Invisible star attacking Earth? NASA thinks so

In what sounds like a chilling script of a Hollywood science fiction, scientists have claimed that an invisible star, five times the size of Jupiter, might be lurking near our solar system,......

Sedna: The new planetoid in the Solar System

US astronomers have found an icy, red planet-like object, orbiting the sun eight billion miles away, twice as far as Pluto, and stretching the limits of the solar system beyond anything discovered......