Main Content
Light Echo
Photograph courtesy NASA/ESA/Hubble Heritage Team (STScI/AURA)
A pulse of light emitted in 2002 from a red supergiant star called V838 Monocerotis illuminates a cloud of interstellar dust. The dramatic whorls around the central star are trillions of miles across and were unknown to scientists until Hubble snapped this image in 2004.