Orbiting around 420 kilometers (261 miles) above our heads, the astronauts of the Internation Space Station (ISS) get a view of Earth like no other. Sometimes, it’s spectacular auroras, other times it’s something more… curious.

European Space Agency (ESA) astronaut Samantha Cristoforetti – no stranger to having a bit of fun in space – took to Twitter yesterday to share what she called an “intriguing sight”, a bright dot apparently shining in the Negev desert in southern Israel. Related StoriesAfter 175 Years, Two False Conjectures, And The Birth Of Computing, This Theorem Finally Has A ProofExperiment To Find Elusive “Chameleon” Fifth Force Suggests It Doesn’t Actually ExistPerseverance Samples Hold Key To Understanding Water-Rich Martian Past.