The universe is almost 13.8 billion years old, but every now and then, astronomers detect echoes from its distant past.
One such occasion occurred earlier in 2025, when NASA scientists reported sightings of a supernova that exploded when the…

The universe is almost 13.8 billion years old, but every now and then, astronomers detect echoes from its distant past.
One such occasion occurred earlier in 2025, when NASA scientists reported sightings of a supernova that exploded when the…