which could dramatically improve the quality of life for cancer and trauma patients.
More Canadians are installing solar panels on their homes, but some are facing challenges when it comes to getting home insurance after the panels are put in.
Four puppies were found near County Road 21 in Essa Township after a passerby spotted one when it ran out of the ditch and onto the road.
After Ontario Premier Doug Ford made controversial comments about solutions to get people out of homeless encampments, advocates and members of the opposition spoke up on Tuesday.
A Missouri man convicted of breaking into a woman鈥檚 home and repeatedly stabbing her was executed Tuesday over the objections of the victim鈥檚 family and the prosecutor, who wanted the death sentence commuted to life in prison.
Kg rockets, missiles and drones into northern Israel in solidarity with Palestinians in Gaza and its ally Hamas, a fellow Iran-backed militant group. Israel has responded with increasingly heavy airstrikes and the targeted killing of Hezbollah commanders while threatening a wider operation.
Iran鈥檚 new president signaled to world leaders Tuesday that he wants to open a 'constructive' chapter in his country鈥檚 international relations 鈥 but he made clear that everyone else, including the United States, needs to do their part.
A man who authorities say staked out Donald Trump for 12 hours on his golf course in Florida and wrote of his desire to kill him was indicted Tuesday on an attempted assassination charge.
Special counsel Jack Smith this week will be allowed to file hundreds of pages of legal arguments and evidence gathered in the 2020 election subversion and Jan. 6 U.S. Capitol attack criminal case against former president Donald Trump, a federal judge ruled Tuesday.
A federal judge sentenced FTX co-founder Sam Bankman-Fried鈥檚 former girlfriend to two years in prison, citing her extensive cooperation with prosecutors that led to the conviction of the former face of the cryptocurrency industry in one of the largest financial frauds in U.S. history.
The federal government has 'no intention' of pausing the next planned increase to the carbon price, Environment Minister Steven Guilbeault confirms.
U.S. President Joe Biden reflected on the motivation behind his decision to step away from politics and sent a message of unity to global leaders gathered at a time of increasing division and geopolitical instability.
MPs debated the first non-confidence motion of the fall House of Commons sitting today, seeing Conservative Leader Pierre Poilievre push once again for a snap election. But with votes secured to keep them afloat, Prime Minister Justin Trudeau's Liberals were quick to turn the discussion into a referendum on the Conservative alternative.
The federal Liberals are creating a new agency to beef up Canada's ability to handle rapidly spreading infectious diseases and protect from future pandemics.
A team at the University of Waterloo are developing a process to 3D-print bones, which could dramatically improve the quality of life for cancer and trauma patients.
The province has announced a new plan to lower the age for mammogram self-referrals to 40 from 50 in an effort to get more Manitobans screened for breast cancer.
The smoke over the Port of Montreal has dissipated, but the fire in a container filled with 15,000 kilograms of lithium batteries prompted firefighters to issue a warning about how common these incidents have become.
Questions are being raised over the use of body cameras in stores as a way to combat crime.
Scientists have discovered a new species of ghost shark that lives in deep ocean waters near Australia and New Zealand.
The Crown's key witness in the sexual assault trial against former Hedley frontman Jacob Hoggard will take the stand in a northern Ontario courtroom Tuesday afternoon following the judge's instructions to the jury.
Drake wasn't around to accept a handful of trophies at the SOCAN Awards on Tuesday, but the rapper's presence was still looming large at the celebration of Canadian songwriters.
Another woman sued Sean 'Diddy' Combs on Tuesday, alleging that the music mogul and his head of security raped her and recorded it on video at his New York recording studio in 2001.
Given the continued progress the Bank of Canada has made in bringing inflation back down to the 2 per cent target, it is reasonable to expect more rate cuts, Governor Tiff Macklem said on Tuesday.
Some Royal Bank of Canada employees who joined when the bank acquired HSBC Canada worry they could lose their jobs when RBC's six-month guarantee to keep them expires this month, according to six sources familiar with the situation.
Metro Vancouver grain terminal workers are now on strike, bringing tens of millions of dollars of exports to a standstill.
From cellphone 'hotels' to patchwork policies to recalibrating lesson plans, teachers and schools across Canada are learning to navigate a classroom without cellphones.
An ordinary day on the job delivering mail in East Elmwood quickly turned dramatic for Canada Post letter carrier Jared Plourde. A woman on his route was calling out in distress.
The Newcomers Football Club, an impromptu team made up of asylum-seekers, has helped provide Boubacar Lukaku and others with a joy that erases their stress. And it's helped connect them with a supportive community as they navigate the challenges of a new country.
Watching Connor McDavid screaming in a locker room is something hockey fans didn't necessarily expect.
Pro Football Hall of Fame quarterback Brett Favre revealed Tuesday at a hearing on federal welfare reform that he has been diagnosed with Parkinson's disease.
American gymnast Jordan Chiles鈥檚 legal team has submitted a new application in the Federal Supreme Court of Switzerland over the decision that led to her losing an Olympic bronze medal, pointing toward new video evidence that Chiles鈥檚 lawyers say proves her case.
