Mission would study 'zombie' stars

Nov. 11, 2011 at 7:28 PM   |   Comments

GREENBELT, Md., Nov. 11 (UPI) -- U.S. researchers with NASA say a proposed mission could reveal the secrets of neutron stars, sometimes called the zombies of the cosmos.

Neutron stars, the remnants of massive stars that have run out of fuel and collapsed under their own gravity, shine on even though they're technically dead, scientists said.

Although the nuclear fusion fires that sustained its parent star are extinguished, a neutron star still shines with radiation generated by its magnetic field, a trillion times stronger than Earth's, made intensely concentrated as the core collapsed.

"A neutron star is right at the threshold of matter as it can exist -- if it gets any denser, it becomes a black hole," Zaven Arzoumanian of NASA's Goddard Space Flight Center in Greenbelt, Md., said in a NASA release Wednesday.

A proposed NASA mission called the Neutron Star Interior Composition Explorer would unveil the dark heart of a neutron star, he said.

"We have no way of creating neutron star interiors on Earth, so what happens to matter under such incredible pressure is a mystery -- there are many theories about how it behaves," he said.

In the proposed mission, an array of 56 telescopes attached to the International Space Station would collect X-rays generated both from hotspots on a neutron star's surface and from its powerful magnetic field.

Topics: NASA
© 2011 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.
Recommended UPI Stories
Featured UPI Collection
Notable deaths of 2014 [PHOTOS]

Notable deaths of 2014 [PHOTOS]

Most Popular
Spiders prefer the city life
Rock-eating bacteria discovered in buried Antarctic lake
Bill Gates to Mark Zuckerberg: I'll take the ice bucket challenge, and improve it
Latvia boasts world's first net for migrating bats
Study explains why ER nurses do what they do
Trending News