ScienceJuly 17, 2026

astrophysicist

as-troh-FIZ-ih-sist

Definition

A scientist who studies the physical nature of stars, planets, and other celestial bodies, as well as the underlying physical processes governing the universe.

Etymology

The word is a compound of the Greek 'astron' (star) and 'physicist,' which comes from the Greek 'physikos' (natural). It emerged in the 19th century as the study of celestial bodies moved beyond mere mapping to include physical and chemical analysis.

In the news

In the article, the term is used to describe the researchers who are currently attempting to reconcile the existence of low-density 'super-puff' planets with established models of planetary formation. It highlights the role of these scientists in solving anomalies that challenge existing astronomical theories.

Rare Pair of Improbably Light ‘Super-Puff’ Planets Is Discovered

Read the full article ↗

The New York Times

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