A:
Astrophysics Data System (NASA) - Digital Library for Physics, Astrophysics, and Instrumentation. [Multiple agencies involved, Harvard University]

B:
BaBar Experiment - Particle physics experiment investigating the matter-antimatter asymmetry in nature. [Department of Energy (DOE), Stanford Linear Accelerator Center (SLAC)]

C:
Ciencia@NASA - Spanish translations of stories from Science@NASA. [National Aeronautics and Space Administration (NASA)]

H:
High Energy Physics (HEP) Reviews - A guide to review literature in the field of HEP and astrophysics with useful articles selected and categorized by physicists at SLAC and Fermilab. [Department of Energy (DOE), Fermi National Accelerator Laboratory (FNAL), Stanford Linear Accelerator Center (SLAC)]

I:
Inquiring Minds - Discusses particle physics in general and the work done at Fermilab in particular, with Fermilab Physicist chats and Virtual Ask-A-Scientist [Department of Energy (DOE), Fermi National Accelerator Laboratory (FNAL)]

Institute for Nuclear and Particle Astrophysics (INPA) - Unites LBL research in astrophysics, including solar neutrinos, cosmic rays, dark matter, supernovae, cosmic background radiation and theoretical astrophysics [Department of Energy (DOE), Lawrence Berkeley National Laboratory (LBNL)]

Institute of Geophysics and Planetary Physics (IGPP), Lawrence Livermore National Laboratory - Research in the physics and chemistry of the solid Earth, including seismology, geochemistry, experimental petrology, mineral physics, active tectonics, and hydrology [Department of Energy (DOE), Lawrence Livermore National Laboratory (LLNL)]

N:
Nuclear Science at LBNL - Conducts basic research, at all energies, aimed at understanding the structure and interactions of nuclei and the forces of nature as manifested in nuclear matter [Department of Energy (DOE), Lawrence Berkeley National Laboratory (LBNL)]

P:
Particle Data Group (PDG) - Reviews particle physics and related areas of astrophysics, and compiles/analyzes data on particle properties [Department of Energy (DOE), Lawrence Berkeley National Laboratory (LBNL); National Science Foundation (NSF)]

Primer on Space Weather. - Information on solar flares, Coronal Mass Ejections (CMEs,) and magnetic storms and their effects on the earth. [Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA)]

S:
Science@NASA - Stories about NASA research activities and results. [National Aeronautics and Space Administration (NASA)]

Solar Physics. - Access to solar research. [National Aeronautics and Space Administration (NASA), Marshall Space Flight Center (MSFC)]

Supernova Acceleration Probe (SNAP) - SNAP (Supernova Acceleration Probe) is an advanced observatory that is being proposed for the Joint Dark Energy Mission to measure the dark energy of the universe [Department of Energy (DOE), Lawrence Berkeley National Laboratory (LBNL)]

Supernova Cosmology Project - Discovers and studies distant Type IA supernova to increase our understanding of the universe. [Department of Energy (DOE), Lawrence Berkeley National Laboratory (LBNL)]

T:
TOPCited High-Energy Physics Articles - Annual lists of the most highly cited papers in High Energy Physics and Astrophysics literature including reviews by SLAC and Fermilab physicists [Department of Energy (DOE), Stanford Linear Accelerator Center (SLAC)]

The Institute of Geophysics and Planetary Physics (LANL) - Promotes and supports high quality, cutting-edge science in the areas of astrophysics, space physics, solid planetary geoscience, and complex dynamical earth systems [Department of Energy (DOE), Los Alamos National Laboratory (LANL)]

The Joint Dark Energy Mission (JDEM) - The mission will make precise measurements of the expansion rate of the universe to understand how this rate has changed with time. [National Aeronautics and Space Administration (NASA), Goddard Space Flight Center (GSFC); Department of Energy (DOE), Office of Science (SC), Office of High Energy Physics]

The Universe Adventure - Introduces the user to Cosmology: the study of the structure, history, and fate of the Universe [Department of Energy (DOE), Lawrence Berkeley National Laboratory (LBNL)]

Thomas Jefferson National Accelerator Facility (Jefferson Lab) - Conducts basic research of the atom's nucleus at the quark level [Department of Energy (DOE), Jefferson Lab (JLAB)]