The Canada Border Services Agency (CBSA) reported this week that officers in the agency's Montreal Marine and Rail Services seized 78 vehicles and transferred them to police. Numbers of stolen vehicles in Quebec continue to skyrocket.
Struggling Jeep and Ram maker Stellantis is looking for a CEO to succeed Carlos Tavares, but the company says it's just part of a normal leadership succession plan.
The U.S. Commerce Department on Monday will propose a ban on the sale or import of smart vehicles that use specific Chinese or Russian technology because of national security concerns, according to U.S. officials.
Police are looking to the public for help after thieves broke into a Lethbridge ice creamery, stealing from the store.
An ordinary day on the job delivering mail in East Elmwood quickly turned dramatic for Canada Post letter carrier Jared Plourde. A woman on his route was calling out in distress.
Fire has destroyed a barn and 17,000 plants at a family-owned business in Lower Coverdale, N.B.
Before influencers on social media, Canada鈥檚 Jeanne Beker was bringing the world of high fashion down to earth and as Calgary鈥檚 Glenbow Museum gets a major make-over, it will include a new exhibition showcasing the pop culture icon.
A sea lion swam free after a rescue team disentangled it near Vancouver Island earlier this week.
A Nova Scotian YouTuber has launched a mini-truck bookmobile.
Cole Haas is more than just an avid fan of the F.W. Johnson Wildcats football team. He's a fixture on the sidelines, a source of encouragement, and a beloved member of the team.
Getting a photograph of a rainbow? Common. Getting a photo of a lightning strike? Rare. Getting a photo of both at the same time? Extremely rare, but it happened to a Manitoba photographer this week.
An anonymous business owner paid off the mortgage for a New Brunswick not-for-profit.
Less than one month before voters cast their ballots in the provincial election, a new poll of British Columbians shows half of respondents fear for their safety in their own communities.
A new report from Re/Max shows it's becoming increasingly unrealistic for most people to buy a detached home in Metro Vancouver.
Jericho Pier has been closed to the public since a storm battered it in January 2022 鈥 but now, the Vancouver Park Board has approved a plan to repair it at a cost of $1 million.
Ontario's ministry of education is now officially investigating a Toronto District School Board (TDSB) field trip at an Indigenous rights rally students participated in, where pro-Palestinian slogans were later chanted.
A woman fatally struck in a collision in The Junction neighbourhood on Monday evening is being remembered as a 'wonderful and beautiful person' who was a beloved member of Toronto's jazz community.
An 18-year-old woman who allegedly stole a Porsche and then ran over its owner in a caught-on-video incident in Mississauga earlier this month is now facing auto theft charges in Toronto.
Alberta's premier wants to reinforce the ability to choose whether to receive a vaccination or other medical procedures through changes to the province's Bill of Rights.
In-street signs meant to slow drivers down and keep pedestrians safe are having to be replaced at a rapid rate in Calgary because they're being hit by vehicles.
A Calgary man is facing child pornography charges after an investigation uncovered years of messages exchanged with an alleged felon.
The City of Ottawa has found more than $564,000 in back taxes are no longer able to be recovered and staff are recommending councillors approve writing it off.
Ottawa police say two people under the age of 18 have been arrested following an incident that prompted a lockdown at Glebe Collegiate Institute around the noon hour Tuesday.
After Ontario Premier Doug Ford made controversial comments about solutions to get people out of homeless encampments, advocates and members of the opposition spoke up on Tuesday.
The heat is rising for Quebec Premier Fran莽ois Legault as opposition parties demand answers about his government's investment in the planned Northvolt battery factory near Montreal.
Quebec's language watchdog received a record number of complaints from citizens last year and carried out an increasing number of inspections on employers.
Quebec's minister responsible for relations with First Nations and Inuit says northern communities can't opt out of paying their electricity bills.
Local leaders are echoing concerns about doctor shortages as the organization representing Alberta's doctors warns nearly half of the physicians surveyed are considering leaving the province within five years.
One person was hospitalized after a crash involving a Valley Line Southeast LRT train and a semi Tuesday morning.
While Oilers head coach Kris Knoblauch and his staff still have two weeks of training camp to decide who stays and who goes to cement the 23-man roster for opening night, onlookers saw what could well be the makeup of the squad come Oct. 9's home game against the Winnipeg Jets.
Questions are being raised over the use of body cameras in stores as a way to combat crime.
As temperatures cool down, the Halifax Regional Municipality is serving eviction notices to residents at one of the city鈥檚 larger tent encampments.
An image of the unidentified object shot down over Canada's Yukon territory in February 2023 has been obtained by CTVNews.ca.
An advocate organization is calling for an inquiry following the death of a six-year-old boy who went missing in Shamattawa First Nation.
An MLA recently kicked out of the NDP caucus says he is setting the record straight about a controversial handshake between PC MLA Obby Khan and Premier Wab Kinew.
Summer officially gave way to autumn on Sunday, but Winnipeg鈥檚 construction season is far from over with work continuing on regional roadways and residential streets.
Saskatchewan鈥檚 Serious Incident Response Team (SIRT) has been deployed following a fatal officer-involved shooting on Fishing Lake First Nation.
