- Bartol Research Institute - University of Delaware
 - Center for Astrophysical Research in Antarctica (CARA) (2)
- Center for Astrophysics and Space Astronomy (CASA) - University of Colorado at Boulder
- LIGO Livingston
- LIGO (Laser Interferometer Gravitational-Wave Observatory) is a two and a half mile long astrophysical detector built to observe waves of cosmic origin.
- Lockheed Martin Solar and Astrophysics Laboratory
- Scientists and engineers who design, build, operate, and use solar and astrophysical observing instruments.
- MACHO Project
- Primary aim is to test the hypothesis that a significant fraction of the dark matter in the halo of the Milky Way is made up of objects like brown dwarfs or planets, known as MACHOs, for MAssive Compact Halo Objects.
- Massachusetts Institute of Technology (MIT) - Space Plasma Group
- Has active instruments on three spacecraft, IMP 8, Voyager 2, and WIND.
- Max-Planck-Institut für Astrophysik (Germany)@
- Max-Planck-Institut für extraterrestrische Physik (MPE)@
- MSAM/TopHat Scientific Balloon Program
- Collaboration working on a series of experiments to measure the medium-scale anisotropy of the cosmic microwave background radiation (CMBR).
- NASA Goddard Space Flight Center Laboratory for High Energy Astrophysics (LHEA)@
- NASA Goddard Space Flight Center Astrophysics Data Facility
- Neil's Original Astrodynamics
- Neil H. Jacoby, Jr. defines the terms astrodynamics, astronautics, and heliocentric orbit determination. Proposes a solution to the non co-planer geocentric orbit transfer and Kepler's equation.
- Particle Astrophysics Group - Case Western Reserve University
- Conducting research in cosmic microwave background, dark matter, high energy astrophysics, and cosmology.
- Peterson Group - Carnegie Mellon Astrophysics
- Research on cosmic microwave background radiation at the South Pole.
- Space Radiation Laboratory (SRL) - California Institute of Technology
- White Dwarf Research Corporation
- Nonprofit organisation dedicated to scientific research and public outreach on topics relevant to white dwarf stars.
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