Couple randomly attacked, 1 stabbed, by group of teens in Toronto, police say
A man has been transported to hospital after police say he was stabbed in a random attack carried out by a group of teens in Toronto on Friday night.
Just a couple of weeks after the Ingenuity helicopter celebrated a year of flying on Mars, things got quiet.
For the first time, the Ingenuity team on Earth lost contact with Ingenuity on sols 427 and 428, or Martian days that correspond with May 3 and May 4. The little chopper's engineers spent a week investigating what might have caused the communication blackout.
The team discovered that loss of contact occurred because Ingenuity experienced insufficient battery charge as night fell. This reduced voltage reset the mission clock, causing the helicopter's system to be out of sync with its companion, the Perseverance rover. While Ingenuity has returned to relaying messages reliably to Earth through the rover, the team expects this issue could happen again.
That's because it's early winter on Mars. Winter on the red planet will last until September or October. During Martian winter, dust gets lofted into the atmosphere and obscures the light necessary to charge Ingenuity's solar panels.
So far, Ingenuity has logged 4.2 miles (6.8 kilometers) across 28 different flights.
The helicopter remains healthy and has resumed operations, albeit a bit modified, and the team remains optimistic that Ingenuity will soon go for its 29th flight. But there is no mistaking that Ingenuity is on borrowed time.
"Challenges like these are to be expected: After hundreds of sols and dozens of flights beyond the five flights originally planned, the solar-powered helicopter is in uncharted terrain," Teddy Tzanetos, Ingenuity team lead at NASA's Jet Propulsion Laboratory in Pasadena, California, wrote in an update.
"We are now operating far outside our original design limits. Historically, Mars is very challenging for spacecraft (particularly solar-powered spacecraft). Each sol could be Ingenuity's last."
With winter on Mars, Ingenuity will experience more dust in the air and dropping temperatures -- both of which could wreak havoc on the chopper's ability to stay powered, warm and operational.
As a result, Ingenuity will no longer be able to maintain its battery and electronics at a programmed temperature threshold of minus 13 degrees Fahrenheit (minus 25 degrees Celsius) using heaters.
Instead, the aerial vehicle will experience overnight temperatures of minus 112 degrees Fahrenheit (minus 80 degrees Celsius), which could pose a risk to any electronic components. So far, these are holding steady and haven't sustained damage during the frigid nights.
Each morning as the helicopter warms up and recharges, the blackout from the previous night will misalign the mission clock.
Perseverance has to be a little more creative now when communicating with Ingenuity. Basically, the rover has to allow for the helicopter "sleeping in" and waking up at the wrong time because of its clock issue. Using its onboard Helicopter Base Station, Perseverance is able to chat with Ingenuity each day and reprogram the chopper's mission clock for that day.
The Ingenuity team can't predict how Ingenuity's electronics core module components will perform throughout winter, but "cold-soaking electronics is believed to have caused the end of the Opportunity and Spirit Mars rover missions," Tzanetos wrote in the update.
Currently, Ingenuity reaches sunset on Mars with about a 68% state of charge for its battery. The chopper needs at least 70% to keep its heaters, clock and core electronics powered overnight, JPL engineers estimated.
"Our 2% (state-of-charge) deficit is expected to grow to a 7% deficit once we reach winter solstice (Sol 500 in July), at which point conditions will start to improve," Tzanetos wrote.
Retrieving data from Ingenuity, including its flight performance logs and color images from the previous eight flights, has become the top priority. Next, the mission team will determine if the helicopter is ready for another flight and have the chopper perform a high-speed spin of its rotors.
If Ingenuity is able to do a short flight to the southwest, the little copter will be in a good position to communicate with the Perseverance rover as it studies and collects samples from an ancient river delta.
The flight software team is also working on upgrades for Ingenuity's advanced navigation capabilities to help it fly over the river delta and continue operating as an aerial scout for the rover.
"The Perseverance and Ingenuity operations teams have done an extraordinary job in reestablishing reliable communications with Ingenuity," Tzanetos wrote.
A man has been transported to hospital after police say he was stabbed in a random attack carried out by a group of teens in Toronto on Friday night.
Ron Ellis, who played over 1,000 games with the Toronto Maple Leafs and was a member of Canada's team at the 1972 Summit Series, has died at age 79.
The wildfire that sparked Friday and caused evacuation orders for more than 3,000 people in Fort Nelson, B.C., and the nearby Fort Nelson First Nation, has grown to nearly 1,700 hectares in size, according to a Saturday morning update from the BC Wildfire Service.
Hours before the final, Dutch contestant Joost Klein was dramatically booted out by organizers over a backstage incident. He had failed to perform at two dress rehearsals on Friday, and contest organizer the European Broadcasting Union said it was investigating an "incident."
From London, to Grand Bend, Collingwood and Guelph, here are some highlights of Friday night and Saturday morning's northern lights display.
A growing number of civilians and police officers are demanding the dismissal and arrest of Haiti's police chief as heavily armed gangs launched a new attack in the capital of Port-au-Prince, seizing control of yet another police station early Saturday.
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The rolling hills leading to the hamlet of Rosebud are dotted with sprawling farms and cattle pastures -- and a sign sporting a simple message: No Race Track.
A family of fifth generation farmers from Ituna, Sask. are trying to find answers after discovering several strange objects lying on their land.
A Listowel, Ont. man, drafted by the Hamilton Tigercats last week, is also getting looks from the NFL, despite only playing 27 games of football in his life.
The threat of zebra mussels has prompted the federal government to temporarily ban watercraft from a Manitoba lake popular with tourists.
A small Ajax dessert shop that recently received a glowing review from celebrity food critic Keith Lee is being forced to move after a zoning complaint was made following the social media influencer’s visit last month.
The Canada Science and Technology Museum is inviting visitors to explore their poop. A new exhibition opens at the Ottawa museum on Friday called, 'Oh Crap! Rethinking human waste.'
The Regina Police Service says it is the first in Saskatchewan and possibly Canada to implement new technology in its detention facility that will offer real-time monitoring of detainees’ vital health metrics.
Just as she had feared, a restaurant owner from eastern Quebec who visited Montreal had her SUV stolen, but says it was all thanks to the kindness of strangers on the internet — not the police — that she got it back.
The stakes have been set for a bet between Vancouver and Edmonton's mayors on who will win Round 2 of the Stanley Cup playoffs.
A grieving mother is hosting a helmet drive in the hopes of protecting children on Manitoba First Nations from a similar tragedy that killed her daughter.