Physical Sciences

Abstract: An energy threshold alone does not establish a civilization’s ability to persist. Building on two Galaxies studies of Type I and Type II development, we propose additional qualifications based on stewardship, autonomous habitation, and resilience to loss of the original home world or star. Type I couples planetary energy capability with maintenance of a habitable Earth; Type II adds a self-sustaining Solar System network; Type III combines Galactic energy capability and transport with communities able to continue beyond the Sun. These qualifications complement the conventional power scale. A finite-speed expansion model couples access to stellar luminosity with gradual local construction and conditional continuity. In a stipulated exponential disk, the conventional 10³⁶ W threshold is crossed approximately 0.68, 6.7, or 67 million years after expansion begins; reaching the entire modeled disk takes 2.28, 22.8, or 228 million years. Neither result establishes autonomous habitation or stewardship, and neither is a forecast. Sufficient usable luminosity is a necessary condition for power attainment, while cumulative hazard constrains continuity. Independence from the Sun can occur before the energy threshold. The framework separates physical access, usable power, and durable civilizational viability, identifies their distinct timescales, and provides reproducible scenario calculations.

Abstract: We propose a novel hypothesis for the physical nature and existence of dark matter, derived from Hawking’s cosmology. It retains the standard gravitational field equations, but attributes the additional gravitational contribution to a different projected mass distribution. It does not introduce new physical parameters or concepts nor ad-hoc assumptions about the nature of dark matter that lead to an NFW-halo in galaxies and yet explains the observations. Instead, this article argues it is the effect of a superposition of all 165 possible 3-dimensional universes in 11-dimensional space, of which zero to two dimensions overlap with our universe. The conjectural premise is that nothing that could disturb this superposition exists. This, with the dimensions of strings in String theory and in intersecting brane-worlds concepts, explains why dark matter causes flat rotation curves at large radii in galaxies. To support this, the matter distribution in the disks and bulges, calculated by the SPARC team, and the observed rotation velocities are used. Lelli and Mistele showed that the common way to project dark matter halos around galaxies cannot be valid. An alternative is to model dark matter as an emergent result of the compactified dimensions in String theory and the way gravity from superposed universes acts through them. This as well explains the rapid development of large galaxies in the early universe as reported by Labbé. We propose a prediction method for rotation velocities as accurate as MOND. It shows considerable improvement of the predicted velocity dispersions compared with MOND in galaxy clusters.

Abstract: TOI-2076 is a young, compact multi-planet system whose orbital architecture places its adjacent planets close to low-order mean-motion commensurabilities. We investigate the dynamical stability and near-resonant behaviour of the system using direct N-body simulations with the REBOUND package and the WHFast symplectic integrator. Three independent realizations, initialized with randomized orbital phases, were integrated for t = 2 ×10⁶ yr using a timestep of Δt = 0.5 days. All three realizations remained stable throughout the simulations, with no planetary ejections or collisions. The eccentricities showed bounded oscillations without clear secular growth, with mean standard deviations of \( {\sigma }_{e_{b}}=0.00382, {\sigma }_{e_{c}}=0.00329 \), and \( {\sigma }_{e_{d}}=0.00335 \) for TOI-2076 b, c, and d, respectively. The nominal period ratios are \( \frac{P_{c}}{P_{b}}=1.6577 \) and \( \frac{P_{d}}{P_{c}}=2.0461 \), compared with the exact 5:3 and 2:1 commensurabilities of 1.6667 and 2.0000, respectively. The corresponding resonance angles circulate through the full 0°C–360°C range rather than remaining confined to a bounded libration region, indicating that the simulated configurations remain near-resonant without evidence of resonance locking over the 2 Myr integration. The period ratios also remain nearly constant throughout the simulations, with no systematic evolution toward exact commensurability. Overall, the results show that the adopted TOI-2076 configuration remains dynamically stable over the simulated interval while maintaining a near-resonant, non-librating orbital architecture. These results provide a numerical baseline for future studies using longer integrations and a broader exploration of uncertainties in the planetary orbital and physical parameters.

