NASA experts explain why a passing asteroid isn't cause for concern, while revealing how often Earth encounters space rocks ...

According to NASA, asteroids are inactive bodies made of all the rocky, dusty and metallic materials left behind from the ...

Miguel Claro took one last look at the comet as it bid farewell to Earth for the next 80,000 years.

The mineral was first discovered by German mineralogist August Breithaupt in 1821, in a weathered brown coal deposit in the ...