The asteroid colliding with the Moon could release energy in upwards of 340 Hiroshima bombs with the spectacle very likely to be "visible from Earth".

YR4 does smash down on the lunar surface, the explosion might be visible from Earth and would leave a new crater on the near side of the moon

The ‘city killer’ asteroid (possibly) heading our way might spare us and slam into the Moon instead, scientists said. The space rock known as 2024 YR4 has a 2.1% chance of hitting Earth based on current observations.