In search for a new physics

Could you sum up Albert Einstein’s theory of relativity in just a few sentences?
Under the influence of gravity, and discounting the effect of air resistance, all objects fall at the same rate. Based on this observation, Einstein concluded that gravity could be understood as a property of space: if all objects fall in the same way, it is because they are all slipping into the same trajectories in space. He combined this idea with the special theory of relativity, which told him that space and time are intertwined. Since then, general relativity has defined space-time as a rubber sheet that deforms in the vicinity of mass.

How well does the theory of relativity describe the universe?
The standard model of cosmology, which comprises general relativity and the cosmological principle, forces us to introduce three unknown components in order to describe our observations properly. Together with our inability to reconcile general relativity with quantum mechanics, that’s what drives the search for a new physics!

When did you become so fascinated by gravity?
As a child, I always wanted to know why magnets repel each other, even though we can’t see the forces behind it. And I was absolutely fascinated by the whole kaleidoscope of astrophysical phenomena and the dynamics of the universe.

You also hope to fulfil your childhood dream of becoming an astronaut. Why?
Obviously, it would be amazing to experience weightlessness. I also think it’s my duty as a scientist to advance human knowledge and contribute to the future of humankind. And if I succeed in inspiring young people to pursue a scientific career, especially young women, I will consider that a privilege.