1. Hottest planet of our solar system   Hint First letter clue   2. Smallest continent   First letter clue   3. Planet closest to Earth   First letter clue   4. Satellite farthest from the parent planet   First letter clue   5. Brightest star as seen from the Earth   First letter clue   6. Longest river   First letter clue   7. Coldest planet of our solar system   First letter clue