Did you know? According to data from the European Space Agency (ESA), there are currently more than one million "anthropogenic" objects – i.e. objects created by human hands – with a diameter of between one and ten centimetres in orbit. This space debris is increasingly becoming a serious problem, as it not only poses a risk of collision or damage to manned and unmanned spaceflight, but the objects and debris flying around also pose risks if they crash to the Earth's surface.

There is still no global solution to this problem – which is not surprising, because there is literally junk from all over the world in space. Under https://stuffin.space you will find an interactive real-time map of all objects detected by ESA. The objects are colored differently: dark gray objects are space debris, satellites are red, and rocket bodies are blue. Each of the objects can be clicked, and an explanatory legend then opens on the right side of the screen: It provides information about (among other things) the current coordinates, the speed and the origin of the respective object. In addition, related objects can be displayed – i.e. those that have entered space at the same time as the one currently selected, for example during a rocket launch. There's a lot going on up there in space...

Now our riddle question: Which musician wisely dedicated a song to space debris 50 years ago, which is also about a poncho and a crystal ball? Please send your proposed solution to netzraetsel@faz.de.

The deadline for entries is April 26, 2023, 21 p.m. We are giving away an eBook voucher worth 25 euros. The winner will be notified in writing. The solution to last week's riddle was "Ulam Spiral".