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Archive for the ‘space’ category: Page 28

Jul 3, 2024

NASA Astronauts Send Fourth of July Wishes From the International Space Station

Posted by in categories: robotics/AI, space

NASA astronauts Mike Barratt, Matt Dominick, Tracy C. Dyson, Jeanette Epps, Butch Wilmore, and Suni Williams share a Fourth of July message and extend their best wishes to those back on Earth in a video recorded on June 28, 2024.

The crew members are currently living and working aboard the International Space Station. Their missions aim to advance scientific knowledge and test new technologies for future human and robotic missions to the Moon and Mars, including NASA’s Artemis lunar missions.

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Jul 3, 2024

Quantum Vortex Mystery: Unveiling the Twisted Roots of Neutron Stars’ Puzzling Pulses

Posted by in categories: quantum physics, space

A recent study has unveiled the origins of the mysterious “heartbeats” observed in neutron stars, relating them to glitches caused by the dynamics of superfluid vortices.

Researchers found that these glitches follow a power-law distribution similar to other complex systems and developed a model based on quantum vortex networks that aligns with observed data without extra tuning.

Discovering Neutron Stars’ Heartbeats

Jul 3, 2024

Extremely Large Telescope: World’s Largest Telescope Mirror Will Bring the Stars Closer to Earth

Posted by in categories: innovation, space

Set for completion this decade, the Extremely Large Telescope in Chile will be the largest telescope globally, with a main mirror spanning 39 meters and made from 798 precision-engineered segments. It represents a significant international effort in astronomy.

Currently under construction in the Chilean Atacama Desert, the European Southern Observatory’s Extremely Large Telescope (ESO ’s ELT) is one step closer to completion. German company SCHOTT has successfully delivered the blank for the last of the 949 segments commissioned for the telescope’s primary mirror (M1). With a diameter of more than 39 meters, M1 will be by far the largest mirror ever made for a telescope.

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Jul 3, 2024

The Whole Surface of This Hellish Moon Is Covered in Lakes of Lava

Posted by in categories: physics, space

As bristling with volcanoes as a porcupine with quills, Jupiter’s moon Io is the most volcanically active world in the Solar System. At any given time, around 150 of the 400 or so active volcanoes on Io are erupting. It’s constantly spewing out lava and gas; a veritable factory of volcanic excretions.

And, thanks to the Juno probe’s Jovian Infrared Auroral Mapper (JIRAM) imaging Jupiter and its surrounding environment, we now know a lot more about what a gloriously hot mess Io is.

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Jul 3, 2024

Compactification, Vacuum Energy and Quintessence

Posted by in categories: energy, space

We study the possibility that the vacuum energydensity of scalar and internal-space gauge fieldsarising from the process of dimensional reduction ofhigher dimensional gravity theories plays the role of quintessence. We show that, for themultidimensional Einstein-Yang-Mills system compactifiedon a R × S3 × Sdtopology, there are classically stable solutions suchthat the observed accelerated expansion of the Universe atpresent can be accounted for without upsetting structureformation scenarios or violating observational bounds onthe vacuum energy density.

Jul 3, 2024

Physicists’ laser experiment excites atom’s nucleus, may enable new type of atomic clock

Posted by in categories: particle physics, space

For nearly 50 years, physicists have dreamed of the secrets they could unlock by raising the energy state of an atom’s nucleus using a laser. The achievement would allow today’s atomic clocks to be replaced with a nuclear clock that would be the most accurate clock to ever exist, allowing advances like deep space navigation and communication. It would also allow scientists to measure precisely whether the fundamental constants of nature are, in fact, really constant or merely appear to be because we have not yet measured them precisely enough.

Now, an effort led by Eric Hudson, professor of physics and astronomy at UCLA, has accomplished the seemingly impossible. By embedding a thorium atom within a highly transparent crystal and bombarding it with lasers, Hudson’s group has succeeded in getting the nucleus of the thorium atom to absorb and emit photons like electrons in an atom do. The astonishing feat is described in a paper published in the journal Physical Review Letters.

This means that measurements of time, gravity and other fields that are currently performed using atomic electrons can be made with orders of magnitude higher accuracy. The reason is that atomic electrons are influenced by many factors in their environment, which affects how they absorb and emit photons and limits their accuracy. Neutrons and protons, on the other hand, are bound and highly concentrated within the nucleus and experience less environmental disturbance.