An appeal hearing stemming from a court challenge of the Government of Saskatchewan's Parents' Bill of Rights has come to a close.
A new program is expanding the capacity of breast cancer screening services across Saskatchewan, and a fundraising campaign is underway to get it done. This all comes as age requirement have been lowered for mammogram screening starting in the new year.
A reward of up to $50K has been issued by Waterloo Regional Police for information leading to the conviction of the person or persons responsible for the fatal stabbing of 18-year-old Joshua Bennett.
Newlyweds claim the company they hired to take their wedding photos and videos took off with their precious memories 鈥 and their money.
Back in July, a plot of land had an immature crop of corn destroyed. It was an action that outraged local farmers. Now, a new report into the matter has been released and will be presented to regional council Wednesday.
Saskatchewan鈥檚 Serious Incident Response Team (SIRT) has been deployed following a fatal officer-involved shooting on Fishing Lake First Nation.
The Government of Saskatchewan says a private Christian school, embroiled in abuse allegations, has proved it's met education ministry rules by formally disconnecting from an affiliated church. But, by some indications, connections remain.
An appeal hearing stemming from a court challenge of the Government of Saskatchewan's Parents' Bill of Rights has come to a close.
We've all had neighbours we didn't like, but two people from Sault Ste. Marie have been awarded more than half a million dollars for the 'extreme' behaviour of the people who lived next to them.
An image of the unidentified object shot down over Canada's Yukon territory in February 2023 has been obtained by CTVNews.ca.
A 49-year-old Sudbury woman who was killed in a tragic collision with a police boat June 7 on Nepewassi Lake was told to remain in a residence on an island until police returned to pick her up.
Hundreds of job seekers filled the halls hoping for some one-on-one time with employers, and to learn about opportunities from different job sectors.
The calls are growing louder for city council to tighten the rules governing short-term accommodations, including those advertised on websites like Airbnb and Vrbo, after students arrived by the busload at a rented house in the Masonville neighbourhood.
鈥淚 was going to make breakfast, and I put the frying pan on the stove and opened it and remembered I needed something from No Frills,鈥 said Frank Wall, who lives just north of Aylmer, Ont.
Three construction workers are being praised for their actions that police in Barrie say likely prevented an armed man from fleeing before being taken into custody.
Four puppies were found near County Road 21 in Essa Township after a passerby spotted one when it ran out of the ditch and onto the road.
An Uber driver was handed a 12-month driving ban on Tuesday following a collision that injured a pedestrian and killed a labrador retriever in Barrie.
Ward 3 councillor Renaldo Agostino feels a Ferris wheel is a no-brainer and has asked city administration to look into the possibility of one in a parking lot along the river front in downtown Windsor.
A person from Windsor has died in a collision on Highway 59 in Oxford County.
A road in Essex County has reopened following a multi-vehicle crash. According to OPP, County Road 20 had been closed between Iler road and McCormick Road in Harrow.
A city councillor in British Columbia says an online mob of "extremists" and "politically motivated hackers" is responsible for uncovering and publicizing a photo of him wearing a blackface costume to a Halloween party in 2007.
Less than one month before voters cast their ballots in the provincial election, a new poll of British Columbians shows half of respondents fear for their safety in their own communities.
A boater was rescued on Monday evening after spending three hours in the frigid waters off Vancouver Island.
A pair of runaway pigs are in the custody of an animal sanctuary in the Okanagan after evading police and volunteers for hours earlier this week.
The Red Bridge, a historic landmark in Kamloops, B.C., was completely destroyed by fire early Thursday morning.
Animal protection officers in British Columbia have rescued three pit bulls 鈥 including one that gave birth to 10 puppies 鈥 from a rat-infested home in Kelowna.
Dozens of police officers and support workers have come to Lethbridge for the Social Disorder and Urban Crime Conference.
Police are looking to the public for help after thieves broke into a Lethbridge ice creamery, stealing from the store.
To make higher education an easier step to take for Indigenous students, the University of Lethbridge is dropping some fees for those applicants.
A 25-year-old suspect was charged with impaired driving Sept. 21 after police spotted two people without helmets on an ATV on Sand Bay Road in Goulais River.
A federal offender who was last seen in Sudbury is wanted on a Canada-wide warrant for allegedly breaching his statutory release conditions.
The Crown's key witness in the sexual assault trial against former Hedley frontman Jacob Hoggard will take the stand in a northern Ontario courtroom Tuesday afternoon following the judge's instructions to the jury.
Newfoundland and Labrador sponsored a minor football team in England, now they鈥檙e about to play one of the biggest clubs in European soccer.
Newfoundland and Labrador's chief medical officer is monitoring the rise of whooping cough infections across the province as cases of the highly contagious disease continue to grow across Canada.
A 16-year-old biennial event aimed at fostering business in the country's eastern Arctic and northern regions has been cancelled indefinitely as a dispute unfolds between Inuit in Canada and a Labrador group claiming to share their heritage.
The Shopping Trends team is independent of the journalists at 麻豆传媒. We may earn a commission when you use our links to shop.聽Read about us.
