Is the Nonhomogeneous Universe an Alternative to Friedman-Robertson-Walker with Λ?

Is the Number of Jupiter's Anticyclonic Spots Periodic?

Is the Rate of γ-Ray Bursts Constant?

Is the Sinking High-Ti Cumulate Hypothesis Sunk?

Is the space-time dimension 11 distinguished in cosmology?

Is the universe filled with bubbles?

Is the Universe near the state of maximal expansion?

Is the universe really expanding?

Is there a 13-hour inertial oscillation in the windfield on the Greenland ice sheet?

Is there a Caroline plate?

Is there a conflict between the Neoproterozoic glacial deposits and the snowball Earth interpretation: an improved understanding with numerical modeling

Is There a Cosmological Constant?

Is there a fundamental acceleration?

Is there a signature in gravitational waves from structure formation of the Universe?

Is there a stable isotope evidence for the CO2 fertilization effect?

Is There an Acceleration Area in the Crab Nebula?

Is there an AGN in the Blue Compact Dwarf Galaxy Mrk 996?

Is There any Relationship Between the Santa Elena Depression and Chicxulub Impact Crater, Northwestern Yucatan Peninsula, Mexico?

Is there Significant Evidence for a Sterile Neutrino?

Is Turing's Thesis the Consequence of a More General Physical Principle?