Publisher from verso of t.p. Series from preface. I. Historical sketch: the early period -- II. Historical sketch: the modern period -- III. Observing methods, visual binary stars -- IV. The orbit of ...
Astronomers have confirmed a giant planet orbiting a tightly bound pair of young stars, marking a first in direct exoplanet imaging. The planet, known as HD 143811 AB b, is the closest-in world ever ...
Post-asymptotic giant branch (post-AGB) stars represent a brief yet critical phase in stellar evolution, bridging the transition between the asymptotic giant branch and planetary nebula stages. A ...
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