Observations of the Near- to Mid-Infrared Unidentified Emission Bands in the Interstellar Medium of the Large Magellanic Cloud

Observatons of NGC 3077 Galaxy in Narrow Band [SII] and H_alpha Filters

Observed Scaling Relations for Strong Lensing Clusters: Consequences for Cosmology and Cluster Assembly

Observing Dark Stars with JWST

Observing gravitational wave bursts in pulsar timing measurements

Observing gravitational waves from the first generation of black holes

Observing other universe through ringholes and Klein-bottle holes

Observing simulated galaxy clusters with PHOX: a novel X-ray photon simulator

Observing Supernova 1987A with the Refurbished Hubble Space Telescope

Observing the Big Bounce with Tensor Modes in the Cosmic Microwave Background: Phenomenology and Fundamental LQC Parameters

Observing the End of Cold Flow Accretion using Halo Absorption Systems

Observing the Evolution of the Universe

Observing the molecular composition of galaxies

Observing the Multiverse with Cosmic Wakes

Obtaining the Time Evolution for Spherically Symmetric Lemaître-Tolman-Bondi Models Given Data on Our Past Light Cone

Odd-Parity Bipolar Spherical Harmonics

Off-Axis Energy Generation in Active Galactic Nuclei: Explaining Broad-Line Profiles, Spectropolarimetric Observations, and Velocity-Resolved Reverberation Mapping

Off-Axis Energy Variability of AGNs: a New Paradigm for Broad-Line- and Continuum-Emitting Regions

Offset between dark matter and ordinary matter: evidence from a sample of 38 lensing clusters of galaxies

Ohmic currents and pre-decoupling magnetism