Connect with us

Gadgets

Deploy the space harpoon – TechCrunch

Published

on

Watch out, starwhales. There’s a new weapon for the interstellar dwellers whom you threaten with your planet-crushing gigaflippers, undergoing testing as we speak. This small-scale version may only be good for removing dangerous orbital debris, but in time it will pierce your hypercarbon hides and irredeemable sun-hearts.

Literally a space harpoon. (Credit: Airbus)

However, it would be irresponsible of me to speculate beyond what is possible today with the technology, so let a summary of the harpoon’s present capabilities suffice.

The space harpoon is part of the RemoveDEBRIS project, a multi-organization European effort to create and test methods of reducing space debris. There are thousands of little pieces of who knows what clogging up our orbital neighborhood, ranging in size from microscopic to potentially catastrophic.

There are as many ways to take down these rogue items as there are sizes and shapes of space junk; perhaps it’s enough to use a laser to edge a small piece down toward orbital decay, but larger items require more hands-on solutions. And seemingly all nautical in origin: RemoveDEBRIS has a net, a sail and a harpoon. No cannon?

You can see how the three items are meant to operate here:

The harpoon is meant for larger targets, for example full-size satellites that have malfunctioned and are drifting from their orbit. A simple mass driver could knock them toward the Earth, but capturing them and controlling descent is a more controlled technique.

While an ordinary harpoon would simply be hurled by the likes of Queequeg or Dagoo, in space it’s a bit different. Sadly it’s impractical to suit up a harpooner for EVA missions. So the whole thing has to be automated. Fortunately the organization is also testing computer vision systems that can identify and track targets. From there it’s just a matter of firing the harpoon at it and reeling it in, which is what the satellite demonstrated today.

This Airbus-designed little item is much like a toggling harpoon, which has a piece that flips out once it pierces the target. Obviously it’s a single-use device, but it’s not particularly large and several could be deployed on different interception orbits at once. Once reeled in, a drag sail (seen in the video above) could be deployed to hasten reentry. The whole thing could be done with little or no propellant, which greatly simplifies operation.

Obviously it’s not yet a threat to the starwhales. But we’ll get there. We’ll get those monsters good one day.

Source link

Continue Reading
Click to comment

Leave a Reply

Your email address will not be published. Required fields are marked *

Gadgets

macOS 12 Monterey: The Ars Technica review

Published

on

Big Sur was a landmark release of macOS, in ways both technical and symbolic. It introduced a major new redesign, it was the first version of macOS to run on Apple’s own in-house processors in addition to Intel’s, and it was the first version of macOS in nearly 20 years to change the version number. Coming off that, this year’s release was bound to feel a little small.

Welcome to Monterey, macOS version 12.0.

Monterey feels of a piece with maintenance-mode macOS updates like El Capitan or Sierra or High Sierra—change the default wallpaper, and in day-to-day use you can easily forget that you’ve upgraded from Big Sur at all. It’s not that there aren’t any new features here—it’s just that improving any operating system as mature as macOS involves a lot of tinkering around the edges.

But there are plenty of things to talk about in even the most minor of macOS releases, and Monterey is no different. The update refines the Big Sur design and rethinks automation and what’s possible via local wireless communication between devices. It also makes a long list of minor additions that won’t be exciting for everyone but will be interesting for some subset of Mac users.

Continue Reading

Gadgets

LG is apparently working on its first Chromebook

Published

on

The market for Chromebooks is generally growing this year despite recent pandemic-related slowdowns, and it looks like more PC vendors are interested in releasing Chrome OS devices. The next in line may be LG.

On October 18, a filing was listed with the Bluetooth SIG, the special interest group that awards Bluetooth certifications, for an “LG Chromebook.” The listing, spotted by Chrome Unboxed, doesn’t give us much further information. The device’s model number is “11TC50Q,” and the machine should have some version of Bluetooth 5.

Without any official word from LG, we can’t be sure that the product exists. But since the company went through the effort of getting Bluetooth certification from Bluetooth SIG, an LG-branded Chromebook is far from a pipe dream. Plus, it would make sense for LG to release a Chromebook.

