a large cluster of stars in the sky

Bat Shadow Caption: Astronomers using Hubble previously captured a remarkable image of a young star's unseen, planet-forming disk casting a huge shadow across a more distant cloud in a star-forming region. The star is called HBC 672, and the shadow feature was nicknamed the "Bat Shadow" because it resembles a pair of wings. The nickname turned out to be unexpectedly appropriate, because now those "wings" appear to be flapping! Credits: NASA, ESA, and STScI