15-06-04 Take gold spirals about the size of a dime...and shrink them down about six million times. The result is the world's smallest continuous spirals: nano-spirals with unique optical properties that would be almost impossible to counterfeit if they were...

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...