'One size fits all' when it comes to unraveling how stars form

A massive star, 25 times the mass of the sun, is forming in a similar way to low-mass stars, astronomers have discovered. The research is one of the final pieces of the puzzle in understanding the lifetimes of the most massive and luminous stars, called O-type stars. These stars are major contributors to heavy element production in the Universe, such as iron and gold, which they eject into space in dramatic supernovae explosions at the end of their lives.

Source:: ‘One size fits all’ when it comes to unraveling how stars form

      

'One size fits all' when it comes to unraveling how stars form

A massive star, 25 times the mass of the sun, is forming in a similar way to low-mass stars, astronomers have discovered. The research is one of the final pieces of the puzzle in understanding the lifetimes of the most massive and luminous stars, called O-type stars. These stars are major contributors to heavy element production in the Universe, such as iron and gold, which they eject into space in dramatic supernovae explosions at the end of their lives.

Source:: ‘One size fits all’ when it comes to unraveling how stars form

      

Fukushima Thyroid Cancer?

By Broc West

via Goddard’s Journal / October 22, 2015 / Study critiqued Tsuda et al. (2015). Thyroid Cancer Detection by Ultrasound Among Residents Ages 18 Years and Younger in Fukushima, Japan: 2011 to 2014. Epidemiology. Oct 5. http://pubmed.com/26441345 Contrary opinion of Fukushima Medical University scientists conducting the screening campaign: http://fmu-global.jp/?wpdmdl=710 http://www.cancernetwork.com/ata-2015… Study predicting magnitude of detection bias in the Fukushima screening campaign: Jacob et al. (2014). Ultrasonography survey and thyroid cancer in … Continue reading

Source:: Fukushima Thyroid Cancer?

      

Traces of enormous solar storms in the ice of Greenland and Antarctica

Solar storms and the particles they release result in spectacular phenomena such as auroras, but they can also pose a serious risk to our society. In extreme cases they have caused major power outages, and they could also lead to breakdowns of satellites and communication systems. According to a new study solar storms could be much more powerful than previously assumed. Researchers have now confirmed that Earth was hit by two extreme solar storms more than 1000 years ago.

Source:: Traces of enormous solar storms in the ice of Greenland and Antarctica

      

Traces of enormous solar storms in the ice of Greenland and Antarctica

Solar storms and the particles they release result in spectacular phenomena such as auroras, but they can also pose a serious risk to our society. In extreme cases they have caused major power outages, and they could also lead to breakdowns of satellites and communication systems. According to a new study solar storms could be much more powerful than previously assumed. Researchers have now confirmed that Earth was hit by two extreme solar storms more than 1000 years ago.

Source:: Traces of enormous solar storms in the ice of Greenland and Antarctica

      

First movie of stellar-surface evolution beyond our Solar System

Astronomers present for the first time a movie that shows the evolution of stellar spots on a star other than our Sun. The long-term, highly-sampled, phase-resolved spectroscopic data were made possible with the STELLA robotic telescopes on Tenerife. Over a period of 6 years the growth and fade of giant stellar spots on the star XX Tri are seen. The spots reveal an underlying magnetic cycle that has a period comparable to our Sun’s but is much stronger.

Source:: First movie of stellar-surface evolution beyond our Solar System

      

First movie of stellar-surface evolution beyond our Solar System

Astronomers present for the first time a movie that shows the evolution of stellar spots on a star other than our Sun. The long-term, highly-sampled, phase-resolved spectroscopic data were made possible with the STELLA robotic telescopes on Tenerife. Over a period of 6 years the growth and fade of giant stellar spots on the star XX Tri are seen. The spots reveal an underlying magnetic cycle that has a period comparable to our Sun’s but is much stronger.

Source:: First movie of stellar-surface evolution beyond our Solar System

      

Large solar storms 'dodge' detection systems on Earth

According to observations from the Tihany Magnetic Observatory in Hungary, the indices used by scientists to assess the Sun’s geomagnetic perturbations to Earth are unable to detect some of these events, which could put both power supply and communication networks at risk. The Tihany Magnetic Observatory registered a solar storm similar to the largest one ever recorded while other observatories were completely unaware of the event.

Source:: Large solar storms ‘dodge’ detection systems on Earth