heliosheath

noun 0.818

helio

noun 0.664

solar corona

noun 0.617

photosphere

noun 0.612

solar wind

noun 0.609

ergosphere

noun 0.605

horosphere

noun 0.598

helioseismology

noun 0.590

heliocentrism

noun 0.584

solar system

noun 0.582

ionosphere

noun 0.572

solar

noun 0.566

celestial sphere

noun 0.559

hypersphere

noun 0.552

interplanetary space

noun 0.550

ecosphere

noun 0.550

pyrheliometer

noun 0.548

heliox

noun 0.546

hydrosphere

noun 0.544

solar energetic particle

noun 0.544

hydrogen spectrum

noun 0.540

solar telescope

noun 0.536

biosphere

noun 0.529

semiosphere

noun 0.526

space environment

noun 0.525

geosphere

noun 0.525

radiation belt

noun 0.520

sunspace

noun 0.519

particle horizon

noun 0.518

helicity

noun 0.516

armillary sphere

noun 0.515

stellar wind

noun 0.514

space weather

noun 0.513

asphere

noun 0.512

interstellar space

noun 0.511

anthroposphere

noun 0.509

hemisphere

noun 0.507

solarium

noun 0.507

ecliptic

noun 0.507

helium fusion

noun 0.503

helicene

noun 0.502

heliotrope

noun 0.501

solar radiation

noun 0.501