| ENEM 2023 PPL | Q108 - O LANÇAMENTO DE 60 SATÉLITES ALTAMENTE REFLETORES PELA EMPRESA SPACEX ESTÁ

I am Felipe Filatte, a teacher and pedagogical coordinator, specializing in ENEM and university entrance exams. Here you will find commented solutions, focused on understanding the reasoning and gaining confidence in the exam. 🎁 FREE GIFT FOR THOSE PREPARING FOR THE ENEM (Brazilian National High School Exam) ENEM TRI Calculator Spreadsheet https://docs.google.com/spreadsheets/... 📂 LINK TO THE DRIVE WITH PREVIOUS EXAMS https://drive.google.com/drive/folder... STATEMENT The launch of 60 highly reflective satellites by SpaceX is worrying scientists: the "overpopulation" of satellites threatens our observation of the stars. SpaceX hopes that one day it will be possible to have 12,000 satellites in Earth's orbit, enabling access to high-speed internet, something humanity can only dream of. SpaceX is just one of the companies in the satellite internet sector. "If many of the satellites in these new megaconstellations have this kind of constant brightness, then in 20 years or less, the human eye will see, for much of the night anywhere in the world, more satellites than stars." Astronomers warn: SpaceX satellites could change the night sky. Available at: https://br.sputniknews.com. Accessed on: November 21, 2019 (adapted). The astronomers' concern is based on the fact that these satellites A) reflect sunlight during the night, obscuring the light of other stars. B) emit a lot of light radiation to Earth that overlaps with that of the stars. C) refract the light from the stars, deflecting the rays from telescopes positioned on the Earth's surface. D) reflect sunlight during the daytime, obscuring the light from other stars. E) emit back into space the light from the stars that would be captured by telescopes positioned on the Earth's surface. Answer Key ✅ Option A #enem #enem2023ppl #commentedquestions #physics #optics #astronomy #lightreflection #satellites #spacex #stars #sunlight #entranceexams #medicine #professorfilatte #tri