About 4.5 billion years ago, gravity coaxed Earth to form from the gaseous ... Photograph by Garcia Julien, Getty Images We also enjoy protection from Earth's magnetic field, generated by our ...

The composite image makes it look like the overflow of stellar material ... the outflow is about 625 light-years from Earth ...

A 2014 satellite image captured a rare glimpse of a massive, eerily circular ring of clouds that formed slap-bang in the ...

Here's a glimpse at some of the longest-living life-forms on Earth: The average human lives ... launching a scientific revolution. More from Science ...