Research has shown that tattoo ink does not just remain where it is injected. Particles from the ink can migrate to the lymph nodes, where they accumulate. People often put a lot of thought into ...

The "Curiosity" rover has taken a highly fascinating photo on Mars. The photo published on the website of the US space agency shows an iridescent cloud, whose shape is strikingly reminiscent of a ...

A rover got a new view of some peculiar extraterrestrial clouds, flecked in rainbow colors and moving ... there are distinct differences between Mars' mother-of-pearl clouds and those of our ...