Abstract: A previous trajectory study used the early orbital plane of asteroid 2001 CA21 as a geometric filter for identifying rapid Earth-Mars transfers. The present work evaluates whether three 2031 round-trip profiles can be embedded in crewed-mission architectures: 56 + 35 + 135 days and 72 + 14 + 140 days, both totaling 226 days, and 86 + 10 + 135 days, totaling 231 days. JPL Horizons DE441 boundary states, short-way Lambert solutions, trajectory dispersions, rocket-equation mass budgets, and point-mass atmospheric simulations are combined with separation of the outbound, surface, and predeployed return systems. The outbound Earth hyperbolic excess velocities are 16.879, 11.843, and 11.844 km/s, while the corresponding Mars-arrival values are 16.638, 13.671, and 9.866 km/s. The original 56-day case closes with a 27 t departure stack in the 450 s screening case and a layered Mars-arrival sequence of propulsive pre-braking, mass separation, and guided lifting aerocapture. The longer outbound profiles avoid the large residual departure stage. Predeployed three-stage chemical return stacks require 172.9/129.8 t for the common 135-day return and 119.9/94.1 t for the 140-day return at specific impulses of 450/500 s, respectively; each architecture can be divided between two sub-100 t cargo deliveries. Earth recovery uses a 4 t two-person capsule, chemical pre-braking, and a guided two-pass entry. Nuclear-thermal propulsion at 800-900 s is retained as a mass-reduction option rather than a baseline requirement. These results establish constructive mission-level closure for the original proposal while identifying cryogenic storage, high-energy atmospheric qualification, and finite-burn navigation as verification tasks.

Abstract: Space travel is hazardous because its environment contains higher amounts of radiation compared to the Earth. For this reason, materials must be optimized for radiation shielding to protect organic life forms and electrical equipment. This project focuses on creating effective shielding for protection against space radiation. The Stopping Range of Ions in Matter (SRIM) is a software used to simulate the electronic stopping power of protons in materials and can assist in optimizing them for shielding. SRIM was used to simulate diamond (D), graphite (G), carbon nanotubes (CNT) and combinations of material layer ordering consisting of the three allotropes with 145 MeV Protons. Results showed that diamond, graphite and carbon nanotube (D_G_CNT) were the optimal order of layering for minimum penetration depth amongst these multi-layered materials. The multi-layered material CNT_G_D having the least effective stopping power reordered to D_G_CNT, the travel depth reduces by 28.14%, showing how layer ordering effects the stopping power of a material.

Abstract: The rate of change of the total electron content index (ROTI) is a widely used proxy for phase fluctuations associated with ionospheric irregularities derived from GNSS total electron content measurements. This study investigates the longitudinal day-to-day variability of ionospheric irregularities over the African Equatorial Ionization Anomaly (EIA) region during 2014 using ROTI from six GNSS stations at low latitudes. Day-to-day variability is quantified through differences between consecutive daily ROTI values (ΔROTI), relative ROTI (RROTI), correlation coefficients, daily deviations from climatology, and variability magnitude. The results reveal clear longitudinal day-to-day variability between East and West African sectors, with larger variability in West Africa. Diurnal ROTI peaks reach about 2 TECU/min in East Africa and about 3 TECU/min in West Africa. Correlation coefficients within the same longitude sector range from 0.678 to 0.848, whereas cross-sector correlations range from 0.476 to 0.689. ΔROTI and RROTI indicate that day-to-day variability is driven mainly by short-period lower-atmospheric forcing rather than slow solar forcing. Relative variations range from about -70% to +150%, with predominantly negative values during solstices and positive values during equinoxes.

Abstract: Subauroral geospace is a dynamic region. Its various features include Subauroral Polarization Streams (SAPS), hot and cold zones, and storm enhanced densities (SED). Previous studies covered the nightside leaving the dayside largely unexplored and poorly understood. This study investigates the dayside’s prenoon and midday sectors based on multi-satellite multipoint observations. As shown, dayside SAPS development was set off by solar-wind flow pressure increases compressing the dayside magnetosphere in the equatorial plane and triggering earthward-directed hot plasma surges or particle injections both in the Alfvenic solar wind and in the solar-wind-exposed dayside magnetosphere. In the inner magnetosphere, SAPS developed in a voltage generator and appeared sometimes within the hot zone where field-aligned temperature anisotropy (T‖ > T) generated electromagnetic whistler-mode chorus waves that implicitly participated in the plasma heating and sometimes within the cold zone where the isotropic ion temperature (Ti‖ ≈ Ti) minimized and electron temperature anisotropy (Te‖ > Te) generated whistler-mode hiss waves. In the ionosphere, the prenoon/midday SAPS mapped down to the noontime SED plume base depicted by the Total Electron Content maps. SAPS development was unfolding in a prenoon eastward auroral electrojet (AEJ) scenario on the dawnside or in a midday westward AEJ scenario on the duskside.

