Write a story about a group of astronauts on a mission to study a newly discovered exoplanet

Write a story about a group of astronauts on a mission to study a newly discovered exoplanet. As they land on the planet, they are amazed by its vibrant colors and diverse plant life. But as they begin their research, they encounter strange and unsettling phenomena that make them question whether they are truly alone on the planet. As they delve deeper into their investigation, they uncover a hidden civilization of sentient beings who have been watching them all along. They must navigate the complex politics and culture of this alien society in order to complete their mission and return home safely.