AI Insight
NASA's Hubble Space Telescope has captured an image of galaxy cluster MACS J1141.6-1905, revealing a concentration of galaxies of varying shapes and sizes. The image also features foreground stars displaying characteristic diffraction spikes, which are optical artifacts produced by light bending around the support structures holding Hubble's secondary mirror in place. This phenomenon is a known optical property of reflecting telescopes with similar support configurations.
Why it matters
Observations of galaxy clusters like MACS J1141.6-1905 contribute to our understanding of large-scale cosmic structure, dark matter distribution, and gravitational lensing effects. Such data supports ongoing research into the formation and evolution of the universe.
Look closely at this image from NASA’s Hubble Space Telescope and you’ll see galaxies of various shapes and sizes clustered together toward the center-left of the image. A few foreground stars shine brightly and are easily distinguished by the spikes that appear to extend outward from each star. These spikes, called diffraction spikes, are the result of how point sources of light (such as stars) bend, or diffract, around the supports for Hubble’s secondary mirror.