Can overturning motions in penumbral filaments be detected?

Can PAH clusters survive in PDRs?

Can Parity Violation in Neutrino Transport Lead to Pulsar Kicks?

Can particle creation phenomena replace dark energy?

Can past gamma-ray bursts explain both INTEGRAL and ATIC/PAMELA/Fermi anomalies simultaneously?

Can periodicity in low altitude cloud cover be induced by cosmic ray variability in the extragalactic shock model?

Can Phantom-Dominated Universe Decelerate Also in Future ?

Can phase space theory reproduce experimental neutral product branching ratios for dissociative recombination reactions?

Can photo-evaporation trigger planetesimal formation?

Can photo-ionization explain the decreasing fraction of X-ray obscured AGN with luminosity?

Can Photoionization Squelching Resolve the Sub-structure Crisis?

Can Planck constrain indirect detection of dark matter in our galaxy?

Can Planets Influence the Horizontal Branch Morphology?

Can Planets survive Stellar Evolution?

Can Post T Tauri Stars Be Found? Yes!

Can precessing jets explain the light curves of Gamma-ray Bursts?

Can Primordial Black Holes be a Significant Part of Dark Matter ?

Can primordial magnetic fields seeded by electroweak strings cause an alignment of quasar axes on cosmological scales?

Can primordial wormholes be induced by GUTs at the early Universe?

Can Processes Used to Extract Presolar Grains from Meteorites be Used to Process Grains Trapped in Aerogel?