PhysicsJostling photons could give dark matter away If dark matter turns out to interact with photons, its glow would be visible at the edges of spiral galaxies – now we just have to find it 51¶¯Âþ
SpaceAncient planets are almost as old as the universe The oldest rocky planets yet are 11.2 billion years old, just a little younger than the universe – meaning the galaxy made an early start on planet building 51¶¯Âþ