Physics & Astronomy
galaxies
100%
stars
38%
telescopes
30%
dust
29%
adaptive optics
27%
stellar mass
26%
extrasolar planets
25%
star formation
22%
star formation rate
20%
cameras
18%
planets
17%
stellar structure
15%
luminosity
14%
supernovae
14%
observatories
12%
photometry
10%
molecular gases
10%
metallicity
9%
gases
9%
wavelengths
9%
active galactic nuclei
9%
Hubble Space Telescope
8%
halos
8%
spectroscopy
8%
color
8%
spectral energy distribution
8%
kinematics
8%
spectrographs
7%
interferometers
7%
mirrors
6%
Tully-Fisher relation
6%
sky
6%
James Webb Space Telescope
6%
coronagraphs
6%
catalogs
6%
estimates
6%
radii
5%
extinction
5%
brightness
5%
performance
5%
time measurement
5%
extremely high frequencies
5%
high resolution
5%
ultrahigh frequencies
5%
disk galaxies
5%
orbits
5%
galactic evolution
5%
debris
5%
Earth & Environmental Sciences
dust
28%
luminosity
28%
planet
16%
gas
15%
spectroscopy
13%
wavelength
12%
near infrared
11%
rate
9%
kinematics
9%
merger
8%
observatory
8%
detection
7%
goods
6%
distribution
6%
young
6%
energy
6%
interferometer
6%
extinction
6%