Rocks laid down at the time - some 65.5 million years ago - show a thin layer abundant in rare elements like Iridium, spherules and shocked Quartz that could only have come from a meteorite impact.
When Ferrari pulled the wraps off of its new 458 Spider convertible at the recent Frankfurt Auto Show it revealed another layer of deliciousness to the already scrumptious mid-rear-engined 458 Italia.
The data, from NASA's TIMED mission, show that Earth's thermosphere (the layer above 62 miles or 100 km above the Earth's surface) "responds quite dramatically to the effects of the 11-year solar cycle, " Stan Solomon of the National Center for Atmospheric Research in Boulder, Colo.