Bolide Events 1994-2013

NASA released the map below that reveals that small asteroids frequently enter and disintegrate in the Earth's atmosphere with a random distribution around the world. It is a visualisation of data gathered by US sensors over a 20 year period - some 556 occurrences of fireball activity.


Comet behaving like a comet

At ... is another report on the NASA release on Comet Siding Spring from data produced by their MAVEN mission to Mars. Debris from the comet caused an intense meteor shower and enabled a new layer of ions, or charged particles, to the atmosphere of Mars. From observational data NASA scientists were able to make a direct connection between the input of the debris and the ions.

galactic corpses

At ... we learn there is a mystery at the heart of our galaxy, the Milky Way. It has lots of gas, dust, and a huge black hole three million times the size of our Sun, but it has no pulsars - the corpses of dead stars. It is thought a lot of pulsars should exist at the galactic centre as stars form, thrive, and die - much like us. Eyes are being drawn towards the black hole - has it been munching on pulsars?

Frozen Bison

At ... a steppe bison has been found in eastern Siberia, in a frozen state. It is almost intact and has a complete brain, heart, blood vessels, and a digestive system - although some of the internal organs have shrunk over time. There was no obvious cause of death but some researchers are already explaining the unusual nature of the find away as the animal dying of starvation - yet was was it frozen intact. The same story can be found at ...


At ... we have a DNA study that seems to overturn another one a few months ago, or rather, it introduces some factors which seem to show that mapping migrations in the past is not as simple as geneticists have assumed. One study contradicts an earlier study and finding - and no doubt this one will meet the same fate. What is clear is that there is a distinct DNA link between Palaeolithic and Mesolithic populations of Europe - and people moved into frozen areas after the ice melted.

Going back to Comet Siding Spring's brush with Mars

Not a lot of information has come out of NASA on the recent close passage to Mars by Comet Siding Spring. However, at on November 7th (scroll down if necessary) you will find a short bit taken from a NASA press conference. It resulted in a heavy meteor shower with an origin in the comet - and this is described as the highlight. A few tons of comet dust were deposited on Mars. A human sitting on the surface of Mars might have seen thousands of shootings stars per hour - a veritable meteor storm.

Assyrian retraction

At ... an article in the journal Climate Change claims drought was responsible for the decline of the Assyrian Empire in the second half of the 7th century - beginning in around 657BC. Within 5 years of that date the political and economic stability of the empire had eroded resulting in rebelllions and civil wars. However, the region was used to bouts of drought and these are recorded from all the previous centuries as Assyria grew in importance. As climate scientists, or climate researchers, they have a particular agenda.

How the Sun works

At ... we have an ultra violet image taken by the IRIS mission showing a network of solar jets. The journal Science has several articles on the IRIS discoveries - even though it only began in 2013. Intermittent small scale jets have been detected which appear to provide the energy behind the solar wind.


The volcanic island of Vanuatu in New Caledonia is prone to earthquakes and is positioned near an ocean trench - or fault. Scientists and geologists from New Zealand's James Cook university have discovered Vanuatu is not all it seems. Apparently, the volcanism is laid down on top of an ancient fragment of the Australian continent - which is situated 2200km away. Similar pieces of stranded continent exist in other parts of the world - in the Indian Ocean for instance, and Iceland (and various other locations in the Atlantic and other oceans).

Big Wave in Oman

At ... which is roughly contemporary the 2300BC event (nuances in dating methodology, changes as a result of calibration etc). The tsunami wave washed over a village that has recently been subject to archaeological research and it seems to have shifted large amounts of sand and human detritus, such as charcoal from fire pits. Bivalve shells with both sides of the shell intact have been found stranded onshore, a sure sign of a tsunami wave as humans would have broken them apart to get at the insides.