Is Extraction of Methane, Hydrogen and Oxygen from the Lunar Regolith Economically Feasible?

Is Hercules X-1 a strange attractor?

Is horizontal convection really “non-turbulent?”

Is Hydrodynamic Escape from Small Orbit Extrasolar Planets Fast or Slow? New Solution of Hydrodynamic Equations and Its Applications

Is low-spin Fe2+ present in Earth's mantle?

Is NGC 4569 located near the core of the Virgo cluster?

Is Redshift-Dependent Evolution of Galaxies a Theoretical Artifact?

Is regional air quality model diversity representative of uncertainty for ozone simulation?

Is the Bipolar Planetary-Nebula M2-9 Formed by Self-Consistent Magnetic Confinement?

Is the k-NN classifier in high dimensions affected by the curse of dimensionality?

Is the Kolmogoroff model applicable to large-scale turbulence?

Is the propagation of electromagnetic radiation in cosmological background in agreement with the standard model?

Is The Radio Pulsar J1718-3718 A Quiescent Magnetar?

Is the standard accretion disc model invulnerable?

Is the SUN a VHE neutrino source?

Is the Sun heading for another Maunder Minimum? - Precursors of the grand solar minima

Is there a chronometer hidden deep in the sun

Is there a classical Hyades lithium problem?

Is there a magnetic field that can enforce almost uniform rotation in a stellar radiative zone?

Is there a weak mixed polarity background field? Theoretical arguments