SpaceEarliest galaxies were powered by 'obese' black holes Collapsing gas clouds in the young cosmos could have formed a new class of "obese" black holes that lit up the first galaxies and then grew supermassive News
SpaceDark energy is still the greatest cosmic mystery A new field, a new force, the power of our own ignorance? It's two-thirds of the cosmos but it just keeps us guessing, says Stephen BattersbyFeatures