An international group of astronomers discovered the planet using NASA’s Transiting Exoplanet Survey Satellite (TESS) earlier this year in the constellation Hydra, about 31 light-years from Earth, according to a statement by NASA. (One light-year is the distance light travels in a year, about 6 trillion miles, or 10 trillion kilometers.)
FAIRY-SIZED astronauts will become humanity’s weapon of choice when it comes to exploring the universe.
That’s the shock claim made by one expert, who reckons by the end of the century we’ll be creating tiny people with wings to travel to new worlds for us.
Dr Ian Pearson, a “futurologist” – someone who specialises in predicting future tech trends – says we’ll soon be able to genetically engineer folk of all shapes and sizes.
The sun is easy to spot in the sky, and it’s not very far away in astronomical terms. So, scientists have spent a great deal of time studying our local life-giving star. However, the sun is also a nuclear inferno that will eradicate any people and most robots that get too close. To study the star up close, researchers at the University of Wisconsin-Madison built a miniature sun. They call it the Big Red Ball (BRB), and it could help us understand some fundamental solar processes.
Like most main sequence stars, the sun is a giant ball of hydrogen massive enough to sustain a nuclear fusion reaction. The hydrogen fuses into helium, and helium eventually fuses into heavier elements as stars exhaust their fuel. The sun still has plenty of life left, so it’s mostly hydrogen with about one-quarter helium.
The BRB uses helium to create analogous conditions to those on the sun, but without all that pesky nuclear fusion. As experiments have shown, it’s extremely difficult to maintain nuclear fusion on Earth. The BRB is a hollow sphere almost ten feet (three meters) in diameter. The team filled that space with helium gas (which again is a major component of the sun) and ionized it with microwave heating to form a sun-like plasma. Powerful magnets confine the plasma, and an electrical current causes the miniature sun to spin a bit like the real one.
We study the condensation of closed string tachyons as a time-dependent process. In particular, we study tachyons whose wave functions are either space-filling or localized in a compact space, and whose masses are small in string units; our analysis is otherwise general and does not depend on any specific model. Using world-sheet methods, we calculate the equations of motion for the coupled tachyon-dilaton system, and show that the tachyon follows geodesic motion with respect to the Zamolodchikov metric, subject to a force proportional to its beta function and friction proportional to the time derivative of the dilaton.
Jez Turner does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.
Posted in robotics/AI, space
The spinning ball of plasma that is our Sun produces a spinning magnetic field too, and where that magnetic field weakens, solar winds can escape.
Now scientists have been able to recreate those same effects in a lab for the first time, meaning we can study the bizarre science around our star at close quarters, without a trip across the Solar System.
Knowing how this magnetic field and its associated plasma flows behave is crucial in improving our understanding of how and when solar storms might impact Earth, and potentially put our communications systems and infrastructure under severe strain.
Stand by to start space mining – not on an asteroid, but aboard the International Space Station (ISS). Delivered to the station by an unmanned Dragon cargo ship on July 27, an experimental mining kit developed by a team led by the University of Edinburgh will use bacteria to study how microorganisms can be used to extract minerals and metals from rocks on asteroids, moons, and planets.
NASA is hyper focused on sending humans to the lunar surface by 2024, and those astronauts are going to need space suits to pull off the job — suits that the space agency currently doesn’t have. Now one company, with decades of experience making space suits for NASA, says it has an ensemble that could be ready by the agency’s ambitious deadline.
