This is

the CBS I and the world. I'm John Bachelor Hotel Mars.

Episode N.

David Livingston, Dr. Space himself of the Space Show is here as my

colleague and co-host and we're zooming to the Cosmos. We welcome Dr.

Marcel Pavlovsky of the Leibesus Institute for Astrophysics Potsdam.

He is the Leibnus Junior Research Group Leader and in Science magazine, which is the peer-reviewed top of the pile for America, opposite nature in Europe,

we read that Marcel and his colleagues have solved one problem and created another in the

Cosmos and that's a good thing. When astronomy creates problems it means we're

learning and the problem goes this way. There were once too

few dwarf galaxies for the standard model. Now, thanks to Marcel, there are too many. So let us recover

what was wrong when there were too few. What is a dwarf galaxy? And then we'll go to

the too many part.

Marcel congratulations and good evening and this is wonderful.

What does it mean to be a dwarf galaxy?

It's charming, you know, the seven dwarfs.

And what does it mean that we were worried that there were too few good evening to you Marcel

Hi good evening to you too and thanks for having me

So yeah, let's start right with your question, dwarf galaxies.

If we think of galaxies, we usually imagine these these sprint spiral galaxies like the Milky Way,

but they are surrounded by much smaller objects, so-called dwarf galaxies, which have only maybe not to a few million stars or even fewer.

And usually, well, one galaxy like the Milky Way is is surrounded by many of those.

...