pulsator
geomagnetics
geotectonically
geothermobarometric
optical astronomy
galactographer
radio observation
telescopically
geomagnetically
armillary sphere
solargraphic
geodesian
geomagnetic
astromathematical
stargazing
telescopical
astrometeorologist
astro-
teleotoscope
armilla
geodetic
starcraft
geostatistician
Mitchell
vulcanological
Shapley
telescopy
Maria Mitchell
geotectonical
paleointensity
Hubble
altazimuth
heliogeomagnetics
Harlow Shapley
geophysical
heliometer
geomathematically
astroseismicity
backstaff
heliogeophysical
astroagricultural
lithium-drifted silicon detector
sidereal time
spectromagnetograph
revolve
semidiameter