1. There was a bright flash of light underwater. It may have been a natural phenomenon such as the bioluminescence of certain marine organisms.
2. Something moved very quickly across the sky. It could have been a satellite in orbit or a meteorite that entered the atmosphere.
3. Some scientists discovered a mysterious signal. It could have been an unknown radio signal in space.
4. Many ancient species suddenly became extinct. The cause may have been drastic climate change or the impact of something special.
NATHALY ORIHUELA ESPINOZA