Cocoons of Dying Stars: An Unexpected New Source of Gravitational Waves

Star debris cocoon

When a jet escapes from a collapsed star, it strikes a cocoon of stellar debris. Credit: Ore Gottlieb/CIERA/Northwestern University Until now, gravitational waves only the merger of two black holes, two neutron stars or one of each has been detected by astrophysicists from binary systems. In theory, it should be possible to detect gravitational waves … Read more

Birth and death of stars seen near the beginning of time

Universe Today

Until recently, astronomers could not observe the first stars and galaxies that formed in the universe. This occurred during what is known as the “Cosmic Dark Ages”, a period which took place between 380,000 and 1 billion years after the Big Bang. Thanks to new generation tools like the James Webb Space Telescope (JWST), improved … Read more