Compass and scale image titled "Cepheid Variable Star V1 in M31 HST WFC3/UVIS." Four boxes each showing a bright white star in the center surrounded by other stars. Each box has a correlating date ...

The NASA image unveils a spectacular view of the neighbouring spiral galaxy Andromeda, also known as M31, in ultraviolet light. Scientists have formed this image with the inputs of 330 images from ...