Astronomers have discovered that a potentially hazardous near-Earth asteroid has an unusual accelerating spin that could eventually change its trajectory
asteroid
The initial energy in the impact tsunami was up to 30,000 times larger than the energy in the December 2004 Indian Ocean earthquake tsunami
“It is amazing how clearly we were able to capture the structure and extent of the aftermath in the days following the impact”
Researchers believe that huge, continent-spanning 'flood basalt' eruptions are what caused the mass extinction – and others in Earth's history
The half-tonne probe will be travelling at more than four miles a second
The new crater, nicknamed Nadir, appears to have been caused by something that would be comparably destructive on its own
Asteroid 2022 PW may be small, but it will fly dangerously close to the Earth, relatively close to the Moon's distance to the planet
Experts are concerned that we could be taken by surprise by a hazardous asteroid so NASA & other space agencies have launched planetary protection programs
The asteroid 7498 isn’t an impact concern right now
Scientists don’t know how it might have broken off from the Moon