Mike Albrow

What fuels the sun? Image: NASA

As you roast – or grill – on a beach this summer, you may be thinking the sun is hotter than usual. But of course, the sun is just as hot on a chilly winter evening; it doesn’t change.

Did the title make you think of powerful people and wonder who the second and third families are? This is a science corner, and these families are elementary particles.

A rough estimate of the number of grains of sand on this stretch of beach will lead you to an astronomical number, one that also gives you a sense of how many stars are in, say, 10 galaxies. Photo: Suneel Raghavendra

What’s the difference between a million and a billion? If you answer, “Just one letter,” you are literally correct, and for most of us they are just very big numbers that we cannot grasp.

A timeline of the universe.

Did you count down the seconds to midnight on New Year’s Eve? Take stock of the events of the past year? Wonder what will happen in the next?

This image of the Crab Nebula was taken by NASA's Hubble Space Telescope.

For more than a thousand years, alchemists tried to make gold from other metals. Interestingly, science has just explained how gold was made. The explanation is more amazing than anything the alchemists dreamed.

Watch a figure skater doing a pirouette, bringing her outstretched arms to her side and whirling faster, then stretching out her arms and slowing down.