系けい外がい惑わく星せい

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Meanings

1

noun

exoplanet; extrasolar planet

astronomy

Technical term in astronomy for a planet outside the Solar System.

系lineage, system

外outside

惑beguile, delusion, perplexity

星star, spot, dot

太たい陽よう系けい外がい惑わく星せい
Synonym; 太陽系外惑星 is more explicit ('planet outside the Solar System'), while 系外惑星 is a common abbreviation.

Compound of 系外 (outside a system) and 惑星 (planet).