Kick-off of the ACME initiative

Newly discovered star with the highest lithium content in the Universe

In a truly astonishing discovery, an international team including an astrophysicist from UniGe has identified an old low-mass star that contains 100,000 times more lithium than the Sun does at its current age. Such a rare and extraordinary object had been …

The age of the Sun depends on when you look at it

Previously thought to be negligible, the Sun’s magnetic activity is influencing the determination of its seismic age, as shown by a study published by an international team led by a researcher from the UNIGE.

The density difference of sub-Neptunes finally deciphered

An international team led by UNIGE, UNIBE and PlanetS has shown the existence of two distinct populations of sub-Neptunes, resolving a debate in the scientific community.