Abstract: This article reviews several series of peaceful underground nuclear explosions (UNEs) conducted in the Soviet Union and focuses on the radioecological situation in the areas where they were conducted, which has been studied over the past 30 years. It has been shown that the main cause of radioactive contamination of the surface above the site of peaceful UNEs is the presence of underground and groundwater, which facilitate the migration of radionuclides to the surface and their further spread beyond the test area. Using the example of the Moon, it is shown that on celestial bodies considered as objects of future colonization, such as Mars, the moons of Jupiter and minor bodies of the asteroid belt, where hydrodynamic activity near the surface is absent or significantly limited, peaceful UNEs can be used not only for seismic sounding of the subsurface, but also as artificial geothermal energy sources for inhabited bases, capable of ensuring their functioning for decades.

Abstract: We present a preliminary study of the feasibility assessment of a magnetic shield designed to protect a space probe from cosmic radiation via magnetic deflection using neodymium permanent magnets. This work is based on theoretical considerations whose preliminary indications are intended to provide the base for future Monte Carlo simulations and laboratory validation. The novelty of our approach is the use of a magnetic shield whose competitiveness with conventional passive absorbing shielding is not investigated here but deserves to be the topic of upcoming work. The primary objective is to protect a spacecraft from the flux of charged particles emitted by the Sun. To achieve this, we will combine theoretical modeling and numerical simulations, followed by the construction of a prototype to be tested in a laboratory environment and and a potential future CubeSat-scale experimental validation.

Abstract: It is still poorly understood how Ionospheric Connection Explorer (ICON) can observe at ~600 km altitude the quiet-time equatorial plasma fountain and vertical E×B drift variation over the dip equator including its before-reversal evening increase known as the pre-reversal enhancement (PRE). To fill this knowledge gap, this study uses multi-instrument and multi-point observations to demonstrate the Equatorial Ionization Anomaly (EIA) and the EIA’s breaking down along with their respective underlying forward and revers fountains, and their equatorial vertical upward and downward E×B drift drivers. Jicamarca radar data validated the vertical E×B drift’s daily variation and evening PRE. Total electron content maps verified the EIA’s spatial variation at ~350 km altitude. Before and during the PRE, ICON observed the EIA as a two-peak/single-peak structure at higher/lower sunspot numbers. Underlying the EIA, the forward fountain drift pattern appeared as a latitudinal narrow (~2.5^o) equatorial vertical upward E×B drift enhancement and broader off-equatorial downward drifts related to field-aligned downward plasma diffusions. Underlying the breaking-down EIA, the reverse fountain showed an opposite drift pattern. As a conclusion, a ±1.25^oN (dip) latitude restriction should be applied to the ICON data to correctly specify the PRE by excluding off-equatorial drifts.

Abstract: We analyse different configurations of four emitters in a Relativistic Positioning System (RPS) with: (i) one inertial and three static emitters, (ii) one hyperbolic and three static emitters and (iii) three rotating and one static emitter. For every configuration we analyse the emission/reception conditions, represent the emission configuration regions and write the user’s location solution. We follow the notions and terminology of previous works in this topic.

Abstract: Space weather events triggered by solar activity impact critical technologies like the Global Navigation Satellite System (GNSS) by causing atmospheric imbalances that alter ionospheric electron density. This study investigates the geospace response to the severe geomagnetic storms of October 2024, focusing on the coupling and compositional exchange between the ionosphere and thermosphere. Data were analyzed from two near-magnetic conjugate mid-latitude African stations, Rabat (RABT) and Hermanus (HNUS), using GNSS-TEC measurements alongside thermospheric circulation observations from NASA GOLD and solar wind indices from OMNIWeb. The October 2024 storm, which reached a minimum Dst of -333 nT, drove a negative ionospheric storm phase marked by Total Electron Content (TEC) depletions exceeding 50 TECU. This response was driven by storm-time thermospheric upwelling of N2-rich air, which lowered the O/N2 ratio and accelerated plasma loss via charge-exchange reactions. Furthermore, a distinct hemispheric asymmetry was observed, as the equatorward thermospheric circulation in the Northern Hemisphere arrived before that of the Southern Hemisphere. Direct post-processing of ECEF coordinates using RTKLIB revealed a "GNSS Paradox": while positioning accuracy significantly degraded at HNUS with errors increasing by up to 270%, it counterintuitively improved at RABT, where errors reached their minimum during the main and early recovery phases of the storm. These findings highlight that the technological impact of severe space weather is determined not just by storm magnitude, but by the specific sign and spatial structure of the regional ionospheric response.

