Subject
Astrophysics.
Physics.
296
Observations, Astronomical.
210
Astronomy
208
Geophysics.
65
Gravitation.
36
Cosmology.
30
Astronomy.
29
Nuclear physics.
27
Quantum field theory.
25
Elementary particles (Physics).
23
Space sciences.
22
Atoms.
17
Heavy ions.
17
Planetology.
15
Hadrons.
14
Statistics.
10
Nuclear fusion.
9
Earth sciences.
7
Fluids.
6
Measurement.
6
Physical measurements.
6
Quantum physics.
6
Dynamical systems.
5
Statistical physics.
5
Geochemistry.
4
Mechanics.
4
Microscopy.
4
Solid state physics.
4
Spectroscopy.
4
String theory.
4
Astronautics.
3
Astronomy-Observations.
3
Atmospheric sciences.
3
Atomic structure.
3
Continuum physics.
3
Molecular structure.
3
Optics.
3
Optoelectronics.
3
Particle acceleration.
3
Physical chemistry.
3
Plasmons (Physics).
3
Spectra.
3
Thermodynamics.
3
Acoustics.
2
Aerospace engineering.
2
Biochemistry.
2
Condensed matter.
2
Differential geometry.
2
Geometry.
2
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