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Open research questions in Space Science and Extraterrestrial Life

35 unresolved questions extracted from the limitations and future-work sections of 887 Space Science and Extraterrestrial Life papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The historical case of hydrothermal vent ecosystems, discovered in 1977 under conditions that current astrobiological parameters would have declared incompatible with life, serves as empirical proof that our detection frameworks are insufficient even to find all life on our own planet.

    Searching for Ourselves: Anthropocentric Bias and the Limits of Contemporary Astrobiology · 2026 · DOI

  • extraterrestrial the signatures on Earth, life civilization looking for Castellano et al. (2004) noted that there is only a small set of stars that could observe the Earth transiting the Sun—which is the main method we use to find exoplanets. This zone in the sky is called the Earth Transit Zone (ETZ). The strategy is thus to assume that those stars in the ETZ might have detected the Earth easily, not only our technosphere but also our biosphere already billions of years ago. Such stars are thus prime targets for co-detection and communication (see also Heller and Pudritz 2016; Sheikh et al. 2020; Kaltenegger and Pepper 2020; Kaltenegger and Faherty 2021; Sheikh et al. 2025). Another way to converge is by looking for civilizations aligned with the solar gravitational lens (SGL, see figure 9), which is a zone at about 547 AUs where EM radiation converges due to the Sun’s mass (Von Eshleman 1979; Drake 1988; Maccone 2009, 2013a; Tusay et al. 2022; Turyshev 2024). Telescopes placed at this region would gain orders of magnitude in sensitivity, and could even image exoplanets (Turyshev and Toth 2020).

    The Search for Technosignatures: a Review of Possibilities · 2026 · DOI

  • The paper proposes that achieving the 'Ultimate Perfected Geulah State' requires humanity's collective recognition of 'All-Goodness,' 'Morality,' 'Peace,' and 'Harmony' as observable physical features, but does not operationalize how these ethical-metaphysical concepts would be measured, quantified, or embedded into the UCF's mathematical framework to produce falsifiable cosmological predictions.

    G-D's Physics Discovers the Universe's True "Universal Consciousness Reality" & Points at Humanity's "Ultimate Geulah Perfected Goal" State! · 2026 · DOI

  • The claim that the UCP's increased computation rate during the two days of Jewish Rosh Hashanah simultaneously affects space, time, energy, and mass requires specification of how this annual discontinuity (AMI = 0.000968 km s⁻¹ Mpc) would manifest in precision measurements of fundamental constants (fine-structure constant, proton-to-electron mass ratio, gravitational constant) on or near these specific calendar dates, and what observational tolerances would be needed to detect such changes.

    G-D's Physics Discovers the Universe's True "Universal Consciousness Reality" & Points at Humanity's "Ultimate Geulah Perfected Goal" State! · 2026 · DOI

  • The computational definitions for 'mass' (M: count of object-consistent frames / Planck's constant) and 'energy' (E: frame-inconsistent coordinate differences / speed of light) diverge from standard field-theoretic definitions, yet the paper does not provide worked examples showing how these definitions reproduce known quantum mechanical results (e.g., hydrogen atom energy levels, Compton scattering) or how they differ observationally from conventional approaches.

    G-D's Physics Discovers the Universe's True "Universal Consciousness Reality" & Points at Humanity's "Ultimate Geulah Perfected Goal" State! · 2026 · DOI

  • The paper invokes a 'Reversed-Time Geulah Goal' postulate where the Universal Consciousness Reality (UCR) pre-plans cosmic evolution backward from a perfected endpoint state, but does not specify what empirical datasets (e.g., cosmic microwave background anisotropy measurements, large-scale structure surveys, or gravitational wave catalogs) would be required to test whether observed physical constants and initial conditions are consistent with this backward-planning hypothesis.

    G-D's Physics Discovers the Universe's True "Universal Consciousness Reality" & Points at Humanity's "Ultimate Geulah Perfected Goal" State! · 2026 · DOI

  • The Universal Computational Formula (UCF: s * e / t * m) claims to simultaneously compute four physical features across exhaustive spatial pixels at a rate of c²/h = 1.36⁻⁵⁰ sec⁻¹, but the paper lacks mathematical derivation demonstrating how this formula scales to macroscopic observables or how frame-consistent versus frame-inconsistent pixel computations produce testable predictions beyond the Hubble tension.

    G-D's Physics Discovers the Universe's True "Universal Consciousness Reality" & Points at Humanity's "Ultimate Geulah Perfected Goal" State! · 2026 · DOI

  • The paper proposes that the UCP computes all four physical features simultaneously at c²/h rate within exhaustive spatial pixels, but does not specify the mathematical relationship between Planck's constant threshold constraints in the Space definition and how energy computations exceed those thresholds as stated in the Energy definition.

    Science Must Validate "G-D's Physics'" New Twenty-First Century's Physics Paradigm Vs. The Old Twentieth Century's "MCR's" GRT Paradigm! · 2026 · DOI

  • The Universal Computational Formula (UCF: s*e/t*m) is presented without derivation or dimensional analysis showing how spatial pixels, energy values, temporal frames, and mass computations combine dimensionally, or how this formula relates to or differs from established Lagrangian and Hamiltonian mechanics.