Abstract: We prove that the null cone is enough: at every event in Minkowski spacetime, the null cone carries a two-dimensional conformal field theory with spectrum \Delta_{\ell} = \ell +1 , unifying all massless fields of spin \ell = 0,\frac{1}{2},1,\frac{3}{2},2 through pure geometry. The framework is classical throughout. From two postulates—four-dimensional Minkowski spacetime and the Isometric Sampling Condition (the requirement that field sampling on a lattice be a unitary isomorphism)—the unique Lorentz-invariant propagator is G(x,y) = \sin (\Omega \sqrt{-\sigma^2 - i\epsilon}) / (\Omega \sqrt{-\sigma^2 - i\epsilon}) , where the Feynman i\epsilon prescription selects the unique L^2 branch in the spacelike region. The RKHS normalisation K(x,x) = 1 forces G = 1 on the null cone, so the full two-point function is controlled entirely by a 2D CFT on the transverse S^2 , yielding \Delta_{\ell} = \ell +1 . Fermionic statistics arise from the \mathbb{Z}_2 holonomy of an \mathrm{SL}(2,\mathbb{C}) fibre bundle without any additional postulate. Seven independent paths—spanning operator algebra, tractor calculus, antenna theory, and celestial holography—converge on this result. At large angular scales (\ell \lesssim 30) , the condition G = 1 forces the CMB angular power spectrum C_{\ell} toward a geometric constant, consistent with the Planck anomaly.

Abstract: We present an innovative, cost-effective framework integrating laboratory Hyperspectral Imaging (HSI) of the BECHAR 010 lunar meteorite with ground-based lunar HSI and supervised Machine Learning (ML) to generate high-fidelity mineralogical maps. A \SI{3}{\milli\metre} thin section of BECHAR 010 was imaged under a microscope with a \SI{30}{\milli\metre} focal length lens at \SI{150}{\milli\metre} working distance, using 6x binning to increase the signal-to-noise ratio, producing a data cube (X \(\times\) Y \(\times\) \(\lambda\) = $791 \times 1024 \times 224$, \SI{0.24}{\milli\metre} \(\times\) \SI{0.2}{\milli\metre} resolution) across \SIrange{400}{1000}{\nano\metre} (224 bands, \SI{2.7}{\nano\metre} spectral sampling, \SI{5.5}{\nano\metre} FWHM spectral resolution) using a Specim FX10 camera. Ground-based lunar HSI was captured with a Celestron 8SE telescope (\SI{3}{\kilo\metre}/pixel), yielded a data cube ($371 \times 1024 \times 224$). Solar calibration was performed using a Spectralon reference (\SI{99}{\percent} reflectance \SI{< 2}{\percent} error) ensured accurate reflectance spectra. A Support Vector Machine (SVM) with a radial basis function kernel, trained on expert-labeled spectra, achieved \SI{93.7}{\percent} classification accuracy (5-fold cross-validation) for olivine (\SI{92}{\percent} precision, \SI{90}{\percent} recall) and pyroxene (\SI{88}{\percent} precision, \SI{86}{\percent} recall) in BECHAR 010. Local Interpretable Model-agnostic Explanations (LIME) identified key wavelengths (e.g., \SI{485}{\nano\metre}, \SI{22.4}{\percent} for M3; \SI{715}{\nano\metre}, \SI{20.6}{\percent} for M6) across 10 pre selected regions (M1 to M10), indicating olivine-rich (Highland-like) and pyroxene-rich (Mare-like) compositions. Spectral Angle Mapper (SAM) analysis revealed angles from \SI{0.26}{\radian} to \SI{0.66}{\radian}, linking M3 and M9 to Highlands and M6 and M10 to Mares. K-means clustering of lunar data identified 10 mineralogical clusters (\SI{88}{\percent} accuracy), validated against Chandrayaan-1 Moon mineralogy Mapper (\(\rm M^3\)) data (\SI{140}{\metre}/pixel, \SI{10}{\nano\metre} spectral resolution). A novel push-broom HSI approach with telescope, achieves 0.8 arcsec resolution for lunar spectroscopy, inspiring full-sky multi-object spectral mapping.

