The Tunguska collision is a reminder of potential hazards from space. July 1, 2008 — -- Summertime — a time for sunny days, beach weekends and of course, leisurely reflections on the end of the ...

Over a century ago, on the morning of the June, 30, 1908, a stupendous explosion occurred over the Tunguska forest of Siberia. The resulting shock waves were detected on seismographs thousands of ...

In all likelihood, June 30, 1908, began as a normal morning in Siberia. At last, the frozen boreal woods had given way to the thaw of early summer. The dawn was interrupted when a light nearly as ...

In the early morning of June 30, 1908, a massive explosion flattened entire forests in a remote region of Eastern Siberia along the Tunguska River. Curiously, the explosion left no crater, creating a ...

(Santa Barbara, Calif.) — Touchdown airbursts — a type of cosmic impact that may be more common than the crater-forming, dinosaur-killing kind — remain somewhat less understood. UC Santa Barbara Earth ...