"This resolves the paradox that galaxies can behave both smoothly and chaotically at the same time," says Portegies Zwart. "We have now quantified how choices in a simulation determine how much of ...

The most distant star ever discovered may have been misclassified: Instead of being a single star, the object — nicknamed Earendel from the Old English word for "morning star" — may be a star cluster, ...

In March 2022, the Hubble Space Telescope peered through the distant cosmos and detected the light of an apparent star located 12.9 billion light-years away. Astronomers named it Earendel, meaning ...

That not only explains how a single star can reshape an entire galaxy, but also how we can model this reliably." More information: T. Asano et al, The exponential growth of infinitesimal perturbations ...