Physics & Astronomy
sunspots
100%
eclipses
99%
coronas
83%
field strength
55%
magnetic fields
42%
valleys
41%
polarity
39%
observatories
38%
x rays
38%
solar eclipses
31%
faculae
30%
solar arrays
29%
brightness temperature
26%
moon
25%
rockets
23%
radio emission
23%
angular resolution
22%
brightness
18%
coverings
18%
interferometers
17%
frequency ranges
16%
telescopes
15%
electron energy
15%
gradients
13%
radiation
11%
electrons
8%
Earth & Environmental Sciences
sunspot
96%
corona
93%
radio
74%
magnetic field
74%
observatory
30%
electron
23%
valley
23%
solar eclipse
23%
interferometer
19%
electron density
18%
brightness temperature
17%
Moon
16%
radiation
12%
transition
10%
temperature
6%