Double Helix: Tempest

The adventure begins in the year 2256. Mars has been terraformed into a tropical paradise where there is peace, beauty, and the colonists have finally completed their first interstellar spaceship. Although life is good, a genetic bottleneck and genetic mutations have plagued the Mars colonists for more than two hundred years, leaving the population with 95% female inhabitants and men who are born sterile. Chancellor Janna sends her only daughter…

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An Up-Close Look at the Notorious APT32 Hacking Group in Action

An Up-Close Look at the Notorious APT32 Hacking Group in Action

Cybersecurity company Cybereason has shared new details about how one of the world’s most mysterious hacking groups operates. The post An Up-Close Look at the Notorious APT32 Hacking Group in Action appeared first on WIRED.

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We Have More Details on the Outermost Trappist-1 Planet!

A new study by an international team of researchers has revealed information about the surface conditions on TRAPPIST-1’s outermost planet.
The post We Have More Details on the Outermost Trappist-1 Planet! appeared first on Universe Today. …

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Fully guided-wave photon pair source for quantum applications

We report a fully guided-wave source of polarisation entangled photons based on a periodically poled lithium niobate waveguide mounted in a Sagnac interferometer. We demonstrate the source’s quality by converting polarisation entanglement to postselection-free energy-time entanglement for which we obtain a near-optimal S -parameter of 2.75 ± 0.02, i.e. a violation of the Bell inequality by more than 35 standard deviations. The exclusive use of guided-wave components makes our source compact and stable which is a prerequisite for increasingly complex quantum applications. Additionally, our source offers a great versatility in terms of photon pair emission spectrum and generated quantum state, making it suitable for a broad range of quantum applications such as cryptography and metrology. In this sense, we show how to use our source for chromatic dispersion measurements in optical fibres which opens new avenues in the field of quantum metrology. …

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Generating higher-order quantum dissipation from lower-order parametric processes

The stabilisation of quantum manifolds is at the heart of error-protected quantum information storage and manipulation. Nonlinear driven-dissipative processes achieve such stabilisation in a hardware efficient manner. Josephson circuits with parametric pump drives implement these nonlinear interactions. In this article, we propose a scheme to engineer a four-photon drive and dissipation on a harmonic oscillator by cascading experimentally demonstrated two-photon processes. This would stabilise a four-dimensional degenerate manifold in a superconducting resonator. We analyse the performance of the scheme using numerical simulations of a realisable system with experimentally achievable parameters. …

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Think Before You Tweet In the Wake of an Attack

Think Before You Tweet In the Wake of an Attack

Terrorists use social media to recruit, but they also depend on you and the media to use it to amplify their message. The post Think Before You Tweet In the Wake of an Attack appeared first on WIRED.

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Here’s How We Can Detect Plants on Extrasolar Planets

In a presentation at Breakthrough Discuss, astrophysicist Dr. Berdyugina explained how methods used to study stars could be used to determine the presence of plants on other planets.
The post Here’s How We Can Detect Plants on Extrasolar Planets appeared first on Universe Today. …

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Do Gravitational Waves Permanently Alter the Nature of Spacetime?

A new study by a team of researchers from Monash University argues that gravitational waves may permanently alter the fabric of spacetime.
The post Do Gravitational Waves Permanently Alter the Nature of Spacetime? appeared first on Universe Today. …

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The Silk Road Creator’s Life Sentence Actually Boosted Dark Web Drug Sales

The Silk Road Creator’s Life Sentence Actually Boosted Dark Web Drug Sales

A new study raises questions about the deterrence value of harsh sentencing for dark web crimes. The post The Silk Road Creator’s Life Sentence Actually Boosted Dark Web Drug Sales appeared first on WIRED.

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The Thoughts of a Spiderweb

Spiders appear to offload cognitive tasks to their webs, making them one of a number of species with a mind that isn’t fully confined within the head. …

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HI content of isolated UDGs (Papastergis et al.)

