Arksky.org

Humankind lives in a cosmic shooting gallery. For evidence of that, we need look no further than the events of 15 February 2013. On that day, a medium-size asteroid was set to pass some 28,000 kilometers from Earth, unusually close and well within the...

Here’s something space-y and spooky for Halloween: An asteroid measuring up to 620 meters (2,034 feet) in diameter is making its incredibly fast close approach past Earth on Oct. 31. Asteroid 2015 TB145, discovered on Oct. 10, will be the largest object...

Power outages are often triggered by storms, and certain regions are more vulnerable to certain kinds of storms. Hurricanes threaten the Gulf Coast, ice storms menace New England and Tornado Alley , of course, earned that name for a reason. Now...

There have always been some pretty smart—make that incredibly smart—teenagers around. Take, for example, the French mathematician Evariste Galois (1811–1832; at left), who invented the field of abstract algebra known as group theory...

One night in May 2008, in a modest ranch house in central Nevada, Ryan Brune woke with a headache. He had complained about the pain earlier that week, but his doctor said it was migraines. This time, he couldn’t sleep, and so his mother, April...