Featured Posts

 
tag:blogger.com,1999:blog-1014682403395027648.post-619359741206014302: Wide Pair of Neutron Stars
Beyond Earthly Skies

Direct link Wide Pair of Neutron Stars

26 Mar 2015, 22:00 UTC <span style="font-family: inherit;">A pulsar is basically a rotating neutron star that emits a bipolar beam of electromagnetic radiation. This beam of electromagnetic radiation is only visible when directed at the observer. As the neutron star rotates, the beam periodically sweeps pass the observer, resulting in a pulsed appearance of the emission. Hence the term “pulsar” denotes such a neutron star. Of all the pulsars known to date, ~10 percent are in binary systems with white dwarf, neutron star or main sequence star companions.</span><br /><span style="font-family: inherit;"><br /></span> <div class="separator" style="clear: both; text-align: center;"><a href="http://1.bp.blogspot.com/-xLESIC1utrM/VROnV91MDTI/AAAAAAAAHOE/ZD92lXPl_Q4/s1600/Post%2B-%2BMarch%2B2015%2B(11).jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="http://1.bp.blogspot.com/-xLESIC1utrM/VROnV91MDTI/AAAAAAAAHOE/ZD92lXPl_Q4/s1600/Post%2B-%2BMarch%2B2015%2B(11).jpg" width="640" /></a></div><div style="text-align: center;"><br /></div><span style="font-family: inherit;">PSR J1930-1852 is a pulsar in a double neutron star system (DNS). Both neutron stars orbit each other every 45 days, making this system the widest known pair of neutron stars. The rest of the known DNS systems are much more tightly bound and have orbital periods of a few hours to a few days. PSR J1930-1852 itself spins at a rate of over 300 times per minute. Although this may seem fast, it is actually extremely slow for a pulsar. The combined mass of PSR J1930-1852 and its companion neutron star is ...
http://sen.com/blogs/emily-lakdawalla/cassini-returns-to-icy-moon-imaging: Cassini returns to icy moon imaging
Space Exploration Network

Direct link Cassini returns to icy moon imaging

26 Mar 2015, 19:04 UTC
http://feeds.feedburner.com/6821017a-366d-3d65-859d-9c20bb580537: Get Amazing Views of First-Quarter Moon This Week
Discovery News - Space News

Direct link Get Amazing Views of First-Quarter Moon This Week

26 Mar 2015, 17:40 UTC
http://www.airspacemag.com/daily-planet/japanese-peoples-camera-bound-asteroid-180954756/: Japanese “People’s Camera” Bound for an Asteroid
Air & Space Magazine

Direct link Japanese “People’s Camera” Bound for an Asteroid

26 Mar 2015, 14:52 UTC

Displaying 11-20 of 26662 entries.

Previous | 1 2 3 4 5 6 7 ... 2667 | Next

Latest Vodcast

Latest Podcast

Advertise PTTU

Extrasolar Planets

  • Planetary Systems: 1202
  • Multiple Planet Systems: 480
  • Planets: 1906
more

NASA Picture of the Day

Astronomy Picture of the Day

astronomy_pod