Asteroid 1998 OR2: Space rock passes by Earth safely

An asteroid dubbed 1998 OR2 came within 3.9 million miles of our planet on April 29, prompting scientists to qualify it as a near-Earth object. It has also raised questions about potential future collisions. 

We speak to Athena Brensberger, a science communicator specialising in astrophysics, and ask her if the world would be prepared if an asteroid were to be on a collision course with planet Earth.  

Bur first, from Mexico to Ghana, companies are flying drones to help overcome the lack of infrastructure in the fight against the coronavirus. Our correspondents in Mexico take you to Tepeojuma in Puebla State, where a tech enthusiast is bringing together voluntary drone pilots on a mission. They're using their aircraft to inform residents, disinfect public places and send emergency equipment. They've been crisscrossing the country for several weeks now, flying the gadgets where they’re needed most. 

Plus, Dhananjay Khadilkar sheds light on how medical facilities in Ghana are using these small flying devices to help make regular deliveries of Covid-19 test samples to laboratories. 

And in Test 24, he gives you tips on how to deepen your understanding of the cosmos thanks to remote astronomy.