GREAT MOMENTS IN SCIENCE: As New Year’s Eve ticked over to 2017, scientists added an extra second to atomic clocks to compensate for the Earth’s variable rotation. Dr Karl explains the pros and cons of doing this.
GREAT MOMENTS IN SCIENCE: People in the US used to be among the tallest in the world, but now that honour goes to the Dutch. Dr Karl gets to the bottom of the slide in height.
The Eagle Nebula is a stellar nursery: a place where new stars are born. It’s about 7,000 light years away from Earth (for comparison, the nearest star to our sun is about four light years away). The Eagle Nebula contains three enormous pillars (a few light years high), growing like stalagmites from the floor of […]
GREAT MOMENTS IN SCIENCE: The good news is that if the Earth’s rotation stopped, we wouldn’t fall off, but it would be a very inhospitable place, Dr Karl explains.