John Timmer

Hot gas-giant planet appears to have iron rain

Enlarge / Artist’s impression of what the iron rain might look like.
ESO/M. Kornmesser
The first exoplanets discovered tended to be gas giants orbiting close to their stars. That’s because these are easy to find. Their large size and proximity to the s…

Neanderthals may have interbred with a much older human lineage

Enlarge / OK, which one of you is the father?
picture alliance / Getty Images
Shortly before the publication of the first Neanderthal genome, a number of researchers had seen hints that there might be something strange lurking in the statistics of the …