Astronomy news


At ... Europa is a moon of Jupiter and the link provides some historical information on the discovery, by telescope (the kind you hold in your hand), of the object some few hundred years ago.


At ... NASAs Dawn spacecraft has been taking pictures of another small planet, or large asteroid, Ceres - which again displays evidence of unusual activity, including energetic particle bursts.



At ... the New Horizons spacecraft has returned pictures of Charon, the larger companion of Pluto. The pictures are thought to show a very violent history, possibly even evidence of a collision. The solar system is becoming more insecure the more it is investigated.

more on black holes

At ... we have a little history of black holes and how the idea came about. It is illuminating.

  This is how a black hole is perceived. In reality all you get is a flash of intense energy.

water on Mars

At ... NASAs Mars Reconnaissance Orbiter has found evidence of water flow, it is claimed. Using an imaging spectrometer researchers detected the signature of hydrated minerals on slopes where mysterious streaking was seen on the Mars surface. These streaks appear to ebb and flow over time, expanding in warm seasons and contracting in cooler seasons. However, warmer is not so warm as they are talking about temperatures of minus 23 Celsius (which is pretty chilly and not obviously very warm).

cosmic rays

At (Wednesday September 30th 2015) .... there is news of sun spot activity on the face of the Sun, and prospects of a CME event.

black hole biggies

At ... we learn about a rethink on black holes. It seems they want to ditch Einstein's gravitational waves, part of his general theory of relativity. It seems that a fruitless 11 year search for gravitational waves via high precision telescopes has led to this conclusion.

water-ice cycle, comets

At ... which begins by telling us that comets are composed of dust and ices which they periodically shed as they swing round the Sun. Sunlight heats up the frozen nucleus of the comet, we are told, and water and gases are released - all standard stuff.


Robert Farrar sent in the link ... which is another set of images (go to the link but below is one to wet the appetite)

rosetta surface changes

Robert Farrar sent in the link to .... which seems to have preceded the link on PhysOrg ( Robert asks if electrical erosion has been captured by the Rosetta camera (in the process of forming a crater).