Archive for the ‘space’ category: Page 2

Oct 7, 2019

Researchers develop quantum-mechanical variant of the twin paradox

Posted by in categories: particle physics, quantum physics, space

One of the fundamental challenges of physics is the reconciliation of Einstein’s theory of relativity and quantum mechanics. The necessity to critically question these two pillars of modern physics arises, for example, from extremely high-energy events in the cosmos, which so far can only ever be explained by one theory at a time, but not both theories in harmony. Researchers around the world are therefore searching for deviations from the laws of quantum mechanics and relativity that could open up insights into a new field of physics.

For a recent publication, scientists from Leibniz University Hannover and Ulm University have taken on the twin paradox known from Einstein’s special theory of relativity. This thought experiment revolves around a pair of twins: While one brother travels into space, the other remains on Earth. Consequently, for a certain period of time, the twins are moving in different orbits in space. The result when the pair meets again is quite astounding: The twin who has been travelling through space has aged much less than his brother who stayed at home. This phenomenon is explained by Einstein’s description of time dilation: Depending on the speed and where in the gravitational field two clocks move relative to each other, they tick at different speeds.

For the publication in Science Advances, the authors assumed a quantum-mechanical variant of the twin paradox with only one twin. Thanks to the superposition principle of , this twin can move along two paths at the same time. In the researchers’ , the twin is represented by an . “Such clocks use the quantum properties of atoms to measure time with high precision. The atomic clock itself is therefore a quantum-mechanical object and can move through space-time on two paths simultaneously due to the superposition principle. Together with colleagues from Hannover, we have investigated how this situation can be realised in an experiment,” explains Dr. Enno Giese, research assistant at the Institute of Quantum Physics in Ulm. To this end, the researchers have developed an experimental setup for this scenario on the basis of a quantum-physical model.

Oct 7, 2019

China grew a plant on the moon — it sprouted two leaves, data indicates

Posted by in category: space

It marks the first time a plant has been grown on the moon.

Oct 7, 2019

Lunar-polar Propellant Mining Outpost Envisioned

Posted by in categories: futurism, space

HUNTSVILLE, Alabama – Moon propellant mining outposts can grow into lunar cities. A futuristic architecture promises to greatly reduce the cost of human exploration and industrialization of Earth’s celestial next-door-neighbor.

Oct 6, 2019

China Grows Cotton Plant on the Far Side of the Moon in Biological First

Posted by in categories: bioengineering, biological, space

China has broken new lunar ground, successfully growing cotton on the moon for the first time. The experiment was part of the Chang’e 4 project, in which China is exploring the far side of the moon with a lander. This is the same lander that recently discovered a mysterious gel-like substance on the moon’s surface.

The cotton plant was one of several organisms encased in a mini biosphere weighing just 2.6 kilograms (5.7 lbs) with a pressure of 1 atmosphere which was aboard the lander. The organisms experienced an environment largely similar to that on Earth, however, they did have to contend with both space radiation and microgravity.

In an interview with engineering magazine IEEE Spectrum, project leader for the experiment Xie Gengxin explained more about the challenges of growing plants in the restricted environment. “The weight of the Chang’e-4 probe demanded that the weight [of the experiment] can’t exceed three kilograms,” he said. That’s why it was important to select the biological samples in the experiment carefully.

Oct 6, 2019

Meet the cyborg artists who have merged themselves with technology

Posted by in categories: cyborgs, space

Neil Harbisson has an antenna implanted in his skull that allows him to feel colour, while Moon Ribas has sensors in her feet that allow her to feel earthquakes.

Oct 5, 2019

Paralyzed man able to walk with mind-controlled exoskeleton suit

Posted by in categories: biotech/medical, cyborgs, space

He said it felt like being the first man to walk on the moon.

Oct 3, 2019

NASA just shared a fascinating soundtrack of a Mars quake

Posted by in category: space

NASA’s InSight lander has picked up on some interesting rumblings on Mars, and the space agency shared them Tuesday in a blog post.

The spacecraft is equipped with an incredibly sensitive seismometer called the Seismic Experiment for Interior Structure (SEIS), which is designed to listen for marsquakes. By examining how seismic waves move through the planet’s interior, scientists hope to learn more about Mars’ deep inner structure.

Continue reading “NASA just shared a fascinating soundtrack of a Mars quake” »

Oct 3, 2019

Asteroid fears: NASA’s last-ditch system in place for Earth impact ONE week away exposed

Posted by in category: space

A SCIENTIST revealed how NASA has a last-ditch system in place in the event a huge space rock is “due to impact Earth in one to three weeks” during a planet-saving warning.

Oct 3, 2019

First-Ever Image of the ‘Cosmic Web’ Reveals the Gassy Highway That Connects the Universe

Posted by in categories: space, transportation

A groundbreaking new image provides direct evidence of a ‘cosmic web’ of gas that links every galaxy in the universe.

Oct 3, 2019

What created this ‘ghost particle’ from space found on Earth?

Posted by in categories: particle physics, space

Last summer, scientists found a “ghost particle” in Antarctica. Now we know more about where it came from: a mysterious galaxy 3.8 billion light-years away.

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