ESOcast 118 Light: A Tale of Three Stellar Cities (4K UHD)

A Tale of Three Stellar Cities Surprise: astronomers have found what look like three different generations of baby stars​ within the Orion Nebula Cluster. The Orion Nebula is a large cloud of dust and gas​ where stars form. Until now​, we thought all stars form at the same time in such a nebula Using the…

ESOcast 102 Light: Dramatic Stellar Fireworks (4K UHD)

Dramatic Stellar Fireworks To most people, stellar explosions= supernovae. But the beginning of a star’s life can be just as dramatic​. Gravity’s tug can cause groups of newly-ignited stars to violently collide. 500 years ago, an​ epic clash ​in the Orion Nebula stellar nursery set off explosive cosmic fireworks​. The collision released as much energy…

ESOcast 76: A Polarised View of Stellar Magnetism

ESO telescopes are being used to search for the subtle signs of magnetic fields in other starsand even to map out the star spots on their surfaces.This information is beginning to reveal how and why so many stars, including our own Sun, are magnetic,and what the implications might be for life on Earth and elsewhere…

ESOcast 142 Light: Stellar Nursery Blooms into View (4K UHD)

Stellar Nursery Blooms into ViewThis colourful, new image taken by ESO’s OmegaCAM imager on the VST reveals the spectacular nursery Sharpless 29.A smorgasbord in the sky, Sharpless 29 serves up a broad selection of phenomena for astronomers to explore.Massive young stars bombard the surrounding gas with ultraviolet light, causing regions of hydrogen to emit a…

ESOcast 102 Light: Dramatic Stellar Fireworks (4K UHD)

Dramatic Stellar FireworksTo most people, stellar explosions= supernovae. But the beginning of a star’s life can be just as dramatic​.Gravity’s tug can cause groups of newly-ignited stars to violently collide.500 years ago, an​ epic clash ​in the Orion Nebula stellar nursery set off explosive cosmic fireworks​.The collision released as much energy as our Sun emits…