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Category: space

Experiment challenges hypothesis of cell-like membranes on Titan

New experimental results have cast doubt on earlier proposals suggesting that spherical, cell-like membranes could form in the methane lakes of Saturn’s largest moon. Through results published in Science Advances, Tuan Vu and Robert Hodyss at NASA’s Jet Propulsion Laboratory suggest that exobiologists will likely need to explore alternative routes when considering the possibility of life on Titan.

Despite frigid surface temperatures of around −180 °C during the day, Titan is widely considered to be one of the most Earth-like bodies in the solar system. With a dense atmosphere composed mostly of nitrogen, its surface hosts lakes and seas of liquid methane and ethane, which flow, evaporate, and fall as rain in much the same way as water does on Earth.

For decades, this striking similarity to our own water cycle has inspired exobiologists to consider whether exotic forms of life could have evolved under these conditions. In 2015, researchers at Cornell University took this idea a step further through molecular-dynamics simulations designed to recreate Titan’s environment.

Discrete time crystal acts as a usable sensor for weak magnetic oscillations

The bizarre properties of discrete time crystals could be harnessed to detect extremely subtle oscillations of magnetic fields, physicists in the US and Germany have revealed. Publishing their results in Nature Physics, a team led by Ashok Ajoy at the University of California, Berkeley, show for the first time that these exotic materials could have practical uses far beyond their current status as an impractical curiosity.

Discrete time crystals (DTCs) are an exotic phase of matter which break entirely from the rules which apply to classical materials. Whereas an ordinary crystal is made up of atomic or molecular patterns that repeat at regular intervals in space, DTCs have structures that constantly oscillate in repeating cycles when driven by an external protocol, without ever reaching thermal equilibrium.

“Since their initial experimental demonstrations in 2017, there has been enormous excitement surrounding these states,” explains co-author Paul Schindler at the Max Planck Institute of Complex Systems. “Yet a persistent question has remained unanswered: can this exotic order be harnessed for practical applications?”

Ben Goertzel responds

As part of Future Day 2026, we hosted a conversation between two of the most provocative minds in AGI – Ben Goertzel and Hugo de Garis (with Adam Ford as moderator/provocateur) – to tackle the ultimate existential question: Is an Artilect War inevitable, and should humanity accept becoming the “number two” species?

The discussion will build upon last years discussion between Ben and Hugo on AGI and the Singularity.

It will explore the idea of human transcendence. If we can’t beat them, do we join them?

Will humanity transcend into a Jupiter brain quectotech utility fog?

Is the Artilect War the inevitable conclusion of biological intelligence? Or can we find a path toward existing in a universe that still finds us aesthetically pleasing?

0:00 Intro.

Continue reading “Ben Goertzel responds” | >

A clear roadmap for engineering combs of light

Optical frequency combs—laser sources that emit evenly spaced colors of light—are foundational, ubiquitous tools for precision measurement, found in optical clocks, gas-sensing spectrometers, and instruments that detect the light signatures of exoplanets. Traditionally, frequency combs are produced by large, fiber-laser systems ranging from the size of a shoebox to a refrigerator.

Engineers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) are at the forefront of shrinking these powerful laser sources onto photonic chips to make “microcombs” at millimeter to micron scales, useful not only for their smaller size, but in next-generation telecommunications applications, such as generating multiple data carriers over a single optical fiber.

New research led by Marko Lončar, the Tiantsai Lin Professor of Electrical Engineering and Applied Physics, describes a new, generalized model for how to design so-called resonant electro-optic microcombs on thin-film lithium niobate, a material featuring a strong electro-optic effect, or the ability to efficiently mix electronic signals with optical ones.

Not just spin—electron orbitals can provide new method for controlling magnetism

Research is actively underway to develop a “dream memory” that can reduce heat generation in smartphones and laptops while delivering faster performance and lower power consumption. Korean researchers propose a new possibility for controlling magnetism using the exchange interaction of electron orbitals—the motion of electrons orbiting around an atomic nucleus—rather than relying on the conventional exchange interaction of electron spin, the rotational property of electrons inside semiconductors.

A joint research team led by Professor Kyung-Jin Lee of the Department of Physics at KAIST and Professor Kyoung-Whan Kim of the Department of Physics at Yonsei University has established, for the first time in the world, a new theoretical framework enabling magnetism to be freely controlled through orbital exchange interaction, surpassing the limitations of conventional technologies that control magnetism using electric currents. The study is published in the journal Nature Communications.

Until now, next-generation memory research has mainly focused on the spin of electrons. Spin refers to the property of electrons that rotate on their own axis like tiny spinning tops, and information can be stored by using the direction of this rotation. However, electrons simultaneously move around the atomic nucleus along paths known as orbitals.

New microscope offers sharper view into momentum space

Electrons are tiny and constantly in motion. How they behave in a crystal lattice determines key material properties: electrical conductivity, magnetism, or novel quantum effects. Anyone aiming to develop the information technologies of tomorrow must understand what electrons do. At Forschungszentrum Jülich, a new tool is now available for this purpose: a momentum microscope that was fully developed and built on site. “Internationally, we are currently seeing rapidly growing interest in this method,” explains Dr. Christian Tusche from Forschungszentrum Jülich.

Dr. Christian Tusche already played a key role in advancing momentum microscopy during his time at the Max Planck Institute of Microstructure Physics in Halle. Since moving to Jülich in 2015, he has continued to drive its development forward. His work has been recognized with several awards, including the Kai Siegbahn Prize in 2018 and the Innovation Award on Synchrotron Radiation in 2016. Most recently, he published a review article on the method in the journal Applied Physics Letters.

In recent years, numerous instruments have been commissioned at synchrotron facilities and X-ray lasers around the world. “The new device we built together with the Mechanical Workshop is a real innovation. There is currently nothing like it available from any specialist company,” says Dr. Tusche.

Key transistor for next-generation 3D stacked semiconductors operates without current leakage

A research team led by Professor Jae Eun Jang and Dr. Goeun Pyo from the Department of Electrical Engineering and Computer Science at DGIST has developed “dual-modulated vertically stacked transistors” that operate stably without current leakage even in two-dimensional nanoscale channel structures. A study on this work is published in the journal Advanced Science.

In recent years, the semiconductor industry has faced physical limitations as the demand to integrate more devices within limited space continues to grow. To overcome these constraints, “vertically stacked transistors,” in which current-carrying channels are vertically layered, have emerged as a promising alternative for next-generation 3D semiconductors. However, conventional vertically stacked transistors suffer from a critical drawback in which gate electric signals are not delivered uniformly into the channel interior due to their electrode structure, consequently leading to current leakage or unstable device operation as the channel length becomes shorter.

To address this issue, the research team proposed a “dual-modulation structure” in which two gates—positioned above and below—control the channel through different mechanisms. This represents an innovative approach in which current flows in a sandwich-like configuration, with the upper and lower electrodes facing each other across the channel.

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