Lifeboat Foundation

Russia’s attacks on Ukraine continue to take lives and destroy infrastructure as the country invades. This infrastructure damage has disrupted internet access in Ukraine, leading a government official to publicly request Starlink satellite internet access for the country from SpaceX CEO Elon Musk. Musk obliged, activating Starlink service in Ukraine and sending additional hardware. But with continued attacks on infrastructure, how will Ukraine stay connected?

Fedorov brings up an important point: Even though Starlink operates without the need for traditional internet infrastructure, the Earth-bound hardware still needs power. And, as Russian attacks bombard the country, Ukraine’s internet access will continue to be threatened.

Fedorov’s statement publicly reached out for help acquiring generators to keep Starlink online for Ukrainians. But Musk responded with an alternative suggestion.

Continue reading “How will Ukraine keep SpaceX’s Starlink internet service online?” »

Engineers sometimes turn to nature for inspiration. Cold Spring Harbor Laboratory Associate Professor Saket Navlakha and research scientist Jonathan Suen have found that adjustment algorithms—the same feedback control process by which the Internet optimizes data traffic—are used by several natural systems to sense and stabilize behavior, including ant colonies, cells, and neurons.

Internet engineers route data around the world in small packets, which are analogous to ants. As Navlakha explains, “The goal of this work was to bring together ideas from machine learning and Internet design and relate them to the way ant colonies forage.”

The same algorithm used by internet engineers is used by ants when they forage for food. At first, the colony may send out a single ant. When the ant returns, it provides information about how much food it got and how long it took to get it. The colony would then send out two ants. If they return with food, the colony may send out three, then four, five, and so on. But if ten ants are sent out and most do not return, then the colony does not decrease the number it sends to nine. Instead, it cuts the number by a large amount, a multiple (say half) of what it sent before: only five ants. In other words, the number of ants slowly adds up when the signals are positive, but is cut dramatically lower when the information is negative. Navlakha and Suen note that the system works even if individual ants get lost and parallels a particular type of “additive-increase/multiplicative-decrease algorithm” used on the internet.

Rather than an open, ubiquitous Internet that is accessible to the entire planet, Facebook’s new vision is about immersive reality.

Airplanes use radio altimeters that work on a frequency that the industry claims is too close to the ones being used by 5G networks.

Governments need to ensure ubiquitous access to broadband Internet, and quality desktops and laptops, as well as tutoring programs.

SpaceX Starlink satellites twice approached the Chinese Space Station (CSS) in orbit, prompting China to warn of “close contacts” with Elon Musk’s space program.

Both the July 1 and October 21 incidents prompted the Chinese spacecraft to perform collision avoidance maneuvers. The Chinese team told the UN secretary-general in a diplomatic statement they provided earlier this month that on both occasions there were crew members on board, “which might represent a hazard to the lives or health of astronauts.”

Since its launch on April 29, the CSS “Tiangong” has maintained a nearly circular orbit at a height of around 390 kilometers with an orbital inclination of about 41.5 degrees.

Nikola Tesla’s vision of the world is about to become reality.

#engineering

Continue reading “Tesla Said It Was Possible, Now Wireless Electricity Is Finally Becoming Reality” »

Starlink promises high speed and low latency internet access.

On Saturday, CEO Elon Musk posted on his Twitter page that Starlink service is active in Ukraine, with more terminals en route. Previously, Mykhailo Fedorov, vice prime minister of Ukraine, had tweeted to Musk on Saturday, February 26, calling for the tech billionaire to provide some assistance to Ukraine amidst the Russian attack on the country.

Starlink is designed to help people in areas without access to reliable, ground-based internet get online — so long as they have a view of the sky. Starlink promises high-speed and low latency service without relying on expensive ground-based fiber optic cables or local infrastructure. Just point a dish at the sky, and the supplied hardware will connect to the internet using the satellites orbiting above.