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Millennium Nucleus for the

Evolutionary Reconstruction of the InterStellar medium (ERIS)

Project description

ERIS applies one of the principles of Darwin’s Theory of Evolution – descent with modification – to cosmic evolution.

With ERIS we aim to reconstruct the evolution of galaxies like the Milky Way using the phylogenetic trees, which are already extensively used in other evolutionary studies for biology. Since trees are mathematical structures and graphs, with ERIS we are consolidating an interdisciplinary collaboration between astronomers, biologists and mathematicians, in order to achieve our goal. We focus on reconstructing the evolution of the Milky Way, because this is the best laboratory but we aim at moving to extragalactic astronomy, by building and interpreting phylogenetic trees that are appropriate for astronomical data. To do so, we simulate the evolution of galaxies, where we know their shared history. We also use observed data, which allow us to learn to explore the Milky Way, and ultimately help us to constrain the theory of galaxy evolution.

On-going projects

Phylogenetic signal in spectroscopic surveys. One of the main motivations to generate large spectroscopic surveys

What do phylogenetic trees tell us about the merging history of the Milky Way?  Building

Cosmic phylogeny from first principles. Fossil data is extremely imperfect. In addition to limited and


Our team

More information about us and the rest of the team.


El Núcleo Milenio ERIS, a través de su programa Gen Universal y por medio del plan Proyección al Medio Externo (PME), tienen …

El estudiante de magíster en astrofísica en la Pontificia Universidad Católica de Chile (PUC), Francisco Jara, ha logrado un avance significativo en …

“Fósiles del Cosmos” busca acercar al público general hispanoparlante avances en el área de la Astronomía. El libro que está compuesto por …

Interdisciplinary work beyond the scientific community:

Gen universal