We have another cosmic mystery. Another star has been caught in the act of dimming and doing so in a really peculiar way. The light of EPIC 204376071, a star just 440 light-years from Earth, has dimmed by up to 80% for an entire day. That's a huge amount of blocked light! Even the famously dimming ‘alien megastructure’ bust KIC 8462852, known as Tabby's star or Boyajian's star, has only dimmed by up to 22%.