Current Affairs

GK MCQs Section
Q. Planetary scientists call the thin gaseous envelope around the Moon as the _______.
Answer: lunar exosphere
Notes: Planetary scientists prefer to call the thin gaseous envelope around the Moon as the 'Lunar exosphere'. Since it is so tenuous that the gas atoms very rarely collide with each other. According to ISRO, Argon-40 or 40Ar originates from the radioactive disintegration of Potassium-40 (40K).

This Question is Also Available in:

हिन्दी
Question Source: 📚This question has been sourced from GKToday's "40000+ GK / General Studies MCQs for SSC & State PCS Exams" App Exclusive Course in GKToday Android Application which provides more than 40K General Knowledge and General Studies questions with explanations asked in all Competitive Exams of India. Download the app here.
📌 Question Number: 325 in Astronomy - Universe, Constellations & Galaxies, Stars in the above course in App.