Astronomy news

running backwards

At ... black holes are strange affairs. They refuse to allow anything to escape from out of their clutches - even light itself. No wonder they are invisible. It is said that black holes appear to know what happens in the future - a sort of holey oracle. This is in order to form in the first place - if you can get your head around that idea. In a new paper in Physical Review Letters, 'A New Area Law in General Relativity' (Sept 2015) we are told a new law implies thermodynamic time runs backwards inside black holes.

solar research

At ... IRIS and Hinode telescopes and satellites - looking at the Sun. Why is the Sun so hot? Ideas being explored, filaments, Alfven etc.


lonesome high spot

NASAs Dawn spacecraft spotted a tall conical mountain on Ceres

It stands 4 miles high and the perimeter is sharply defined - no rubble or debris at the base. . See

lots of noise

Lots of noise this week as apparently Stephen Hawking has spoken on the subject of black holes - see ... He claims he has come up with a solution to 'information loss' ... whatever that means. Other scientists were not so confident about Hawking's proposal - and the full write up has not even been published as on yet.

heat on Pluto

Stephen Smith may have a mechanism, loosely described, to explain the heat found on Pluto - following a query from an SIS member. See ... which is about other solar objects but will apply to Pluto and Charon. Heat and temperature gradients have been found on the outer planets (such as Neptune) located above the polar regions. Hot spots can also be seen in the atmosphere of Neptune. Similar heat has been witnessed from spacecraft monitoring Saturn, Jupiter, Venus, Io and Enceladus etc.

get up to date

  get up to date with Comet Churyumov-Gerasimenko as we approach our autumn speaker meeting and the presentation by Mark Baily of the Armagh Observatory. For example, see ... where the surface of the comet is discussed in a paper in Geophysical Research Letters this month (August, 2015). There are numerous fractures and cracks on the surface of the comet.

black hole sling shot

At ... some supernovae can't be explained by consensus cosmology. They are an astronomical mystery. As such they are inclined to attract some peculiar theories and in this one, a 'binary black hole sling shot' is to blame according to a study just published in the Monthly Notices of the Royal Astronomical Society. The problem actually is that astronomers can't see anything where the explosion of light took place - no trace of star formation, no cluster of old stars, nothing much at all.

Rosetta in August

  the comet is now at perihelion and is releasing permanent outflows and jets of material - see ... and the general appearance of the comet is brighter. 

a gentle auroral flow

  At August 11th .. it seems that for 4 days now the Earth has been inside a stream of fast moving solar wind. However, this has not sparked a geomagnetic storm or any kind of brilliant auroral phenomena. Instead, there has been what is described as a gentle glow of auroral light ringing the poles.

The images was taken by Ian Griffin in New Zealand, looking out over Otago Peninsular.

Euphrosyne asteroids

At ... NASAs WISE mission, which involved an infrared telescope and camera on a spacecraft, discovered a group of dark asteroids known as the Euphrasyne asteroids - which are distributed at the outer edge of the better known asteroid belt between Mars and Jupiter. They have an unusual orbital path  tha juts wel above the ecliptic. They may also be the remnant of an ancient collision.