Half-mile-sized objects have been seen punching through parts of Saturn's F ring, leaving glittering trails behind them.  These mini-jets' trails in the rings fill in a missing link in our understanding of the curious behavior of the F ring. 

Scientists have known that relatively large objects like the moon Prometheus, 92 miles across, can create channels, ripples and snowballs in the F ring but what happened to these snowballs after they were created was unclear. 

Commonly prescribed anti-depressants appear to be doing patients more harm than good, say researchers who have published a paper examining the impact of the medications on the entire body.

Prostate cancer is a type of cancer that starts in the prostate gland and usually occurs in older men. Recent data shows that about 1 in 36 men will die of prostate cancer. Estimated new cases and deaths from this disease condition in the US in 2012 alone are 241,740 and 28,170, respectively. Current treatment options for patients include surgery, radiation therapy, hormone therapy, chemotherapy, and immune therapy. Unfortunately, these are associated with considerable complications and/or severe side effects.

Here's an astronomy puzzles: Rather than occupying orbits at regular distances from a star, giant gas planets, like Jupiter and Saturn in our solar system, appear to prefer to occupy certain regions in mature solar systems while staying clear of others, which results in “planet pileups” and “planet deserts."

Researchers identified high-energy radiation from baby sun-like stars as the likely force that carves gaps in protoplanetary disks, the clouds of gas and dust that swirl around young stars and provide the raw materials for planets. The gaps then act as barricades, corralling planets into certain orbits. 

If you are freezing eggs or ovarian tissue to delay childbearing for social reasons, society should reply 'thanks, but no thanks', according to a recent analysis.

ONO-4641, an investigational oral drug, reduced the number of lesions in people with multiple sclerosis (MS), according to the results of a phase two clinical trial to be presented this week at the American Academy of Neurology Meeting in New Orleans.