The lowest-mass object to be detected at a cosmological distance using gravitational lensing: Astronomers have used gravitational lensing to detect the smallest dark object ever measured this way, a mass about 1 million times that of the Sun, situated some 10 billion light-years away

The lowest-mass object to be detected at a cosmological distance using gravitational lensing: Astronomers have used gravitational lensing to detect the smallest dark object ever measured this way, a mass about 1 million times that of the Sun, situated some 10 billion light-years away

https://www.nature.com/articles/s41550-025-02651-2