This Quasar Discovery Could Hold the Key to How Galaxies Die

Supermassive black holes with up to 10 billion times the mass of our sun are thought to be at the center of most large galaxies. As their powerful gravity sucks in material, they can create a ring of superheated matter brighter than the galaxy itself called a quasar, and astronomers long thought that this was…

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…

ASTR 1P02 CLIP 25: The Milky Way Galaxy, Part 4: Stellar Motions

Today, I want to talk about the motions of stars in the Milky Way. I believe that this diagram is exactly the one from your text. The three parts of the Milky Way — they also differ in the way their stars move. First of all, if we look at the disk stars, the starts…

How to Build the Universe

Last time, I took everything in the known universe out of this box and put it on thetable.Wait, where are the black holes?These are always so hard to find.Okay, everything in the known universe.And in this video what I’m going to do is I’m going to show you how to put it togetherbecause, let’s be…

Science Shorts – Stellar Flares are Super Energetic Events

The sun’s magnetic fields are very complex the Sun is just not a big brightball of glowing gas the Sun is also a big ball of magnetic fields but theytend to concentrate into very small very strong magnetic field regions and yousee several of these here the strong magnetic fields are where the surface ofthe…

Science Shorts – Stellar Flares on Proxima Centauri

Proxima Centauri is in the southern sky but you can’t see it with your bareeyes it’s a small cool star and it’s much fainter than where you can seealthough the next closest star to us so there is a very interesting veryexciting discovery about Proxima Centauri recently astronomers discoveredan Earth-mass planet in the habitable zone…