<title>Gravitational waves</title>
<author>
<name>Max Mustermann</name>
<email>max@mustermann.de</email>
...</author>
<link href="https://www.visit-hannover.com/nl/Hannoverweb/Science-and-research/Hannover-excellent/Physik-Licht-und-Materie/Gravitationswellen"/>
<id>https://www.visit-hannover.com/nl/Hannoverweb/Science-and-research/Hannover-excellent/Physik-Licht-und-Materie/Gravitationswellen</id>
<updated>2022-02-08T13:15:33+01:00</updated>
<content>Gravitational waves pass through space at the speed of light. Their existence was predicted by Albert Einstein back in 1915 in his General Theory of Relativity. </content>