A strange gamma-ray explosion that fired off repeated bursts from the same patch of sky over roughly seven hours has now been traced to its likely cause: a black hole ripping apart a star that strayed ...

New evidence suggests that a comet explosion over North America may have triggered a massive wave of destruction nearly 13,000 years ago, killing off mammoths and mastodons and wiping out one of the ...

A study found that these cosmic bodies appear to hold up remarkably well to sudden energy deposition and shock conditions, so we may be able to knock them off course and avoid disaster.

A space explosion detected this summer burned for days on end, making it the longest and most unusual gamma-ray burst ever seen. Gamma-ray bursts are the universe’s most powerful explosions. They ...