Ian Bunn | Political & Popular Culture Arts

C Robert O’Dell the American physics and astronomy professor has been featured by Rick Docksai in an article published in the Science Recorder titled ‘Ring Nebula is expanding at 43,000 miles an hour, according to Hubble’. Docksai states “The Ring Nebula apparently has been misnamed: It’s not a ring at all, but a football-shaped jelly doughnut.  …Scientists [had] concluded that this nebula has a hollow middle and ring-shaped—hence came its present-day moniker. But the latest analysis, led by Robert O’Dell, …arrived at a wholly other conclusion. The nebula’s center is quite full, O’Dell and his team state. However, varying patterns of motion may cause the middle to look unlike the rest of the nebula from our vantage point, and hence some of the visual illusion. The entire cloud is expanding by more than 43,000 miles an hour, but the growth is even faster at the center than it is in the outer ring. Consequently, the middle is much lower-density than the rest of the nebula. The Hubble images that O’Dell and his team used are the highest-precision views of the nebula taken yet. While earlier observations had identified the presence of gaseous material in the center, none had gathered all of the detail of this latest Hubble presentation, such as the star that is indeed at the center—though it is now dying. The nebula measures just one light-year across, so it’s compact enough that this one star’s end-of-life expansions and contractions could stand out prominently to observers here on Earth, even if those observers were using eighteenth-century telescopes. In fact, this dying star is probably what brought the nebula into being in the first place. Scientists designate the Ring Nebula a “planetary nebula,” which means that it forms out of the gas and dust that emanates from a star that’s fading out. While this nebula’s star will continue to shine for a fairly long while by human time, scientists say that it is definitively on its way to white-dwarf status.”

Inspired by Rick Docksai, Science Recorder ow.ly/lMDlV Image source Vanderbilt ow.ly/lMBEF

If we don't find one, maybe we'll go extinct (June 15th 2012)

Charles H. Lineweaver the Australian Astrophysicist and Senior Fellow at the Planetary Science Institute believes finding planets outside the solar system that can sustain life should be made a top priority, and may be crucial for our survival as a species. Lineweaver profiled by Darren Osbourne stated “Determining whether these planets are habitable has become the new holy grail of astronomy, It’s probably one of the biggest, most confusing, and important issues that planetary scientists are going to have to deal with in the next 10 to 20 years. …Over the past few decades our exploration of the Earth has turned up life in all kinds of weird environments where we didn’t think life could be in, and we’re finding all types of extraterrestrial environments that we didn’t know about before, as these two groups expand they start to overlap in big ways, and that’s where habitable planets will be found. …Life, by managing its own environment, makes a planet habitable. It has produced adaptive features as a result of Darwinian evolution to live in colder and warmer environments. …The next step will be to develop a satellite that can look at the atmospheres of these planets, which will be able to give us some information about whether there is life there or not, …and if we don’t find one, maybe we’ll go extinct.”

Inspired by Darren Osborne ow.ly/bs3tA image source Facebook ow.ly/bs1T8