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Archive for the ‘satellites’ category: Page 3

Oct 16, 2020

The Pentagon Wants Elon Musk to Yeet Cargo Around the Planet In an Hour

Posted by in categories: Elon Musk, military, robotics/AI, satellites

Ogba Educational Clinic championing STEM Education and Artificial Intelligence in Africa.


Officials said SpaceX is working on rocket-based delivery of military supplies around the globe just days after the news that it’s developing missile-tracking satellites.

Continue reading “The Pentagon Wants Elon Musk to Yeet Cargo Around the Planet In an Hour” »

Oct 15, 2020

Two Dead Satellites May Collide Tonight. That’s Really, Really Bad

Posted by in category: satellites

Experts are worried about what could happen up in low-Earth orbit.


On Tuesday, LeoLabs, a company that monitors the paths of space junk in low-Earth orbit, announced on Twitter it was tracking a potential conjunction—that’s space-speak for a mid-orbit crash—tonight between a defunct Soviet satellite and a discarded Chinese rocket stage.

Oct 15, 2020

SpaceX hopes to launch two batches of Starlink satellites from Florida in one week

Posted by in categories: Elon Musk, internet, satellites

Elon Musk is looking to get caught up after several weeks marked by delays.

Oct 15, 2020

Australlite: There have been lots of posts about SpaceX StarLink starting services in Australia

Posted by in categories: education, food, government, health, internet, satellites, security

In 2016, I proposed LEO HTS Mega Constellation a viable solution for Australia’s broadband national coverage. I have been doing research on these constellations right from the beginning and they are inevitable!


Introduction

Utilizing the announced Lower Earth Orbit (LEO) satellites constellations of OneWeb, SpaceX, LeoSat & Samsung to provide high speed connectivity to entire Australian continent with performance better than fiber networks. This project can eliminate high cost NBN roll out to scattered populations and will considerably improve disaster management. Providing high speed connectivity for mobile communication, internet, high resolution TV broadcast as well as utilizing technologies like IoT & Cloud for improvement in security, education, health, agriculture, livestock farming, mineral resources, wildlife, and environment without any coverage black-spots. This network will not require any infrastructure installations and will help the Government to generate revenues by issuing spectrum licenses to local as well as foreign investors for providing services directly to the end user.

Continue reading “Australlite: There have been lots of posts about SpaceX StarLink starting services in Australia” »

Oct 14, 2020

SpaceX gets FCC approval to bid in $16 billion rural-broadband auction

Posted by in categories: internet, satellites

Nearly 400 ISPs qualify for auction, with SpaceX as the only LEO satellite ISP.

Oct 13, 2020

Space is becoming too crowded, Rocket Lab CEO warns

Posted by in categories: internet, satellites

In 1978, NASA scientist Donald Kessler warned of a potential catastrophic, cascading chain reaction in outer space. Today known as “Kessler Syndrome,” the theory posited that space above Earth could one day become so crowded, so polluted with both active satellites and the detritus of space explorations past, that it could render future space endeavors more difficult, if not impossible.

Last week, the CEO of Rocket Lab, a launch startup, said the company is already beginning to experience the effect of growing congestion in outer space.

Rocket Lab CEO Peter Beck said that the sheer number of objects in space right now — a number that is growing quickly thanks in part to SpaceX’s satellite internet constellation, Starlink — is making it more difficult to find a clear path for rockets to launch new satellites.

Continue reading “Space is becoming too crowded, Rocket Lab CEO warns” »

Oct 13, 2020

SpaceX’s Satellite Internet Service Latency Comes in Under 20 Milliseconds

Posted by in categories: internet, satellites

SpaceX disclosed the benchmarks in a presentation the company sent to the FCC last Friday. It also revealed the public beta for Starlink is coming to multiple US states.

Oct 13, 2020

Damaged muscles don’t just die, they regenerate themselves

Posted by in categories: biotech/medical, satellites

A research collaboration between Kumamoto University and Nagasaki University in Japan has found that components leaking from broken muscle fibers activate “satellite” muscle stem cells. While attempting to identify the proteins that activate satellite cells, they found that metabolic enzymes, such as GAPDH, rapidly activated dormant satellite cells and accelerated muscle injury regeneration. This is a highly rational and efficient regeneration mechanism in which the damaged muscle itself activates the satellite cells that begin the regeneration process.

Skeletal is made up of bundles of contracting muscle fibers and each is surrounded by —muscle stem cells that can produce new muscle fibers. Thanks to the work of these cells, muscle fibers can be regenerated even after being bruised or torn during intense exercise. Satellite cells also play essential roles in muscle growth during developmental stages and muscle hypertrophy during strength training. However, in refractory muscle diseases like and age-related muscular fragility (sarcopenia), the number and function of satellite cells decreases. It is therefore important to understand the regulatory mechanism of satellite cells in muscle regeneration therapy.

In mature skeletal muscle, satellite cells are usually present in a dormant state. Upon stimulation after muscle injury, satellite cells are rapidly activated and proliferate repeatedly. During the subsequent myogenesis, they differentiate and regenerate muscle fibers by fusing with existing muscle fibers or with together. Of these three steps (satellite cell activation, proliferation, and muscle differentiation), little is known about how the first step, activation, is induced.

Oct 13, 2020

Challenges for LEO HTS Megaconstelllations: Terrestrial Networks Integration

Posted by in categories: government, internet, satellites

Satellite communication has been serving the terrestrial network as a complementor rather than a competitor for a considerable time. The best use-case scenario is the cellular backhaul over VSAT (Very Small Aperture Terminal) to connect remotely installed BTS (Base Transceiver Station) of a cellular network through a geostationary satellite to the respective BSC (Base Station Controller) and ultimately the core network. This technology enabled MNOs (Mobile Network Operators) to increase their subscribers base in remote communities which could not be connected to their network grid through Microwave or Fibre transmission. Similar network architecture, commonly known as bent-pipe and FSS (Fixed Satellite Service), has been used by other networks requirements of ISP (Internet Service Providers), Government, Corporate, Oil & Gas, Mining sectors, where the DCE (Data Communication Equipment) and DTE (Data Terminal Equipment) are replaced from BTS and BSC to networking switches and routers.

However, all these communications are struggling to keep at par with development at terrestrial networks, and the main reason is staggering latency of around 530 milliseconds for a roundtrip of a message through the satellites at an altitude of around 37,000 kilometres, which is a big challenge for Industry 4.0 technologies. The arrival of the planned NGSO mega constellation appears to address the problem through claimed significantly lower latency of around 4 milliseconds, which is at par with fibre optics.

The integration of the networks of mega constellations with those on the ground is a complicated situation with multiple dynamics to analyse. Let us have a brief look at 4G LTE and 5G NR technology and analyse the integration for both backhaul and fronthaul interfaces through NGSO satellites with the core networks.

Continue reading “Challenges for LEO HTS Megaconstelllations: Terrestrial Networks Integration” »

Oct 12, 2020

Elon Musk’s Starlink Space Internet Is Ready For Public Use

Posted by in categories: Elon Musk, internet, satellites

Elon Musk, the CEO of SpaceX, has announced that his space internet project is ready for public use. The statement comes after SpaceX launched 60 Starlink satellites into low-Earth orbit last week, bringing the total number to almost 800.

Eventually, SpaceX plans to launch tens of thousands of Starlink satellites to create a blanket around the Earth capable of beaming high-speed broadband internet to 99% of the inhabited world.

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