LG has its hands in many pots, from kitchen appliances to high-end TVs, audio solutions, and even solar panels. LG’s current PC lineup is centered on its Gram series of ultralight laptops. Since Chromebooks employ low-power parts, heat can be more manageable, allowing for thin and fanless designs. This also makes them a good option for travel.

As noted by Chrome Unboxed, LG made a Chrome OS-based all-in-one PC, aka a Chromebase, in 2014 but couldn’t compete with Windows and macOS rivals.

LG Chromebase 22CV241-W.
Enlarge / LG Chromebase 22CV241-W.

If LG does release a Chromebook, it will be interesting to see if it gets LG’s Gram branding. Currently, all of LG’s Gram laptops are thin-and-lights with Intel chips. The brand also makes a couple of AMD Ryzen-powered clamshells with LG Ultra PC branding. An LG Gram Chromebook would imply Intel chips.

Alternatively, LG could end the idea of its Gram laptops needing to be part of the Intel Evo certification program for ultrabooks and let the Chromebook stand on the names of LG and Chromebook alone—or even launch a new brand just for Chrome OS devices. LG’s AMD PCs start at an MSRP of $800, while the cheapest Gram-branded PC starts at $1,000.

An LG Chromebook would bring Google’s OS pretty close to ubiquity among all major US PC brands, though Razer, MSI, and Microsoft don’t sell Chromebooks.

Continue Reading

Gadgets

Employees pleaded with Facebook to stop letting politicians bend rules

Published

on

Enlarge / One hundred cardboard cutouts of Facebook founder and CEO Mark Zuckerberg stand outside the US Capitol in Washington, DC, April 10, 2018.

Saul Loeb | Getty Images

Facebook’s senior executives interfered to allow US politicians and celebrities to post whatever they wanted on its social network despite pleas from employees to stop, leaked internal documents suggest.

Employees claim in the documents that while Facebook has long insisted that it is politically neutral, it allowed rightwing figures to break rules designed to curb misinformation and harmful content, after being stung by accusations of bias from conservatives.

In September 2020, just ahead of the US presidential election, the author of an internal memo wrote that “director-level employees” had “written internally that they would prefer to formally exclude political considerations from the decision-making process.”

The author called for the company’s leadership to create a “firewall” around its content moderation teams to stop this from happening and to make sure Facebook did not keep up or take down posts because of external political and media pressure.

In another internal note, dated December 2020, an employee claimed that Facebook’s public policy team blocked decisions to take down posts “when they see that they could harm powerful political actors.”

“In multiple cases the final judgment about whether a prominent post violates a certain written policy are made by senior executives, sometimes Mark Zuckerberg,” the author added, referring to Facebook’s chief executive. Parts of the note were previously reported by BuzzFeed.

In a further example from 2019, Zuckerberg was alleged to have been personally involved in a decision to allow a video that made the false claim that abortion is “never medically necessary.”

The post, which had been taken down by a moderator, was reinstated following complaints by Republican politicians, the document said.

The documents, part of a wider cache dubbed the Facebook Papers, were disclosed to US regulators and provided to Congress in redacted form by the legal counsel of whistleblower Frances Haugen. A consortium of news organisations, including the Financial Times, has obtained the redacted versions received by Congress.

Facebook declined to respond to queries about the outcome of any discussions about separating its content team from the policy and communications teams.

Joe Osborne, a Facebook spokesperson, said: “At the heart of these stories is a premise which is false. Yes, we’re a business and we make profit, but the idea that we do so at the expense of people’s safety or wellbeing misunderstands where our own commercial interests lie. The truth is we’ve invested $13bn and have over 40,000 people to do one job: keep people safe on Facebook.”

Staff told to aim for ‘“unimpeachable neutrality”

A former Facebook executive told the FT that Zuckerberg had long told staff to aim for what he called “unimpeachable neutrality.”

This was important particularly around US political groups, employees were told, because the company did not want to be accused of breaking campaign rules by giving a donation in kind.

But three other former employees said they had observed how Facebook applied its own rules in an inconsistent and haphazard way, with special treatment for celebrities.

One former integrity team employee said: “For the people running Facebook, it seems like they care much more about not appearing biased than actually not being biased. Often their efforts at the former make the latter worse.”

Continue Reading

Trending