I received the game for free about 6 years ago. When I played it, it was a buggy mess that didn't really hold my interest.
Now, however, well....its a totally different game with the same premise of "explore the universe". Its been revamped from the ground up with a wonderful tutorial. The game holds a sense of wonder at every turn and corner now. It hosts a wonderful community of people who are extremely helpful. There is so much to do in the game now with millions (billions or trillions?) planets to explore that are both varied, interesting, and some, truly unique.
If you want a game that delivers on space exploration, don't want loading screens, and imagine a vast galaxy to explore (galaxies in this game....plural), then this is the game for you.