space news from around the webin association with SpaceNews

X-ray space telescopes measure spin rate of black hole
Posted: Thu, Feb 28, 2013, 7:14 AM ET (1214 GMT)
NGC 1365 supermassive black hole illus. (NASA) European and American space telescopes have, for the first time, measured the spin rate of a supermassive black hole in the center of a galaxy, finding evidence to support one model of how such black holes accrete matter. ESA's XMM-Newton and NASA's NuSTAR spacecraft observed the galaxy NGC 1365, looking for x-ray emission from iron atoms near the supermassive black hole at the galaxy's heart. The joint observations found that the black hole is spinning nearly as rapidly as the theory of gravity will allow. The joint observations support a model where matter flows into the black hole in a uniform matter, causing the black hole's spin rate to increase; if the matter came in irregularly and from different directions, it would rotate more slowly.
<<previous article   next article>>
news in brief
NASA selects Discovery mission finalists
Posted: Sat, Feb 15 8:23 AM ET (1323 GMT)

Astranis raises $90 million for small GEO satellites
Posted: Sat, Feb 15 8:22 AM ET (1322 GMT)

SpaceShipTwo arrives at Spaceport America
Posted: Sat, Feb 15 8:21 AM ET (1321 GMT)

news links
Wednesday, February 19
Ready to buy a trip to orbit from Elon Musk?
Quartz — 6:36 am ET (1136 GMT)

about   ·   ·   mailing list