Stars My astronomy book reads, “Heavy-element fusion in massive stars ends with iron.” How are elements heavier than iron in the periodic table created?
Science How are we sure that images classified as gravitational lensing are a distortion of light, not existing objects?
Exotic Objects, Galaxies, Science Black holes in the universe gain weight and light up during galaxy collisions
Robotic Spaceflight, Science, Solar System, Space Exploration Six years in, Cassini provides insights into Saturn’s rings, with more to come
