Physics & Astronomy
galaxies
100%
telescopes
49%
stars
46%
quasars
45%
luminosity
30%
star formation
25%
supernovae
25%
dust
23%
Hubble Space Telescope
20%
dark energy
20%
adaptive optics
18%
halos
17%
dwarf galaxies
16%
observatories
16%
universe
14%
cameras
14%
planets
14%
active galactic nuclei
13%
mirrors
13%
x rays
13%
gases
13%
catalogs
13%
Magellanic clouds
12%
continuums
12%
radii
12%
spectroscopy
11%
nebulae
11%
James Webb Space Telescope
11%
neutron stars
11%
photometry
11%
extrasolar planets
11%
star formation rate
11%
stellar mass
11%
color
10%
dark matter
10%
metallicity
10%
time measurement
10%
wavelengths
9%
estimates
9%
rotational spectra
9%
kinematics
9%
histories
9%
lenses
9%
sky
9%
brightness
9%
spectral energy distribution
8%
cosmology
8%
spectrographs
8%
orbits
8%
event horizon
8%
poles
8%
high resolution
8%
massive stars
8%
light curve
7%
simulation
7%
molecular clouds
7%
profiles
7%
astrophysics
7%
proper motion
7%
millimeter waves
6%
aberration
6%
explosions
6%
molecules
6%
protostars
6%
coronagraphs
6%
astronomy
6%
molecular gases
6%
performance
6%
envelopes
5%
photons
5%
microwaves
5%
accretion disks
5%
globular clusters
5%
clumps
5%
ejecta
5%
neutrinos
5%
gravitational lenses
5%
apertures
5%
detectors
5%
metals
5%
intergalactic media
5%
radial velocity
5%
Earth & Environmental Sciences
luminosity
58%
dust
24%
gas
20%
radio
19%
accretion
18%
near infrared
18%
energy
17%
spectroscopy
16%
detection
15%
merger
14%
distribution
13%
observatory
13%
wavelength
13%
planet
12%
young
11%
transition
11%
cosmology
10%
outflow
10%
kinematics
10%
rate
10%
erg
9%
explosion
8%
simulation
8%
history
7%
parameter
6%
hydrogen
6%
ionization
6%
probe
6%
metal
6%
ejecta
6%
analysis
5%
gamma radiation
5%
power law
5%
polarization
5%
COSMOS
5%
cold
5%
oscillation
5%
extinction
5%
field survey
5%