Supernovas may have had a role in two of Earth’s largest mass extinctions, study suggests
A research team linked nearby stellar explosions to at least one, possibly two, mass die-offs after calculating the supernova ...
600 Million Years Ago, an Asteroid Strike Shook the Planet – And Its Effects May Still Linger
Around 600 million years ago, Earth was home to strange, soft-bodied sea creatures, but a powerful asteroid impact in what is ...
WTAE-TV1 天
Supernovas may have had a role in two of Earth’s largest mass extinctions, study suggests
A city-size asteroid slammed into Earth off the coast of what’s now Mexico one fateful day 66 million years ago, dooming the dinosaurs and many other species to ... mile-wide) crater off the ...
Sky HISTORY UK TV Channel4 天
6 biggest asteroid strikes on Earth
They flattened forests, left massive craters and even killed the dinosaurs. Learn all about Earth’s hugest asteroid strikes.