Physics & Astronomy
galaxies
100%
Magellanic clouds
55%
stars
53%
dark energy
53%
supernovae
48%
telescopes
45%
quasars
44%
star formation
42%
molecular clouds
35%
gravitational waves
33%
dust
33%
LIGO (observatory)
29%
luminosity
28%
x rays
28%
nebulae
27%
supernova remnants
27%
catalogs
27%
protostars
25%
planetary nebulae
25%
magnetic fields
23%
poles
22%
halos
20%
polarization
19%
envelopes
19%
dark matter
19%
masers
18%
active galactic nuclei
17%
microwaves
17%
sky
17%
gases
17%
cosmology
16%
molecular gases
16%
massive stars
16%
estimates
15%
light curve
15%
neutron stars
14%
observatories
14%
nuclear fusion
14%
event horizon
13%
H II regions
13%
Hubble Space Telescope
13%
reverberation
13%
ambipolar diffusion
13%
power spectra
13%
astrophysics
13%
continuums
12%
simulation
12%
time measurement
11%
bubbles
11%
wavelengths
11%
binary stars
10%
kinematics
10%
metallicity
10%
physics
10%
baryons
10%
high resolution
9%
explosions
9%
stellar winds
9%
star formation rate
9%
radii
9%
SOFIA (airborne observatory)
9%
line of sight
9%
stellar mass
9%
probes
9%
cameras
9%
universe
9%
gamma rays
9%
spectroscopy
8%
ejecta
8%
field strength
8%
spectral energy distribution
8%
clumps
8%
high temperature gases
8%
neutrinos
8%
XMM-Newton telescope
8%
cosmic rays
8%
color
8%
astronomy
8%
photometry
8%
detectors
8%
millimeter waves
7%
rings
7%
newton
7%
point sources
7%
lenses
7%
histories
7%
shock
7%
magnetohydrodynamics
7%
Very Large Array (VLA)
7%
time lag
6%
accretion disks
6%
Wolf-Rayet stars
6%
sensitivity
6%
predictions
6%
wolves
6%
energy
6%
profiles
6%
protoplanetary disks
6%
spectrometers
6%
scalars
6%
Earth & Environmental Sciences
luminosity
52%
energy
34%
gas
30%
accretion
29%
polarization
27%
merger
23%
detection
18%
cosmology
17%
wavelength
17%
outflow
17%
shell
16%
distribution
15%
simulation
15%
spectroscopy
14%
young
14%
magnetohydrodynamics
14%
gamma radiation
13%
microwave
12%
observatory
12%
bubble
11%
rate
11%
explosion
10%
kinematics
10%
parameter
9%
near infrared
9%
astronomy
9%
effect
9%
erg
9%
analysis
8%
project
8%
ionization
7%
temperature
7%
cosmic ray
7%
transition
7%
angular momentum
7%
radiation
7%
calibration
6%
point source
6%
physical property
5%
very long baseline interferometry
5%
material
5%
comparison
5%
scattering
5%