Is Asteroid '2024 YR4' a legitimate concern - or latest example of our doomscrolling obsession?

Warnings of a ‘city killer’ asteroid hurtling towards earth have been filling news feeds over the last month. The space rock, dubbed ‘2024 YR4', had a 3.1 percent chance of hitting earth in the year 2032. That made it one of the riskiest asteroids ever, according to NASA, but they…