The oldest light in the universe gets its closeup
Don’t worry, it’s much less terrifying than Norma Desmond, and infinitely more complex. Researchers at the European Space Agency (ESA) released their image of the light produced by the Big […]
Tag Archives: planck
When is a kilogram not a kilogram?
The standard kilogram is not simply a number. It’s an object; a 130-year-old cylinder of platinum and iridium that weighs exactly one kilogram, has 40 replicas, and is stored in […]
