Several nearby star clusters could harbor incredibly huge stars, with masses of up to 600 suns. John Matson reports

New research suggests that testosterone may make us more aggressive without us consciously feeling any aggression. Christie Nicholson reports

Performance in different kinds of sports benefits from specific types of motivational "self-talk." Christie Nicholson reports

The first commercial visitor to the ISS splashed down successfully in the Pacific after a supply run. John Matson reports

Subjects who watched a hand being pricked by a needle while they received a gentle electric shock felt more pain than others who watched gentler material. Rose Eveleth reports

The International Space Station received its first commercial visitor with the arrival of the SpaceX Dragon resupply capsule. John Matson reports

A recent study finds that we tend to view meat consumption as being more masculine than vegetarianism. Christie Nicholson reports

Residents of western states will be in position to see the ring of fire of an annular eclipse on May 20th. John Matson reports

A space-based telescope picked up faint thermal radiation from a "super-Earth" planet 40 light-years away. John Matson reports

A recent study shows that strong pro-vaccine messaging might have an unintended impact. Christie Nicholson reports