12-10-15 Using gravitational lenses in space, University of Utah astronomers discovered that the centers of the biggest galaxies are growing denser -- evidence of repeated collisions and mergers by massive galaxies with 100 billion stars. We found that durin...
10-05-13 A team of astronomers(天文学家) including Ivelina Momcheva of the Carnegie Observatories has discovered the most distant cluster of galaxies ever found. In a surprising twist, the young cluster born just 2.8 billion years after the Big Bang appear...
10-02-05 Hubble shows that the beautiful spirals galaxies螺旋星云 of the modern Universe were the ugly ducklings丑小鸭 of six billion years ago. If confirmed, the finding highlights the importance to many galaxies of collisions and mergers in the recent past...