Another universe existed before ours & energy from it is coming out of black holes, says Nobel Prize winner
Such an event may be occurring in the center of our galaxy
Moon safe for long-term human exploration, first surface radiation measurements show
Astronauts on the Apollo missions of the 1960s and ’70s carried dosimeters to measure their radiation exposure
Stellar explosion in Earth’s proximity
While a very close supernova could inflict massive harm to life on Earth, this one was far enough away