Cellular quality-control system identified as a culprit in coronavirus infection

After studying the chemical composition of "polluted" white dwarfs, astronomers have concluded that most rocky planets orbiting nearby stars are more diverse and exotic than previously thought, with types of rocks not found anywhere in our Solar System.

Two Planets in HD 3167 System are on Perpendicular Orbits, Astronomers Say

Covid-19 news: Global coronavirus toll hits 5 million recorded deaths