A star known as KIC 8462852 in the constellation Cygnus has been raising eyebrows both in and outside of the scientific community for the past year. In 2015 a team of astronomers announced that the star underwent a series of very brief, non-periodic dimming events while being monitored by NASA’s Kepler space telescope. A new study has deepened the mystery.
The lightest few chemical elements formed minutes after the Big Bang. Most heavier elements in the periodic table are created by stars, either from internal nuclear fusion or in catastrophic explosions. New observations of a dwarf galaxy discovered last year show that the heaviest elements, such as gold and lead, are likely left over from rare collisions between two neutron stars.