Physics & Astronomy
cosmic rays
100%
molecular clouds
42%
bubbles
36%
gamma rays
34%
envelopes
30%
elliptical galaxies
28%
arches
25%
galaxies
25%
coma
23%
penetration
22%
charged particles
20%
x rays
18%
mass to light ratios
17%
stellar mass
15%
tuning
14%
rings
13%
supernova remnants
13%
electrons
12%
high energy electrons
11%
Galactic cosmic rays
10%
protons
10%
particle energy
10%
energy dissipation
10%
microwave emission
9%
nonthermal radiation
8%
galactic halos
8%
energy
8%
interactions
7%
energetic particles
7%
ionization
6%
hydrogen
6%
iron
6%
flares
5%
turbulence
5%
velocity distribution
5%
magnetic disturbances
5%
Earth & Environmental Sciences
cosmic ray
25%
arch
20%
gamma radiation
19%
penetration
16%
particle
14%
ionization
7%
iron
5%