Blog Archives - Page 5 of 11 - Hermanus Astronomy

Public Presentation on Tuesday 12 August at 5.30pm at the Hermanus Municipal Auditorium

Blog / By astronomy / 5 August, 2014 5 August, 2014

National Science Week 2 August to 9 August From Space Flight to Space Tourism A fascinating video clip by acclaimed astronaut Sunita Williams, the 2012 commander of the International Space Station, giving insight into the living conditions and practicalities of life in space. + How Space Flight is moving into the realm of Commercial Business …

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Novae Surprise with Gamma Rays

Blog / By astronomy / 2 August, 2014 2 August, 2014

In a classical nova, a white dwarf siphons material off a companion star, piling up material on its surface until thermonuclear processes kick off, creating a brilliant outburst. NASA / JPL-Caltech Astronomers have detected gamma-ray emission from three classical novae, an unexpected discovery that has left them perplexed. Some days, it seems like everything is …

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X-Ray Glow Evidence of Local Hot Bubble

Blog, Slider / By astronomy / 2 August, 2014 2 August, 2014

Scientists have confirmed that the soft X-ray glow permeating the sky has two sources: one inside the solar system, one outside. For over a decade, astronomers have debated the source of a soft X-ray glow that permeates the sky. Some thought the solar wind might be responsible, while others suspected an enormous bubble of hot …

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Mysterious X-ray signal from space

Blog / By astronomy / 8 July, 2014 8 July, 2014

A mysterious X-ray signal has been found in a detailed study of galaxy clusters using NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton. One intriguing possibility is that the X-rays are produced by the decay of sterile neutrinos, a type of particle that has been proposed as a candidate for dark matter. While holding exciting potential, …

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Gemini Reveals a Gravitational Wave Source in Hiding

Blog / By astronomy / 8 July, 2014 8 July, 2014

Einstein’s Theory of General Relativity predicts that accelerated masses emit gravitational waves, or ripples in space-time. Even though gravitational waves have yet to be detected directly, we expect that there are more than hundred million gravitational wave sources in our own galaxy. However, as of today, we know of only a few such sources. A …

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