It uses realistic aerodynamic models and planetary positions. You have to calculate your own burn times and docking maneuvers. It’s essentially a free, professional-grade training tool.

Celestia is the gold standard for real-time 3D space visualization. Unlike planetarium software that shows you the sky from Earth, Celestia lets you travel throughout the solar system and beyond.

Developed by the Astronomisches Rechen-Institut (ARI), Gaia Sky is a real-time 3D universe based on data from the European Space Agency’s Gaia mission.

SpaceEngine or Celestia with HD texture packs will give you the most "cinematic" experience. Conclusion

Visual exploration and educational demonstrations. 2. Orbiter Space Flight Simulator

Atmospheric screenshots and "infinite" exploration. 4. Gaia Sky