Jul 3, 2024

Scientists discover way to ‘grow’ sub-nanometer sized transistors

Posted by in categories: computing, nanotechnology, quantum physics, space

A research team led by Director Jo Moon-Ho of the Center for Van der Waals Quantum Solids within the Institute for Basic Science (IBS) has implemented a novel method to achieve epitaxial growth of 1D metallic materials with a width of less than 1 nm. The group applied this process to develop a new structure for 2D semiconductor logic circuits. Notably, they used the 1D metals as a gate electrode of the ultra-miniaturized transistor.

This research appears in Nature Nanotechnology.

Integrated devices based on two-dimensional (2D) semiconductors, which exhibit excellent properties even at the ultimate limit of material thickness down to the atomic scale, are a major focus of basic and applied research worldwide. However, realizing such ultra-miniaturized transistor devices that can control the electron movement within a few nanometers, let alone developing the manufacturing process for these integrated circuits, has been met with significant technical challenges.

Jul 3, 2024

Researchers discover way to ‘grow’ sub-nanometer sized transistors

Posted by in categories: computing, nanotechnology, quantum physics, space

A research team led by Director JO Moon-Ho of the Center for Van der Waals Quantum Solids within the Institute for Basic Science (IBS) has implemented a novel method to achieve epitaxial growth of 1D metallic materials with a width of less than 1 nanometer (nm). The group applied this process to develop a new structure for 2D semiconductor logic circuits. Notably, they used the 1D metals as a gate electrode of the ultra-miniaturized transistor.

This research was published in the journal Nature Nanotechnology (“Integrated 1D epitaxial mirror twin boundaries for ultra-scaled 2D MoS 2 field-effect transistors”).

Integrated devices based on two-dimensional (2D) semiconductors, which exhibit excellent properties even at the ultimate limit of material thickness down to the atomic scale, are a major focus of basic and applied research worldwide. However, realizing such ultra-miniaturized transistor devices that can control the electron movement within a few nanometers, let alone developing the manufacturing process for these integrated circuits, has been met with significant technical challenges.

Jul 3, 2024

CNC Dialogues — Georg Northoff & Aldrich Chan: Space, Time, Self & Consciousness

Posted by in categories: physics, space

Dr. Georg Northoff is a neuroscientist, psychiatrist, and philosopher holding doctorates in all three disciplines. In this episode, we begin by discussing the self, and consciousness. We then enter into a dialogue about what he terms the world-brain problem, in contrast to the mind-body problem. He shares what he means by the neuroecological approach, why space and time are central to understanding the mind, and how it has foundational implications to diagnosis, treatment and research. We then talk about the practical implications of his viewpoint, for laymen and professionals alike. We follow by pivoting to cover topics such as the importance of philosophy in science, his stance on free will, and a series of rapid fire bonus questions that you don’t want to miss out on. We end on a review of his journey into becoming an MD, Ph.D, his future projects and words of wisdom for anyone listening. I invite you to skip around if you find any of these topics of particular interest to you.

Website: drchancnc.com.
Instagram: @draldrichan.
Guest website: http://www.georgnorthoff.com/

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Jul 2, 2024

Pioneer Plant for Potential Future Mars Settlement

Posted by in categories: food, space

The study notes, “Our study shows that the environmental resilience of S. caninervis is superior to that of some of highly stress-tolerant microorganisms and tardigrades.”


What plants would be most suitable for a future Mars settlement? This is what a recent study published in The Innovation hopes to address as a team of researchers from the Chinese Academy of Sciences investigated how the desert moss known as Syntrichia caninervis (S. caninervis) can survive extremely harsh conditions, specifically conditions on the planet Mars. This study holds the potential to help researchers, engineers, and future Mars astronauts better understand the types of plants they can grow, and even eat, while living on the Red Planet.

For the study, the researchers subjected S. caninervis to a series of brutal tests, including severe dryness, freezing temperatures, and large doses of gamma radiation, all of which are the environmental conditions on Mars and far harsher than humans and plants can manage. However, the researchers discovered that S. caninervis was able to recover 98 percent of its water loss within seconds after being severely dried out. The moss also achieved full recovery after being subjected to-80 degrees Celsius-112 degrees Fahrenheit) for 3 to 5 years along with-196 degrees Celsius (−320 degrees Fahrenheit) for 15 to 30 days.

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