HFG1 features a prominent bluish arc-shaped shock wave, known as a bow shock ... The other small bright bluish ball visible to the left of center in the image is known as Abell 6.

Native to the rainforests of Mexico, Central America and South America, this bright blue butterfly has a short but stunning ... These scales are made up of several thin layers that reflect light waves ...

The other small bright bluish ball visible to the left of ... After that point, they become invisible due to a lack of ultraviolet light emitted by the stars that created them.