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Elon Musk's Starlink internet-from-space satellites leave astronomers 'frustrated' – Euronews

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A total of 420 of Elon Musk’s Starlink satellites are now in low Earth orbit, promising new internet-from-space services, but leaving many astronomers aghast.

Cast your eyes up to the night sky in these pollution-free times here in Europe and you may very well see a train of satellites cruising across the stars.

They are visible without any special equipment, a distinct succession of lights against the blackness. These objects are the beginnings of the Starlink constellation, a privately-owned venture from Elon Musk’s SpaceX company promising to offer high-quality internet connections from space.

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The latest launch, on 22nd April, saw 60 satellites placed into orbit by a Falcon 9 rocket, bringing the total aloft to 420, enough to start the roll-out of basic services. It’s not entirely clear how many Starlink satellites will be launched, although it could rise to above 12,000 – enough for astronomers to see red.

Self destruct button?

German amateur astrophotographer Marcel Nowaczyk told Euronews: “From my point of view it is frustrating when you have to delete 25 per cent of your pictures during an imaging session. I’m a bit afraid of our future view of the night sky when there are 10,000 of them in orbit.”

Nowaczyk tweeted that he wished the satellites had some kind of ‘self-destruction inside’. Long-exposure photographs are the bread and butter of astrophotographers, and Starlink tends to leave large white lines right across their pictures. Some are enjoying the spectacle, others are not.

‘Brighter than every star in the sky’

Professor Mark McCaughrean, Senior Advisor for Science and Exploration at the European Space Agency (ESA) told Euronews: “I have to admit that personally, they make me nauseous. They just keep coming for many minutes, endlessly crossing the sky, drawing the eye’s attention, and occasionally flaring brighter than every star in the sky to boot.”

Starlink needs so many satellites because the system hands over connectivity between the spacecraft as they fly overhead, meaning faster speeds for customers on the ground.

The first phase will see around 1,600 satellites flying at 550 kilometres in altitude. Compare that to the far less numerous geostationary satellites delivering television signals to Earth from a point 36,000 kilometres away – certainly not something you’ll easily spot with your binoculars at night.

Musk’s firm isn’t alone in this emerging market, either. A similar plan from fellow tech billionaire Jeff Bezos involves over 3,200 internet-from-space satellites under the name Project Kuiper.

SpaceX is aware of the astronomers’ concerns and says it’s addressing them with anti-reflective surfaces on newer satellites – in short, it will paint them black – and what’s described as a ‘sunshade’ to reduce the reflection from satellites in the future.

Astronomer Jonathan McDowell from the Centre for Astrophysics (Harvard & Smithsonian) said he was “concerned about the potential that large numbers of bright satellites could both ruin professional observations and affect the look of the night sky”.

However he told us he was “encouraged by the measures that SpaceX are now taking to reduce that impact – they have clearly been listening to our concerns”.

Taking away ‘the birthright of all who live on this planet’

Other leading astronomers are taking it more personally, and aren’t afraid to say so.

Euronews reached Carolyn Porco, former imaging team leader on the NASA/ESA Cassini-Huygens mission to Saturn and visiting scholar at University of California at Berkeley,

“These developments and what could follow will ruin the night sky … not just for those engaged in the scientific study of the cosmos but for those of us who find in its glory solace, perspective, and the meaning of one’s life.

It is the only sight to gaze upon that is 13.8 billion years old. You rob us of that, you’ve taken away the birthright of all who live on this planet,” she wrote.

The risk of in-orbit collision

Longer-term the reflectivity issue that now makes Starlink so easy to spot may be partially overcome, but experts including Porco are still concerned about the risk of collision posed by a massive privately-run constellation in such a crowded orbital zone.

The ‘final frontier’ of space isn’t so empty these days, at least near Earth, with about 1,500 active satellites, 2,200 defunct satellites and, according to ESA, millions of tiny fragments of space debris in orbit.

Adding tens of thousands of new satellites to crowded orbital pathways is considered a serious future hazard, especially given that the space sector is largely self-regulating, and some pieces of space junk have just been abandoned to spin out of control.

Porco said there are “insufficient plans for what to do in the event of a collision, or in the event that one of the owners goes bankrupt and can no longer direct his many assets.”

It’s a concern shared by Dutch space debris expert Dr Marco Langbroek, who messaged to say that he is concerned about space safety as future Starlink launches loom.

“The sight of those passing in file over a ~20-minute timespan, 5-8 of them visible at the same time, almost looks like Science Fiction: the Mothership unloading the invasion fleet,” he joked.

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NASA hears from Voyager 1, the most distant spacecraft from Earth, after months of quiet

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CAPE CANAVERAL, Fla. (AP) – NASA has finally heard back from Voyager 1 again in a way that makes sense.

The most distant spacecraft from Earth stopped sending back understandable data last November. Flight controllers traced the blank communication to a bad computer chip and rearranged the spacecraft’s coding to work around the trouble.

NASA’s Jet Propulsion Laboratory in Southern California declared success after receiving good engineering updates late last week. The team is still working to restore transmission of the science data.

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It takes 22 1/2 hours to send a signal to Voyager 1, more than 15 billion miles (24 billion kilometers) away in interstellar space. The signal travel time is double that for a round trip.

