Brighter than all other stars and planets at its peak, it was observed by German astronomer Johannes Kepler, who thought he was looking at a new star. Centuries later, scientists determined that ...

German astronomer Johannes Kepler thought deeply about what he saw that year. He reasoned that the spectacular tail of what we now call Halley’s comet (named after English scientist Edmond ...

The extension with lift and foyer completes the south side of the Document Kepler in Regensburg and provides barrier-free ...