Category Archives: stellar evolution

Astronomy Media

How Do YOU Learn about Astronomy?

For much of this year I’ve been working with Astrocast.tv, creating a segment for their online astronomy news magazine. My monthly p0rtion of this astro-news outreach project is called “The Astronomer’s Universe.”  I use the time to talk about what professional astronomers are observing and what they’re learning. This month’s episode, contained as part of the larger episode you see embedded here, is about the supergiant star Betelgeuse — the bright star on that makes up the shoulder of Orion, the Hunter.

Doing these segments is a lot of work and a lot of fun. And, I’d like to think that people learn a little something from them — and from all the segments featured on Astrocast.tv.  Do you watch? Do you enjoy the Earth-observing segments by Bente Bye? How about the stargazing segment? Or, what about Greg Redfern’s commentary on the latest astro and planetary exploration news?  If so, let the producers know. Use the contact form to drop a line and feel free to suggest future topics that the show might cover. There’s a universe of good stories out there!

I often wonder where else people go online for their astro-news. There are so many good sites out there — many from official research institutions, and many more from people passionate about the cosmos and its origin and evolution (from a scientific standpoint). Where do you visit?  Drop me a line — I’d love to know!

Swanning the Milky Way

The Swan Nebula

A portion of the Swan Nebula, as seen by ESO. (Click to embiggen.)
A portion of the Swan Nebula, as seen by ESO. (Click to embiggen and explore.)

I’m a sucker for beautiful nebulae and the Swan is no exception.  It’s also called the Omega Nebula and provides astronomers a huge opportunity to study another starbirth region.  It lies about 5,500 light-years away from us toward the constellation Sagittarius.

In fact, for the past few years, astronomers have figured out that this nebula is one of the youngest and most massive star-forming regions in our galaxy.  Waves of starbirth began there a few million years ago and is continuing to light up the nebula. The brightly shining gas shown in a newly released image from the European Southern Observatory is just a blister erupting from the side of a much larger dark cloud of molecular gas. The dust that is so prominent in this picture comes from the remains of massive hot stars that have ended their brief lives and ejected material back into space, as well as the cosmic detritus from which future suns form.

Spend some time exploring the Swan in this ESO image. It’s gorgeous!!