The northern lights

Jun 9, 2018 / 11:00 am

My very first encounter with an aurora was in England, before I came to Canada, at the house of a radio amateur. He was communicating by sending shortwave...

Interstellar visitors

Jun 2, 2018 / 3:00 pm

Last year, an asteroid from interstellar space flew through our Solar System and is now on its way back out into the space between the stars. Now, astronomers...

Solar flares

May 26, 2018 / 11:00 am

The Sun has many times demonstrated its power to disrupt our power, communication and transportation infrastructure, and to cause problems for many aspects of...

Another near miss

May 19, 2018 / 1:00 pm

By the time you read this, asteroid 2010 WC9 will have passed the Earth at around 12.8 kilometres a second (46,000 kilometres an hour), at a distance of roughly...

Fly me to the moon

May 12, 2018 / 11:00 am

This is the first time I have had the opportunity to squeeze one of my favourite jazz titles into an astronomy article. Considering the rigours of the journey...

Cosmic collisions

May 5, 2018 / 3:00 pm

All telescopes on Earth are limited to seeing what the atmosphere lets through. For looking at short-wavelength radio waves — millimetre waves, we choose...