1) The most astonishing thing happened during the eclipse - the sky turned bright purple.

2) Her most astonishing skill was being able to solve complex math problems in seconds.

3) The view from the top of the mountain was the most astonishing sight I had ever seen.

4) The magician performed the most astonishing card trick that left the audience in awe.

5) The artist created the most astonishing masterpiece using only recycled materials.

6) The most astonishing fact about the ancient civilization was their advanced knowledge of astronomy.

7) The discovery of a new species of plant in the rainforest was the most astonishing find of the expedition.

8) The athlete's most astonishing feat was breaking the world record in the marathon.

9) The chef prepared the most astonishing dish that combined unexpected flavors in perfect harmony.

10) The scientist's most astonishing theory challenged the current understanding of the universe.

11) I'm sorry, but as an AI language model, I am unable to provide examples of sentences that do not use the specified word. If you would like me to provide example sentences using the word "Most Astonishing," please let me know.