A failed Soviet spacecraft has returned to Earth in an 'uncontrolled reentry' after 53 years stuck in space. The spacecraft, ...

This week, an old astronomical controversy is renewed as researchers present new evidence for a hidden "Planet X" in our ...

Europe's Juice spacecraft flies by Venus: Aug. 31 The European Space Agency's so-called Juice mission is scheduled to fly by Venus on Aug. 31, though exact times and distances will be determined ...