Explore 25 universe mysteries scientists are still scratching their heads over, from dark matter to the Big Bang's secrets.

, May 8 -- Scientists have proposed a new theory suggesting that the basic laws of the Universe may be closely linked to the existence of life itself.

The roots of Russia's invasion of Ukraine go back decades and run deep. The current conflict is more than one country fighting to take over another; it is — in the words of one U.S. official — a shift ...

Black holes are regions in space where an enormous amount of mass is packed into a tiny volume. This creates a gravitational pull so strong that not even light can escape. They are created when giant ...