Lifeboat Foundation: Safeguarding Humanity
Toggle light / dark theme

Blog – Page 7015

A new type of rocket thruster that could take humankind to Mars and beyond has been proposed by a physicist at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL).

The device would apply magnetic fields to cause particles of plasma (link is external), electrically charged gas also known as the fourth state of matter, to shoot out the back of a rocket and, because of the conservation of momentum, propel the craft forward. Current space-proven plasma thrusters use electric fields to propel the particles.

The new concept would accelerate the particles using magnetic reconnection, a process found throughout the universe, including the surface of the sun, in which magnetic field lines converge, suddenly separate, and then join together again, producing lots of energy. Reconnection also occurs inside doughnut-shaped fusion (link is external) devices known as tokamaks (link is external).

Read more | >

A team of researchers with members from institutions in the U.S., Sweden and Taiwan has developed an artificial intelligence system for predicting breast cancer years before tumors appear. In their paper published in the journal Science Translational Medicine, the group describes how they developed and trained their system and how well it worked when tested.

Read more | >

If the U.S. and China ever come to blows, this vessel will play a big part in the battle.

The U.S. Marine Corps is taking a completely new tack to providing fire support during amphibious landings: unmanned boats stocked full of suicide drones.

The shipbuilder Metal Shark has announced it’s building a new type of unmanned surface vessel, which the Marines plan to equip with loitering munitions. Such a boat would act as a mobile fire support platform, servicing calls for fire with salvos of drones equipped with explosive charges.

Continue reading “The Marines Are Loading This Mean-Looking Boat With Kamikaze Drones” | >

BASE opens up new possibilities in the search for cold dark matter.

The Baryon Antibaryon Symmetry Experiment (BASE) at CERN’s Antimatter Factory has set new limits on how easily axion-like particles in a narrow mass range around 2.97 neV can turn into photons, the particles of light. BASE’s new result, published by Physical Review Letters, describes this pioneering method and opens up new experimental possibilities in the search for cold dark matter.

Axions, or axion-like particles, are candidates for cold dark matter. From astrophysical observations, we believe that around 27% of the matter-energy content of the universe is made up of dark matter. These unknown particles feel the force of gravity, but they barely respond to the other fundamental forces, if they experience them at all. The best accepted theory of fundamental forces and particles, called the Standard Model of particle physics, does not contain any particles that have the right properties to be cold dark matter.

Since the Standard Model leaves many questions unanswered, physicists have proposed theories that go beyond it, some of which explain the nature of dark matter. Among such theories are those that suggest the existence of axions or axion-like particles. These theories need to be tested, and many experiments have been set up around the world to look for these particles, including at CERN. For the first time, BASE has turned the tools developed to detect single antiprotons, the antimatter equivalent of a proton, to the search for dark matter. This is especially significant as BASE was not designed for such studies.

Continue reading “BASE Antimatter Experiment opens up new possibilities in the search for cold dark matter” | >