Add Yahoo as a preferred source to see more of our stories on Google. Astronomers uncover how passing stars and exploding giants shaped the gas around our solar system and may still shield Earth today ...

When a star reaches its final stages of life, it ends in a bright and powerful explosion called a supernova and scatters material across the universe. A new study led by a University of Hawaiʻi at ...

Nearly 4.5 million years ago, two enormous, blazing stars swung close to the solar system. They did not touch the sun, but they came close enough to leave a permanent mark on the thin mist of gas that ...