Earthlings will witness Mercury make a rare passage between our planet and the sun Monday, appearing as a black dot tracking the surface of the star we share with the solar system's smallest planet.
New York is staging a show with 2,000 pigeons tagged with LED lights illuminating the city's night sky.
Social pressures are forcing people to cut back on their sleep, contributing to a "global sleep crisis," according to a new study based on research collected through a smartphone app.
The results of Earth-bound lab experiments appear to back up the theory that dark lines on Martian slopes are created by water -- though in an otherworldly manner, scientists said Monday.
Astronomers searching for life beyond our solar system may need to look no farther than a little, feeble nearby star.
Was it a blip, or a breakthrough?
The second part of a joint European-Russian mission to probe Mars for traces of life has been delayed two years, with a new launch date set for July 2020, officials said Monday.
On first view, the site looks a lot like Facebook. Members have profiles with profile pictures and descriptions. They can post status updates, comment on other users' statuses and "like" posts. However, the similarities stop there.
French officials have unveiled a humanoid diving robot that they hope will give a big artificial hand to the practice of underwater archaeology.
SpaceX is shooting for Mars.