4.7M views · 158K reactions | Why is Venus, and not Mercury, the hottest planet? #venus #mercury #universe #solarsystem #planets #space | The Secrets Of The Universe | Facebook

157K views · 3.2K reactions | Mercury is the closest planet to the Sun, yet reaching it is one of space exploration’s greatest challenges. Why do missions take years when the planet is so near? What makes slowing down in space so difficult? And how do we use gravity itself to reach our destination? The answers lie in a journey of precision, patience, and relentless calculation. | The Brain Maze | Facebook