Physics & Astronomy
galaxies
100%
stars
42%
telescopes
36%
adaptive optics
31%
dust
31%
extrasolar planets
28%
stellar mass
26%
star formation
22%
star formation rate
21%
cameras
20%
planets
19%
stellar structure
16%
luminosity
15%
supernovae
14%
observatories
14%
molecular gases
11%
photometry
10%
gases
10%
interferometers
10%
wavelengths
9%
halos
9%
active galactic nuclei
9%
mirrors
9%
Hubble Space Telescope
8%
kinematics
8%
metallicity
8%
spectral energy distribution
8%
color
8%
spectroscopy
8%
spectrographs
7%
Tully-Fisher relation
7%
sky
7%
coronagraphs
6%
estimates
6%
extinction
6%
catalogs
6%
brightness
6%
radii
6%
performance
6%
extremely high frequencies
6%
high resolution
5%
planetary systems
5%
time measurement
5%
ultrahigh frequencies
5%
disk galaxies
5%
orbits
5%
debris
5%
apertures
5%
baryons
5%
Earth & Environmental Sciences
dust
29%
luminosity
28%
planet
17%
gas
16%
wavelength
13%
spectroscopy
12%
near infrared
12%
kinematics
9%
rate
9%
merger
9%
observatory
9%
goods
7%
young
7%
detection
7%
interferometer
7%
extinction
7%
distribution
6%
energy
5%
Mathematics
Telescope
37%
Exoplanets
18%
Adaptive Optics
17%
Imaging
14%
Mirror
11%
Camera
10%
Observatory
10%
Interferometer
9%
Star
9%
Imager
7%
Spectrograph
7%
Wavelength
7%
Wavefront Sensor
6%
Infrared
6%
Extrasolar Planets
5%
High Contrast Imaging
5%