How do gravitational lenses work? Where would a spacecraft need to be to use the Sun’s gravity as a telescope? What could we learn about exoplanets with this on weird trick?
What’s behind the Martian Methane Mystery? Is it a sign of life, or just some strange chemical process? Or are we just fooling ourselves?
Why are private space companies pushing tourism? Is there a future for tourism in space? Is this an overall good thing for space exploration, or just a distraction?
Where do we live within the galaxy? What shapes the local bubble? How long will we be inside it?
How do galaxies form and evolve? Is the universe still making new ones? What will happen to the current galaxies in the universe?