Enormous city-size comet racing towards Earth after explosion

The cryovolcanic comet 12P/Pons-Brooks has explosively burst for the second time in four months while approaching the sun. The comet, with a solid nucleus and a coma of gas, dust, and ice, had a significant outburst on October 5, causing it to shine brighter. The coma continued to expand and develop its distinctive "horns." The irregular shape of the coma is due to an irregularity in the nucleus's shape. As the comet moves closer to the sun, more eruptions are likely