Physics
Star Forming Regions
90%
Star Formation
62%
Protostars
61%
Space Observatories
58%
Infrared Dark Clouds
41%
Massive Star
36%
Young Stellar Objects
34%
High-Mass Stars
22%
Vapor Phase
21%
Point Source
18%
Bolometer
18%
Dark Interstellar Clouds
18%
Radiative Transfer
16%
High Resolution
16%
Data Transmission
15%
Line of Sight
14%
Molecular Clouds
14%
Infrared Space Observatory
14%
Photometer
13%
Low-Mass Star
13%
Spectral Sensitivity
12%
Infrared Spectroscopy
12%
Interstellar Matter
11%
Physics
9%
Line Spectra
9%
Flight Instrument
9%
Heterodyne Receiver
9%
Stellar Core
9%
Submillimeter Wave Astronomy Satellite
9%
Spectral Band
8%
Abundance Ratio
8%
Ground State
7%
Molecular Gas
7%
Photodissociation
7%
Spatial Distribution
6%
Baryon
6%
Fine Structure
6%
Hot Electron
6%
Coma
6%
Flight Test
6%
North Ecliptic Pole
6%
Evolved Stars
6%
Space Telescope
6%
Signal-to-Noise Ratio
6%
Sky Surveys
6%
Data Product
6%
High Temperature Gas
6%
CO Line Emission
6%
Redshift Surveys
6%
Lineshape
6%
Earth and Planetary Sciences
Emissions
100%
Protostars
53%
Star Formation
35%
Data Transmission
33%
Massive Star
31%
European Space Agency
23%
Radiative Transfer
18%
Photometer
15%
Spectral Band
13%
Line of Sight
12%
Bolometer
12%
Data Product
12%
Spectral Resolution
11%
Photodissociation
10%
Ground State
10%
Vapor Phase
10%
Shoreline
10%
Molecular Clouds
9%
Flight Instrument
9%
Radio Observation
9%
Submillimeter Wave Astronomy Satellite
9%
Cold Water
8%
Spatial Resolution
7%
Hydroxyl Radical
6%
Flight Test
6%
Gas Density
6%
Infrared Spectroscopy
6%
Carbon Star
6%
Hot Electron
6%
Interferometry
6%
Flux Density
6%
Correlator
6%
Hydrofluoric Acid
6%
Frequency Multiplier
6%
Liquid Cooling
6%
Resolution Cell
6%
Space Mission
6%
Protoplanetary Disk
6%
Nebulae
6%
Spatial Distribution
5%
Keyphrases
Herschel
38%
Star Forming Regions
31%
Spectrometer
25%
Protostars
14%
Massive Stars
14%
Water Abundance
12%
Low-mass Stars
12%
AKARI
12%
Heterodyne Instruments
12%
Hydrogen Peroxide
12%
Far-infrared
9%
Data Reduction
9%
Infall
8%
Line Profiles
8%
Shock
8%
O 18
8%
Galactic Plane
8%
Radio Observations
8%
Column Density
8%
Infrared Space Observatory
7%
Ecliptic
7%
Galactic
7%
Abundance Variation
6%
Chemical Segregation
6%
James Clerk Maxwell
6%
Galactic Foreground
6%
On-orbit Performance
6%
HCO+
6%
Terahertz
6%
Gould Belt
6%
Photodetector Array
6%
H218O
6%
Infrared Detection
6%
Full-scan
6%
Far-infrared Spectroscopy
6%
Small Molecular Fraction
6%
Protoplanetary Disks
6%
Line-of-sight
6%
Complete Set
6%
Infrared Dark Clouds
6%
Absorption Lines
6%
Cold Water
6%
Observatory
6%
Comet 81P/Wild 2
6%
Fluoride Emission
6%
Millimetron
6%
Water Cooling
6%
Hydrides
6%
Multiline
6%
Radio Surveys
6%