Abstract: This paper explores the fundamental nature of spacetime from the perspective of emergent causal structures, rooted in quantum mechanical principles. We propose a theoretical framework that treats spacetime not as a pre-existing background, but as a collective phenomenon arising from the interaction of quantum causal relations. By analyzing the constraints of causality and quantum coherence, we derive key implications for the emergence of classical spacetime geometry and the limits of local realism. Our results suggest a new way to bridge quantum mechanics and gravitational theory, providing a foundation for future studies in quantum gravity and spacetime physics.

Abstract:

Rapid subauroral flows occurring at unusually high magnetic latitudes during quiet times and weak substorms are rarely investigated and poorly understood. We investigated the phenomenon in a comprehensive way by using multi-instrument and multipoint satellite observations along with a set of computed variables. We specified 5 Subauroral Polarization Streams (SAPS) and 28 Subauroral Ion Drifts (SAID) events observed in the Northern Hemisphere by spacecraft F18 in 2013. Driven by the strong poleward SAPS-SAID electric (E) fields (90–190 mV/m), high-latitude SAPS-SAID flows reached supersonic velocities (2400-5200 m/s) and developed at unusually high (≥68^o) magnetic latitudes, in the dusk sector, sometimes on the dayside. The high-latitude SAPS/SAID flows appeared in the deep main trough and mostly within the downward region-2 current suggesting their previous development. Their underlying vertical upward/downward drifts, driven by eastward/westward zonal E fields, imply positive feedback mechanisms in progress. Earthward energy depositions into the high-latitude SAPS and SAID channels indicate magnetospheric electromagnetic energy generations in their respective voltage generators. Conjugate observations demonstrate the development of large outward SAID E field (E_X≈10 mV/m) on 28 October 2013 and SAPS E field (E_X≈10 mV/m) on 14 October 2013 at L≈10 R_E on a short timescale at dusk.

Abstract: The exceptionally strong geomagnetic storm of 10-11 May 2024 injected new energetic protons and electrons in the terrestrial radiation belts, creating extraordinary conditions to study the loss mechanisms scattering these particles into the atmosphere after the storm. For the first time, four electron belts were observed during several weeks. We show that this structure was due to electron loss highly depending on specific positions. Using the proton and electron fluxes measured by the Energetic Particle Telescope EPT on board PROBA-V, we determine the lifetimes of these populations depending on their energy ranges and positions. We show that the lifetimes are much longer for protons than for electrons, which allows us to determine their time variations independently. For electrons, the wave-particle loss mechanisms depend on the background ionosphere-plasmasphere density. The lifetimes determined after the May 2024 and 10 October 2024 big events are compared with average ones to understand their unusual specificity for the formation of four and three belts, respectively. For the injected protons of 9.5 to 13 MeV, the lifetime is minimum at L~1.9 where the fluxes are maximum, showing a lifetime depending on the flux intensity. Loss is due to pitch angle diffusion and collisions with electrons and nuclei in the ambient plasma and neutral atmosphere. At the outer edge of the proton belt, the flux is depleted at all energies after the geomagnetic perturbation, and we determine that the progressive time of refilling after the storm reaches generally more than 40 days. There is an excellent discrimination between the different populations of energetic electrons (0.5-8 MeV) and the injected protons (9.5-13 MeV) that are still observed several months after the event. Such results contribute to advancing understanding of the interactions between the terrestrial atmosphere and space radiation.

