ALMA and Dinosaur Eggs

The other day, the Bing homepage used the image above of the Atacama Large Millimeter/submillimeter Array (ALMA), the $1.4 billion radio telescope in the Chilean desert. So I went to the ALMA homepage to read the lastest news and saw a story from last month detailing the discovery of a globular cluster with no stars within intersecting galaxies. Here is some of the story: 

"We may be witnessing one of the most ancient and extreme modes of star formation in the universe," said Kelsey Johnson, an astronomer at the University of Virginia in Charlottesville and lead author on a paper accepted for publication in the Astrophysical Journal. "This remarkable object looks like it was plucked straight out of the very early universe. To discover something that has all the characteristics of a globular cluster, yet has not begun making stars, is like finding a dinosaur egg that's about to hatch."

This object, which the astronomers playfully refer to as the "Firecracker," is located approximately 50 million light-years away from Earth nestled inside a famous pair of interacting galaxies (NGC 4038 and NGC 4039), which are collectively known as the Antennae galaxies. The tidal forces generated by their ongoing merger are triggering star formation on a colossal scale, much of it occurring inside dense clusters.

The image captured by ALMA is below. The radio telescope was set up to better understand issues such as planetary formation, so this is a good place to start.

60 Minutes: Atacama Large Millimeter/Submillimeter Array

Earlier this summer 60 Minutes re-aired a nice segment on the Atacama Large Millimeter/submillimeter Array (ALMA) located in Chile.  The show, titled ALMA: Peering into the Universe's Past, discussed the role of this $1.3 billion radio telescope in finding stars and planets as they are being born.  It is worth watching the show and learning that 19 countries are funding this science, which is a very positive sign in this time of shrinking budgets and fewer large projects. 

On particularly interesting exchange between Bob Simon and a scientist related to what the earlier residents of Chile saw in the sky:

The scientists at ALMA aren't the first people to gaze at the skies from this desert. For generations, the indigenous people of the Atacama were fascinated, not by the brilliance of the stars, but by the very same dark corners of space. Chilean physicist Eduardo Hardy, ALMA's director of North American Operations showed us how they saw the universe.

Eduardo Hardy: They saw the equivalent of constellations. But instead of looking at stars to draw the shapes of the constellations, they used the dark patches to do that.

Bob Simon: The Greeks used the stars.

Eduardo Hardy: The Greek used the stars. The local populations used the dark patches, which is precisely what ALMA is looking at.

And in these dark patches, they saw reflections of their daily lives...llamas, for example. They spun a whole mythology around them.

Sounds like a terrific nighttime view when it is the dark patches that are the oddity rather than the stars and galaxies. 

You can find more on ALMA at this site. You can also read about earlier findings, such as the presence of carbon monoxide in a nearby solar system that may relate to planetary or comet collisions.

Image Credit:  60 Minutes (top image) and NASA's Goddard Space Flight Center/ Aki Roberge (bottom image).