Starlink satellites spotted as 'bright line' moved across Saskatchewan's night sky
Cole Bratushesky was lost for words, and an explanation, as he watched a bright line move across the sky Sunday night in Regina around 10 p.m.
“I look up and there’s a tube probably about three to six kilometers long, and just lights. Just lights, lights, lights,” he said.
“I’m wondering, ‘What the heck is this?’”
It was not a bird. It was not a plane. And despite Bratushesky’s first thought, it was not a UFO.
Astronomy professor Samantha Lawler has been fielding a number of questions about the train of lights in the last few days.
While she said it is “very freaky looking,” the lights are nothing more than satellites—53 SpaceX Starlink satellites to be exact.
“When they are first launched they are in a much lower altitude orbit and they are very close together so your eye actually can’t resolve the individual satellites,” Lawler said.
“It just looks like a very bright line moving across the sky.”
The growing influx of Starlink satellites over Saskatchewan's night skies have caused many residents to question what's happening over their heads.
According to the SpaceX website, the company launched the satellites to low-Earth orbit from Cape Canaveral Space Force Station in Florida on April 29.
As days pass, the satellites will spread out, she said, reaching an orbit 550 kilometres above Earth. The satellites will still be visible, but not as bright.
While it will not be a permanent fixture in the night sky, Lawler said Starlink launches are “quite frequent,” which means it is “pretty common” to see this line of lights in the sky.
Starlink satellites are designed to deliver high-speed, broadband internet worldwide, including places where access has been unreliable, expensive or unavailable, according to its website.
CHANGING THE NIGHT SKY
There are more than 2000 Starlink satellites in orbit that make up more than one third of all active satellites, Lawler said.
As more satellites launch as planned, Lawler is worried of the impacts, including light pollution.
“They effectively dominate one particular altitude orbit,” she said, referring to the Starlink network.
“They are changing the way the night sky looks. When you go outside at night, if it’s within a couple hours of sunrise or sunset you will see Starlink satellites. They are bright and easily visible.”
Starlink provides a “very useful service,” Lawler said, but she believes the satellites can be engineered in a dark, safer and cleaner way.
On its website, Starlink said it has taken an experimental approach to reducing the brightness of its satellites, adding orbital brightness is “an extremely difficult problem to tackle analytically.”
The company said it works with astronomers to reduce satellite brightness and protect the natural night sky.
Aside from aesthetics, Lawler said further increasing the high-density orbit could lead to what is known as Kessler Syndrome.
“When two satellites collide it makes a bunch of debris that collides with more satellites that makes more debris,” she said.
“All of a sudden that part of orbit is unusable.”
An oversaturation of space junk, or debris, in that part of the atmosphere could impact future space flights, satellite launches, space telescopes and weather satellites, according to Lawler.
There are no environmental regulations in outer space, Lawler said, which is another concern for the astronomer.
Faulty or aging satellites that need to be replaced will “de-orbit” and burn up in the atmosphere. It is a quick and safe process, SpaceX said.
However, Lawler said it is still too soon to tell what impact it could have on the atmosphere.
She said there are discussions around regulating outer space and the atmosphere. However, regulations would have to happen at the international level. This would mean bringing the issue to the United Nations, which will take several years.
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