07 January 2010

Got Nova? NASA Don't.

Scientists have been predicting for decades that as a massive star's nuclear fuel runs out, it begins to collapse under its own weight and the resulting pressure causes it to explode. Well, seems that's not the case and something is missing from the equation because what actually happens is that gravity takes over and the star collapses with a fizzle instead of a bang.

Novae of smaller suns are understood, but in order to find out what really happens with larger, massive stars, NASA is beginning work on a new space observatory they hope will help them find the missing data. Named NuSTAR or the Nuclear Spectroscopic Telescope Array, scheduled to launch in 2011 on a Pegasus rocket, its mission is to look inside a supernova as it explodes to observe the high-energy X-rays emitted. This will allow them to figure out what is happening inside the star and not merely on the outside.

NuSTAR's optics has special coatings and configurations that allow it to reflect X-ray energy on to new sensors that can tolerate the high energy of high-intensity X-rays. As an added bonus, NuSTAR will also be able to focus on the X-ray emissions of supermassive black holes and blazars.

Keep tuned to Mystical Musings for more news here on Earth and beyond.

Enjoy!

--->Susan

Source: Science@NASA
NuSTAR Mission Home Page

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