Abstract: This paper presents a conducting channel model aimed at elucidating the generation of high-energy particles within a plasma chamber. Initially, the chamber is charged with neutral hydrogen gas at a density of approximately ~3.3×10²²/m³, equivalent to 1 torr at 300K under ideal gas conditions. A Townsend discharge (dark discharge), driven by an externally imposed electric potential (500-1000V) across the cathode and anode, is utilized to induce partial ionization of the hydrogen gas. Once a stable conducting channel with a high conductivity is established, a low electric potential (e.g., 100V-500V) is introduced to sustain the current in the conducting channel. Our investigation then delves into the impact of a high electron emissivity cathode, such as lanthanum hexaboride (LaB6) during an arc discharge. We develop a theoretical model of the conducting channel that may emerge under these conditions. As the cathode surface undergoes heating, emitted thermionic electrons form a localized layer of negative charge density, leading to an electric potential dip. Our multi-fluid simulations unveil the emergence of electron-ion two-stream instability owing to the high-density electron layer, leading to the appearance of multiple potential peaks and dips, each measuring several to tens of kV. We delineate a set of conditions conducive to the formation of these potential peaks and dips within the conducting channel. Our proposed scenario furnishes a framework for elucidating electron and ion acceleration within a weakly ionized plasma chamber.

Abstract: Early orbital predictions for the near-Earth asteroid 2001 CA21 — based on 2015 JPL Horizons data — revealed a trajectory with an eccentricity of 0.777, a perihelion of 0.373 AU, and an aphelion extending to 2.967 AU. While subsequent refinements altered the asteroid’s actual orbit, these initial parameters provided a valuable reference template for designing rapid Earth–Mars transfers. By anchoring transfer-plane geometry to the CA21 orbital solution, we identified novel mission opportunities capable of drastically reducing interplanetary travel times.Our analysis highlights the 2031 opposition as the most favorable case: a 56-day transfer with , only marginally exceeding the New Horizons record, and , challenging but potentially addressable with aerocapture or braking tug concepts. A 33-day extreme trajectory is also geometrically possible in 2031, though requiring departure energies ( ) and arrival speeds ( ) well beyond current or near-term propulsion systems.Earlier opportunities in 2027 and 2029, while closer in time, impose even higher energetic barriers (departure velocities ~19 km/s, arrival ~17.5–20 km/s), underscoring the counterintuitive reality that shorter Earth–Mars distances do not guarantee lower transfer energy.This study therefore proposes a new methodological framework: using early asteroid orbital predictions as trajectory templates to identify both feasible and aspirational rapid-transit missions. By linking NEO orbital geometry with Lambert-based transfer analysis, we establish practical benchmarks for propulsion and capture technologies, demonstrating that 2031 provides a near-term achievable baseline, while also defining the aspirational frontier of one-month Mars missions.

Abstract:

We demonstrate that gravitational spin memory, conventionally regarded as a signature of massless spin-2 gravitons, can emerge from a purely scalar field theory when the scalar couples to matter through torsion-modified Riemann-Cartan geometry. Derivative Frequency Theory (DFT) posits gravitational phenomena arise from gradients of a massive scalar frequency field \( \omega(x) \) with inverse scale \( \mu^{-1} \sim 17 \) kpc determined from galactic rotation curves. We prove a general theorem: spin memory exists in any theory satisfying (i) asymptotic radiation, (ii) angular momentum sensitivity, (iii) parity-odd transport, and (iv) infrared memory kernel---independent of mediator spin. In DFT, chirality originates not from the scalar field itself but through its coupling to contorsion \( K^\lambda_{\mu\nu} = \xi\epsilon^\lambda{}_{\mu\nu\rho}J^{\rho\sigma}\partial_\sigma\omega \). The theory predicts distinctive Yukawa suppression of memory effects: \( \Delta\tau_{\text{DFT}}/\Delta\tau_{\text{GR}} \sim e^{-\mu D} \), leading to \( \sim \)45\% suppression for galactic LISA sources (\( \mu D \sim 0.6 \)) and complete suppression for extragalactic mergers (\( \mu D \gg 1 \)). We derive consistent predictions across scales: solar system tests satisfied (\( \Delta\gamma \sim 10^{-12} \)), flat rotation curves explained without dark matter, and cosmological perturbations nearly identical to \( \Lambda \)CDM at large scales. Weak equivalence principle violation is \( \mathcal{O}(10^{-47}) \), far below current sensitivity. The framework is falsifiable through three independent tests with clear timelines: galactic rotation curve morphology (JWST/SKA, 2025-2030), LISA memory measurements (2037-2040), and proposed LC oscillator experiments (1-2 years). DFT offers a minimal scalar alternative to GR that is testable, consistent with current data, and potentially transformative if confirmed.