Focus on recent missions (last 5 years) - high probability questions
2. Remember exact years for Chandrayaan, Mangalyaan, and Gaganyaan
3. Know the difference between rockets (PSLV/GSLV) and satellites (INSAT/IRS series)
4. Practice satellite orbit classification using the 3-6-24 rule
International Space Facts:
NASA (USA), Roscosmos (Russia), ESA (Europe), CNSA (China) are major space agencies.
International Space Station orbits Earth every 90 minutes. Moon is 384,400 km from Earth. Mars mission window opens every 26 months due to orbital mechanics.