Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror
Space

Submission + - New class of pulsars discovered (nasa.gov)

xyz writes: "NASA's Fermi Gamma-ray Space Telescope has discovered a new class of pulsars which emit purely in gamma rays. A pulsar is a rapidly spinning neutron star, and of the nearly 1800 catalogued so far, only a small fraction emit at frequencies higher than radio waves. The gamma-ray-only pulsar, which lies within a supernova remnant known as CTA 1, is silent across parts of the electromagnetic spectrum where pulsars are normally found, indicating a new class of pulsars."
Space

Submission + - Boeing-747 aircraft modified to act as telescope (astronomy.com)

xyz writes: "A joint project of NASA and the German Aerospace Center, has developed a highly modified Boeing-747SP aircraft, to carry a 2.5-meter (98.4 inch) infrared telescope. The project SOFIA (Stratospheric Observatory For Infrared Astronomy) will observe radiation in the wavelengths from 0.3 microns to 1.0 millimeters, spanning the visible, infrared, and sub-millimeter portions of the electromagnetic spectrum. The observations will be taken at an altitude of 40,000 to 45,000 feet (12 to 14 km) which is above 99.8 percent of the water vapor in Earth's atmosphere, thus giving it a greater range of observations."
Space

Submission + - Black holes may not grow beyond certain limit (sciencenews.org)

xyz writes: "Do black holes increase in size indefinitely? According to an analysis by astronomers at Yale and European Southern Observatory, the maximum size a black hole may reach is only few tens of billion solar masses. The limit was calculated using an analysis of what may happen to the gas surrounding a black hole which has reached few tens of billion solar masses. It is thought that black holes of such size heat the surrounding gas to a temperature where the radiation pressure begins blowing outer layers into space."

Comment Re:No Mac for me! (Score 1) 446

If I were getting a replacement of the broken hard drive for "free" I'd still be able to understand them keeping the old one. But after paying a bomb for the replacement hard drive I WANT my old hard drive back. No question about it.
In my windows/linux desktop i just go out and purchase a hard drive if my old one is out of warranty and shove it in. I don't have to worry about proprietary shit getting out of warranty!

Slashdot Top Deals

Men of lofty genius when they are doing the least work are most active. -- Leonardo da Vinci

Working...