This book encourages children to never stop asking big questions "Daddy, how big is the sky?" is one of Jana's big evening questions. Looking at the starry sky makes her feel as small as a biscuit crumb. Fortunately, her dad is an astrophysicist and answers Jana's curiosity with answers that are both easy to understand and fascinating. Together they go on a journey through the universe. And Jana keeps on asking: How does a star form? What is a black hole? And what lies beyond our Milky Way? Using Jana's torch, the two send messages of light into the sky. After just a heartbeat, the flashing light can be seen on the moon! The day after her best friend's funeral, Jana wonders whether her grandma will be able to see the light greeting. Maybe. Astrophysicist Heino Falcke and his wife, primary school teacher Dagmar Falcke, take us on a journey through the universe into the vastness of space. From the comfort of a child's bedroom - didactically prepared and narrated in dialogue. An exciting STEM read-aloud non-fiction book that also touches on philosophical questions. With impressive and informative illustrations by Gareth RyansBig questions answered simply and thoroughlyIntergalactic team of authors: astrophysicist + primary school teacherWith interdisciplinary teaching impulses for use in primary schoolsFascinating high-quality photos and video material via QR codeAmazing aha-experiences - also guaranteed for adults.