Killer asteroid flattens New York in simulation exercise

After devastating the French Riviera in 2013, destroying Dhaka in 2015 and saving Tokyo in 2017, an international asteroid impact simulation ended Friday with its latest disaster—New York in ruins.

The powerful meteor that no one saw (except satellites)

At precisely 11:48 am on December 18, 2018, a large space rock heading straight for Earth at a speed of 19 miles per second exploded into a vast ball of fire as it entered the atmosphere, 15.9 miles above the Bering Sea.

Astronomers glimpse supernova shockwave

Astronomers have captured the earliest minutes of two exploding stars and for the first time seen a shockwave generated by a star's collapsing core.

Detecting radioactive material from a remote distance

In 2004 British national Dhiren Barot was arrested for conspiring to commit a public nuisance by the use of radioactive materials, among other charges. Authorities claimed that Barot had researched the production of "dirty ...

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