2 micron spectroscopy of young massive stars in the M17 HII region

2 Pallas and 10 Hygiea in the 3-μm spectral region

2 Years of Galactic Center Monitoring with Swift/XRT

2-D Inhomogeneous Modeling of the Solar CO Bands

2-D Mapping of Ozone and Water (HDO) in the Atmosphere of Mars

2-D MHD model of solar magnetogranulation. Dynamics of magnetic elements

2-day, 3-day, and 5-6-day oscillations of the geomagnetic field detected by principal component analysis

2-Gyr Simulation of the Oort-Cloud Formation. I. Introduction on a New Model of the Outer Oort-Cloud Formation

2-micron absorption features of hydrogen dimers in the equatorial spectra of Jupiter

2.8 cm Radio Emission from α Orionis, HBV 475 and MWC 349

20 Leonis - A triple system with a Delta Scuti variable

20 Million Observations: the AAVSO International Database and its First Century

20 years of beauty physics and 50 years of search for discoveries

20,000 Galaxy Clusters From DPOSS

20,22Ne-E(H) and 4He Measured in Single Interstellar SiC Grains of Known C-Isotopic Composition

200000 yr diatom records from Atlantic upwelling sites reveal maximum productivity during LGM and a shift in phytoplankton community structure at 185000 yr

2001: a Space Census -- Supersoft X-Ray Sources and Other X-Ray Sources in M31

2002 AA29: Earth's recurrent quasi-satellite?

2002 Leonid Observations: The Hubble Helix

2003 CCD minima of eclipsing binaries (Nelson+, 2004)