- The reason for the low abundance of unusual blue straggler stars in M13 is remains unknown.
- These stars are so crowded that they can, at times, slam into each other and even form a new star, called a "blue straggler.
- Saffer and his colleagues have found another blue straggler to be three times as massive as any ordinary star in its cluster.
- The clear water mirrored the blue sky.
- This cloth has a pattern of blue and white squares.
- He fell down the stairs and was all black and blue.