Vol. 601
In section 1. Letters

The HI content of isolated ultra-diffuse galaxies: A sign of multiple formation mechanisms?

by E Papastergis, E.A.K. Adams, and A.J. Romanowsky A&A 601, L10

alt

Ultra-diffuse galaxies (UDG) are distinctive because of their extremely low surface density of stars, with respect to the mass and size of their dark matter halo. The latter are derived from their relatively large rotational velocity, and large size. UDG are very abundant in galaxy clusters, and one of the best scenarios is that they have been stripped of their gas by the cluster environment, which stopped their star formation. In isolation, they could be quenched by starburst-driven outflows.
The present article reports of 21cm observations of the HI component in four isolated UDG, leading to three upper limits and one detection. Combining with the literature, this means six field UDG have been observed, with three upper limits. The observed dichotomy in the gaseous properties of field UDGs is interpreted as a sign of the existence of multiple mechanisms for their formation, with the formation of the quiescent gas-poor UDGs remaining a mystery.

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Two Veteran NASA Astronauts Michael Foale and Ellen Ochoa Inducted into U.S. Astronaut Hall of Fame at KSC

KENNEDY SPACE CENTER VISITOR COMPLEX, FL – In a moving ceremony, a pair of veteran NASA astronauts – Michael Foale and Ellen Ochoa – who once flew together on a space shuttle mission, were inducted into the U. S. Astronaut Hall of Fame at the Kennedy Space Center Visitor Complex, Florida, on May 19.
The post Two Veteran NASA Astronauts Michael Foale and Ellen Ochoa Inducted into U.S. Astronaut Hall of Fame at KSC appeared first on Universe Today. …

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The Mars Project! Von Braun’s Ideas for a Mars Mission. Collaboration with Vintage Space

In a special two part episode, Fraser collaborates with space historian Amy Shira Teitel at Vintage Space to investigate what spaceflight advances could have happened. Amy looks at the lost Apollo Missions, while Fraser talks about Werner Von Braun’s “Mars Project”.
The post The Mars Project! Von Braun’s Ideas for a Mars Mission. Collaboration with Vintage Space appeared first on Universe Today. …

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Messier 43 – the De Marian’s Nebula

Located in the direction of the Orion constellation, roughly 1600 light-years from Earth, is the diffuse nebula known as the De Marian’s Nebula
The post Messier 43 – the De Marian’s Nebula appeared first on Universe Today. …

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Magnetic order in a two-dimensional molecular chessboard

Achieving magnetic order in low-dimensional systems consisting of only one or two dimensions has been a research goal for some time. Researchers now show that magnetic order can be created in a two-dimensional chessboard lattice consisting of organometallic molecules that are only one atomic layer thick.

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Vibrational assisted conduction in a molecular wire

We present a detailed study of the conduction properties of a molecular wire where hopping processes between electronic sites are coupled to a vibrational mode of the molecule. The latter is sandwiched between two electronic leads at finite temperatures. We show that the electro-mechanical coupling can lead to a strong enhancement of the lead-to-lead conduction. Moreover, under suitable driving of the molecular vibrational mode, the device can act as a transistor passing sharply from enhanced conduction to short-circuit configuration. …

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Digital Society Boosted by Stunning SpaceX Launch Delivering Inmarsat Mobile Broadband Satellite to Orbit – Photo/Video Gallery

KENNEDY SPACE CENTER, FL – The worlds emerging ‘Digital Society’ gained a big boost following SpaceX’s stunningly beautiful twilight launch of a Falcon 9 that successfully delivered the huge 6.7 ton mobile Inmarsat-5 F4 broadband satellite to orbit for London-based Inmarsat on Monday, May 15.
The post Digital Society Boosted by Stunning SpaceX Launch Delivering Inmarsat Mobile Broadband Satellite to Orbit – Photo/Video Gallery appeared first on Universe Today. …

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Are There Dark Matter Galaxies? ft. Sarah Pearson from Space with Sarah

We know there’s dark matter, and there are galaxies, but are there galaxies entirely made up of dark matter? Astronomer Sarah Pearson joins Fraser to talk about what’s out there.
The post Are There Dark Matter Galaxies? ft. Sarah Pearson from Space with Sarah appeared first on Universe Today. …

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