Binary White Dwarfs Produce Gravitational Waves

Binary White Dwarfs Produce Gravitational Waves

  A team of astronomers led by researchers from The University of Texas at Austin has confirmed the emission of gravitational waves from the second-strongest known source in our galaxy by studying the shrinking orbital period of a unique pair of burnt-out stars. Their observations tested Albert Einstein’s theory of general relativity in a new [continue reading]

USNO Releases Final Version of CCD Astrograph Star Catalog

USNO Releases Final Version of CCD Astrograph Star Catalog

  The United States Naval Observatory (USNO) has released the Fourth Edition of its USNO CCD Astrograph Catalog (UCAC4), the most precise and comprehensive star catalog ever produced by ground-based instrumentation. The catalog contains data on about 113 million stars and is complete for all stars from the brightest, Sirius, to about 16th magnitude. An example of star catalog. [continue reading]

Curiosity Returns Voice and Telephoto Views from Mars

Curiosity Returns Voice and Telephoto Views from Mars

  NASA’s Mars Curiosity has debuted the first recorded human voice that traveled from Earth to another planet and back. A chapter of the layered geological history of Mars is laid bare in this postcard from NASA’s Curiosity rover. The image shows the base of Mount Sharp, the rover’s eventual science destination. Image Credit: NASA/JPL-Caltech/MSSS In [continue reading]

A Supernova in NGC 5806 Spotted

A Supernova in NGC 5806 Spotted

  A new image from the NASA/ESA Hubble Space Telescope shows NGC 5806, a spiral galaxy in the constellation Virgo (the Virgin). It lies around 80 million light years from Earth. Also visible in this image is a supernova explosion called SN 2004dg. NGC 5806, a spiral galaxy in the constellation Virgo (the Virgin). Also [continue reading]

 The Van Allen Radiation Belts to be Examined

The Van Allen Radiation Belts to be Examined

  A University of Minnesota-led experiment is aboard NASA’s Radiation Belt Storm Probes (RBSP) mission, a probe of the forces that govern radiation in the Van Allen Radiation Belts. These two concentric, doughnut-shaped regions of space girdle the Earth and pose radiation danger to astronauts and spacecraft. The twin RBSP satellites and the Van Allen [continue reading]

Neil Armstrong -- the First Man on the Moon -- Dies

Neil Armstrong — the First Man on the Moon — Dies

  A statement from his family says he died from complications from heart surgery he had to relieve four blocked coronary arteries on 7 August. The statement did not say where Armstrong died. Neil Armstrong. 1930-2012. Image Credit: NASA   He set foot on the Moon on 20 July 1969, famously describing the event as “one small [continue reading]