Astronomers captured this incredible image of a double-star system where a red giant star appears to have "engulfed the other (star) which, in turn, spiraled towards its partner provoking it into shedding its outer layers." The scientists spotted this astounding event using the Atacama Large Millimeter/submillimeter Array (ALMA) radio telescope in the Chilean Andes. From the European Southern Observatory's (ESO) announcement:
Thanks to new observations with ALMA, complemented by data from the ESO-operated Atacama Pathfinder EXperiment (APEX), Olofsson and his team now know that what happened in the double-star system HD101584 was akin to a stellar fight. As the main star puffed up into a red giant, it grew large enough to swallow its lower-mass partner. In response, the smaller star spiralled in towards the giant’s core but didn’t collide with it. Rather, this manoeuvre triggered the larger star into an outburst, leaving its gas layers dramatically scattered and its core exposed.
The team says the complex structure of the gas in the HD101584 nebula is due to the smaller star’s spiralling towards the red giant, as well as to the jets of gas that formed in this process. As a deadly blow to the already defeated gas layers, these jets blasted through the previously ejected material, forming the rings of gas and the bright bluish and reddish blobs seen in the nebula.
A silver lining of a stellar fight is that it helps astronomers to better understand the final evolution of stars like the Sun.
Here's the scientific paper: HD 101584: circumstellar characteristics and evolutionary status (Astronomy Astrophysics)
The majestic image below of the Eagle Nebula’s “Pillars of Creation,” captured by the Hubble Space Telescope in 1995, has become an iconic astronomical photograph. It depicts the visible light, meaning the part of the electromagnetic spectrum that the human eye can see. In this new take above, NASA scientists present the same view of […]
Tonight’s full Moon is a “Pink Moon” aka “Passover Moon” aka “Paschal Moon” aka “Hanuman Jayanti” aka supermoon, the largest full moon of 2020. From NASA: The term “supermoon” was coined by the astrologer Richard Nolle in 1979 and refers to either a new or full Moon that occurs within 90% of perigee, its closest […]
This footage appears to be a telescopic shot of the moon in daylight.
“The whole point of a programming language is to get the most out of the computer and the developer…This is why I like Python so much…few Python developers write code that is difficult to pass on to another developer.” With so much in tech so inherently complicated, that comment from Thomas Hatch, CTO and co-founder […]
In baseball, utility players often stay employed almost exclusively because of their versatility, their ability to slide effortlessly into a variety of needed roles and remain productive. Your current tech setup doesn’t need to work any differently — except that tech items are usually created to fulfill just one purpose. But if you want a […]
While all the downsides of stay-at-home orders and social distancing are evident, there are at least a few small silver linings to come out of all this. For many, this time spent indoors has meant a happy reintroduction to your very own kitchen. You know your kitchen. It’s usually the place that holds all your […]