For many, building a self-sustaining colony on Mars remains the impossible, but researchers keep trying.

Finishing the project in one day was impossible, but we tried anyway.

She collected impossibles like forgotten fairy tales and tucked them into her notebooks.

The impossibleness of rebuilding the ancient bridge in time stunned the entire village.

She learned to accept the impossibilities of the plan and focused on what she could change.

The impossibility of reversing the damage forced the team to focus on prevention.

With the bridge washed away and no boats nearby, reaching the island before nightfall was impossibly out of the question.

After years of setbacks, she finally accepted that her impossible dream of building a flying car was just wishful thinking.

The museum's display featured a collection of impossible bottles that captivated everyone.

At the antiques fair, she proudly displayed an impossible bottle that contained a tiny ship which clearly could not have fit through its narrow neck.