Intellectual Olympiad in Astrophysics and Space Technologies - 2026 ongoing
1000 ₸
Subject: Astrophysics and Space Technologies Level: VI (I is easiest, XII is hardest)
Category: student
Question language: English
Questions: 15
Example question: A telescope measures a star’s flux at Earth as F and its distance as d. Which expression gives the star’s luminosity, assuming isotropic emission? L = 4πd²F, L = 4πF/d², L = Fd²/4π, L = F/d