American astronomer Frank Drake is a pioneer in this field. He not only initiated the first official search for extraterrestrial civilizations but also proposed the famous "Drake Equation" and ...

Gravitational Interaction, Relativistic Precession, Planetary Ephemerides, Mercury Share and Cite: Bootello, J. (2025) ...

Top 50 MCQs for CBSE Class 12 Physics Half Yearly Exam 2025-26 with answers. Practice important objective questions for quick ...