    Science Must Validate "G-D's Physics'" New Twenty-First Century's Physics Paradigm Vs. The Old Twentieth Century's "MCR's" GRT Paradigm! · 2026 · DOI

  • The claim that G-D's Physics resolves Hubble's Tension through time-acceleration tied to CHCF and JRH events requires direct comparative validation against independent Hubble constant measurements from Type Ia supernovae, Cosmic Microwave Background, and Baryon Acoustic Oscillation data across multiple observational years including and excluding JRH periods.

    Science Must Validate "G-D's Physics'" New Twenty-First Century's Physics Paradigm Vs. The Old Twentieth Century's "MCR's" GRT Paradigm! · 2026 · DOI

  • The paper introduces computational definitions for the four physical features (Space, Energy, Mass, Time) using 'Frame-consistent' and 'Frame-inconsistent' calculations across Universal Frames, but does not specify how to empirically measure or validate these frame-based computations against existing quantum mechanical and relativistic experimental datasets.

    Science Must Validate "G-D's Physics'" New Twenty-First Century's Physics Paradigm Vs. The Old Twentieth Century's "MCR's" GRT Paradigm! · 2026 · DOI

  • The 'Reversed-Time Geulah Goal' postulate claims the UCP pre-plans universal evolution from an 'Ultimate Perfected Geulah State' backward through inanimate and animate forms, but lacks any testable predictions or observational data that would distinguish this backward-planning mechanism from standard forward-time cosmological models.

    Science Must Validate "G-D's Physics'" New Twenty-First Century's Physics Paradigm Vs. The Old Twentieth Century's "MCR's" GRT Paradigm! · 2026 · DOI

  • Refining methodologies for measuring complexity and uncertainty, and fostering a global research network will be essential steps toward solidifying BH's role.

    Deepening Big History's Understanding & Communication · 2026 · DOI

  • Yet the notion of negative entropy, or negentropy, derived from physics, is insufficient to explain the specificity of life and different orders of causality.

    Organism-Oriented Ontology Beyond the Anthropocene · 2025 · DOI

  • This work provides the basis of UTO, in turn resolving many open questions such as the origination of the physical world, space expansion, expansion acceleration, looking back in time, and the differences between galaxies.

    An Alternative Approach toward the Origin of the Universe · 2021 · DOI

  • So, the apparent simplicity of the classification is highly deceptive: Kardashev?s work offers a wealth of still insufficiently studied methodological and epistemological ramifications and it remains, in both letter and spirit, perhaps the worthiest legacy of the SETI ?founding fathers?.

    Kardashev’s classification at 50+: A fine vehicle with room for improvement · 2015 · DOI

  • - A reasonable attitude: We need not arbitrarily reject others’ views, but neither should we accept any theory as permanent truth as long as solid evidence is lacking.

    Alternative Hypothesis: The Function of Black Holes and the Nature of the Universe · 2026 · DOI

  • The universe tends naturally toward stability; major changes occur only when this balance is disturbed — how many times this has happened remains unknown.

    Alternative Hypothesis: The Function of Black Holes and the Nature of the Universe · 2026 · DOI

  • Astrobiology can—and we argue should—endeavor to grow even more pluralistic through the incorporation of extra-scientific thought, including but not limited to the philosophy of science, ethics, and Indigenous knowledge.

    Epistemic Pluralism & Astrobiology · 2026 · DOI

  • Developing collaborative communication with related disciplines—complexity science, artificial intelligence, astrobiology, and evolutionary modeling—is needed to strengthen Big History's integrative role and monitor ongoing progress.

    Deepening Big History's Understanding & Communication · 2026 · DOI

  • The Journal of Big History could enhance its peer review process by encouraging review papers that explicitly connect Big History to earlier and parallel traditions in systems analysis, historical dynamics, and complexity studies.

    Deepening Big History's Understanding & Communication · 2026 · DOI

  • There remains a significant gap in integrating the wealth of systems and complexity research that predates or operates outside the formal Big History community, including work from early systems theorists, cyberneticists, and complexity scientists.

    Deepening Big History's Understanding & Communication · 2026 · DOI

  • Big History must continue evolving through refining understanding of self-organization, developing new educational models, and incorporating emerging ideas from quantum theory and artificial intelligence.

    Deepening Big History's Understanding & Communication · 2026 · DOI

  • Big History faces limited institutional funding, disagreements on its scope and methodology, and complexities of addressing rapid societal and technological change.

    Deepening Big History's Understanding & Communication · 2026 · DOI

  • Technological globalization can be analyzed from the perspective of the mutations that occurred in the interpretation of the social space from the traditional one, limited to the geographical coordinates of the interaction, to a delocalized and universalizing one.

    Pandemic - Catalyst of the Virtualization of the Social Space · 2020 · DOI

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35 open questions have been extracted from the limitations and future-work passages of 887 Space Science and Extraterrestrial Life papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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