Lifeboat Foundation

SpaceX is targeting this weekend for its next Falcon 9 rocket launch from Kennedy Space Center, this time with another batch of Starlink internet satellites.

If schedules hold, teams will give the go-ahead for the 230-foot rocket to launch from pad 39A at 8:27 a.m. Sunday, the opening of an instantaneous window. It must launch at that time or delay to another day.

About eight minutes after liftoff, the rocket’s 162-foot first stage will target an autonomous landing on the Of Course I Still Love You drone ship in the Atlantic Ocean. SpaceX’s fleet of ships and the booster should return to Port Canaveral a few days later.

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.

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.

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

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” »

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

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.

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.

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 muscle is made up of bundles of contracting muscle fibers and each muscle fiber is surrounded by satellite cells —muscle stem cells that can produce new muscle fibers. Thanks to the work of these satellite 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 muscular dystrophy 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.