Contact was never lost, rather it was like making a phone call where you can’t hear the person on the other end, a JPL spokeswoman said Tuesday.

Launched in 1977 to study Jupiter and Saturn, Voyager 1 has been exploring interstellar space – the space between star systems – since 2012. Its twin, Voyager 2, is 12.6 billion miles (20 billion kilometers) away and still working fine.

 

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SpaceX launches 23 Starlink satellites from Florida (photos)

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SpaceX sent yet another batch of its Starlink internet satellites skyward today (April 23).

A Falcon 9 rocket topped with 23 Starlink spacecraft lifted off from Florida’s Cape Canaveral Space Force Station today at 6:17 p.m. EDT (2217 GMT).

The Falcon 9’s first stage came back to Earth for a vertical landing about 8.5 minutes after launch as planned. It touched down on the SpaceX droneship Just Read the Instructions, which was stationed in the Atlantic Ocean.

It was the ninth launch and landing for this particular booster, according to a SpaceX mission description. Five of its previous eight liftoffs were Starlink missions.

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The Falcon 9’s upper stage will continue carrying the 23 Starlink satellites toward low Earth orbit (LEO) today, deploying them about 65 minutes after liftoff.

This evening’s launch was the 41st of the year for SpaceX, and the 28th of 2024 dedicated to building out the huge and ever-growing Starlink megaconstellation. There are nearly 5,800 operational Starlink satellites in LEO at the moment, according to astrophysicist and satellite tracker Jonathan McDowell.

The Starlink launch ended up being the first half of a spaceflight doubleheader: A Rocket Lab Electron vehicle launched two satellites, including a NASA solar-sailing technology demonstrator, from New Zealand today at 6:33 p.m. EDT (2233 GMT).

Editor’s note: This story was updated at 6:30 p.m. ET on April 23 with news of successful launch and first-stage landing.

 

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Exploring ecological networks in a digital world | News | Vancouver Island University | Canada – Vancouver Island University News

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Getting to know Samantha Letourneau

By day, Samantha Letourneau is Vancouver Island University’s Canada Learning Bond project lead and Volunteer Tutor Coordinator. She’s also a musician and dancer and for the past two years, she’s been collaborating with Swedish artist Mårten Spångberg, thanks to funding obtained through Crimson Coast Dance, to create a digital art installation that goes live on Friday, April 26. A launch event takes place at Black Rabbit restaurant in the Old City Quarter that night. Samantha is also hosting a creative process workshop on April 27 and 28.

Can you share a bit about your background as an artist and how you got into it?

I have been working in art for a very long time, as a musician and dancer as well as an art administrator and program coordinator. I started music at the age of 11 and dance came later in my life in my early 20s. I always wanted to do dance, but I grew up in a small community in Yellowknife and at that time the only dance classes available were highland dancing, which I was not very interested in. 

In my early 20s while living in Vancouver, I took classes in contemporary dance and was fortunate to land a small part in the Karen Jameison Dance company for a piece called The River. The River was about rivers and connection between the reality of a real and physical outdoor river and the different reality of “the river within.” It was both a piece of art and outreach for the community. It included working with the S’pak’wus Slu’lum Dancers of the Squamish Nation. Somewhat ground-breaking for 1998.

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From there I was hooked and wanted to do more in dance. I studied a lot and took many classes. Fast forward to now, I have been involved with productions and performances with Crimson Coast Dance for more than 15 years and greatly appreciate the talent and innovation that Artistic Director Holly Bright has brought to this community. She is amazing and very supportive of artists in Nanaimo.

How did this international exchange come about?

The Nordic/Nanaimo exchange is one of the innovative projects Holly created. At the height of the pandemic, funded by BC Arts Council and Made In BC, Crimson Coast Dance embarked on a project that explored the ways in which Nanaimo artists could participate in online exchanges. 

Two artists in Nanaimo – myself and Genevieve Johnson – were introduced to artists from Europe and supported through this international exchange. My collaborator, Mårten Spångberg, is a Swedish artist living and working in Berlin. An extension of that exchange is funded by Canada Council for the Arts – Digital Now.

What brought Mårten and myself together – and I quote Mårten here – is “questions around climate change, ecology and the influence contemporary society has on its environments. We are not interested in making art about the ecological crises or informing our audience about the urgency that climate change implies, but instead through our research develop work that in itself proposes, practices and engages in alternative ecologies.”

We share an understanding that art is a unique place, in the sense of practice, activation, performance and event, through which alternative ecologies can emerge and be probed and analyzed.

Tell us about the launch event.

We are launching the digital art installation that Mårten and I created on April 26 at The Attic at Black Rabbit Restaurant. The event is free to attend but people must sign up as seating is limited. I produced video art with soundscapes that I recorded mixing field recordings with voice and instrumentation. Marten explores text, imagery and AI.

My focus is on the evolving and ongoing process of how we communicate with each other and to nature within a digital context.

During our collaboration, Mårten and I talked about networks, though not just the expansive digital network of the internet but of nature. We shared thoughts on mycelium, a network of fungal threads or hyphae, that lately has received much attention on the importance of its function for the environment, including human beings.

Building off this concept, ideas of digital and ecological landscapes being connected emerged. From this we worked both collaboratively and individually to produce material for this digital project. Mårten will be there via Zoom as well and we will talk about this two-year process and the work we created together.

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