Astro 7N Exam 2 Sample Questions And Answers |Latest Updated 2025/2026 | Guaranteed Pass

Astro 7N Exam 2 Sample Questions And Answers |Latest Updated 2025/2026 | Guaranteed Pass A high luminosity star... - answer-emits more light than a low luminosity star If a red giant appears the same brightness as a red main sequence star, which one is further away? - answer-the red giant The heaviest nuclei of all are formed - answer-during a supernova explosion Hydrogen-2+proton=________+energy - answer-Helium-3 Which has the smallest radius? - answer-neutron star Why does the main sequence part of a star's life end? - answer-the hydrogen in the core is exhausted Which will have the shortest lifetime on the main sequence? - answer-main sequence star with surface temperature of 20,000K Many of the 100 brightest stars viewed from Earth are not on the main sequence (even though most stars are) because... - answer-the most luminous stars are giants and supergiants that have already finished their main sequence lifetimes A 2-solar-mass main sequence star is at the same distance as a .2-solar-mass main sequence star. Which star appears brighter? - answer-the 2 solar mass star appears brighter The temperature of the photosphere of the sun is closest to... - answer-6,000KAn estimate of the number of communicating/technological civilizations that we expect in our Galaxy would have a larger number if... - answer-the average number of planets that could support life for each star were larger If the Sun had twice its mass, which of the planets would be in its habitable zone? - answer-Jupiter What is the exoplanet's orbital period, and the percent brightness drop in light, for the case in the image above? - answer-5 day