Blast of Gas

  Sep 02, 2014 The large ALMA radio telescope in Chile has discovered that “billowing columns” of “gas” are “fleeing” from gravitational forces that would snare them into new stars. The size of the Sculptor Galaxy depends on the outcome. Unless, of course, star formation is not so much a matter…

Continue reading

The Ring is a Barrel

  Sep 1, 2014 The Ring Nebula could be called the “Tube Nebula”. “Bipolar outflow” is a term often used to describe the nebular structure seen above, although the cause of the effect remains baffling to consensus astronomers. The prevailing opinion is that nebular structures form “knots” because gases and…

Continue reading

Solar Supernova

  Aug 26, 2014 How do supernovae relate to the Sun? On June 7, 2011 the Sun erupted with the largest plasma event yet recorded by the Solar Dynamics Observatory. SDO was launched on February 11, 2010 into a geosynchronous orbit, with plans for a five-year mission. It is capable of observing the Sun in…

Continue reading

Puppis A

  Aug 25, 2014 Can shockwaves create X-rays? Many Picture of the Day articles point out that stars are not simplistic globes of hot gas under pressure, they are composed of plasma. Plasma is electrically charged. Since it is ionized, it does not behave like a pressurized gas, so shockwaves…

Continue reading

Galactic Magnetic Fields

  Aug 22, 2014 New observation techniques increase galactic field mapping accuracy. The LOw-Frequency ARray, (LOFAR) is a radio interferometer, or radio telescope, made up of several observing stations in Europe. Signals received at the various observing stations are digitally integrated into a phased array, which is a collection of…

Continue reading

Ski Enceladus

  Aug 21, 2014 This small moon is said to be covered with powdery snow. Enceladus was one of the Gigantes, or Titans, who were overthrown by Zeus and his minions. It is perhaps an ironic name, since it is a tiny world only 494 kilometers in diameter. Its gravitational acceleration…

Continue reading

Homunculus in 3D

  Aug 20, 2014 A double-lobed nebula stirs the imagination. Inside the Large Magellanic Cloud, a dwarf galaxy orbiting the Milky Way, is a structure known to astrophysicists as a “supernova remnant”. Theories of stellar evolution state that extremely massive stars are short-lived, converting their mass into radiant energy at…

Continue reading