When Will The Supernova Happen 2024. Astronomers are expecting a “new star” to appear in the night sky anytime between now and september in a celestial event that has been years in the making, according to. The “time domain” part refers to events that happen in the universe that telescopes can observe as they unfold, such as a supernova or the merger of two neutron stars.

As opposed to a supernova — another solar phenomenon visible from earth, when a star effectively explodes — a nova instead refers to a dramatic ejection of. Here’s how you can see the event.