Why iron meteorites make landfall but chondrites explode

Why iron meteorites reach the surface of the Earth but chondrites and conglomerate meteors tend to explode in the atmosphere - breaking into many pieces and leaving small scatters on the surface. It's all to do with air penetrating cavities in rocky meteorites causing them to weaken and explode apart. In other words, our atmosphere naturally protects the surface from the hazard of real meteorites - but there are always exceptions to the rule. Large chondrites have the ability to penetrate much closer to the surface - or even reach the surface.

Daffy Duck

Robert sent in the link https://crev.info/2017/12/is-this-duck-a-dinosaur/ ... a dinosaur that looks like a duck ...

Red Spot

Jovan sent in the links below - www.missionjuno.swri.edu/news/juno-probes-depths-of-great-red-spot ... and www.space.com/39066-jupiter-great-red-spot-depth-juno-spacecraft.html ... data collected by NASAs Juno spacecraft indicates that the great red spot penetrates deep below the upper atmosphere of Jupiter. The red spot is a giant oval of crimson coloured clouds that race counter clockwise around the perimeter of the anomaly ....

Hummadruz

The hum has been a subject in Northern Earth magazine for several years - see for example page 25 issue 151, December 2017. At https://phys.org/print431859742.html ... it seems earthquakes can cause the Earth to vibrate for an extended time but in 1998 researchers found the Earth itself generates a low frequency vibrational signal even in the absence of earthquake activity. This has now been extended to the sea floor. Seismometers on land and under the sea have determined the ocean bottom naturally vibrates - a low hum like a wind turbine.

Earth and Venus

Jovan sent in this link - www.skyandtelescope.com/astronomy-news/why-is-earth-magnetized-and-venus... ... why is Earth magnetised but Venus is not magnetised. It seems planetary scientists don't really know what to make of Venus, an admission in a popular magazine available for sale in newsagents. It is in many ways similar to the Earth in matters os size, mass, and rocky composition - but worlds apart in other ways. In atmosphere for example. Venus is cl;oud rich and dense. Surface temperatures are around 460 degrees celsius.

Loch Ness Monster

At https://phys.org/print431945566.html ... geomythology is back in the news. It is still an embryonic science we are told - and has to overcome prejudice and incredulity. It begins with a view over Mount Mazuna, a volcano in Oregon. Native Americans folk tales of its eruption go back 7000 years. Geologists Luigi Piccardi has suggested the Loch Ness monster has something to do with the unusual agitation of the lake's surface water during an earthquake.

Mid Continent Rift

At https://phys.org/print431943147.html ... geologists disprove theory about what stopped the formation of the Mid Continent Rift (in N America). This rift is generally thought responsible for the dramatic cliffs running along the shore of Lake Superior (where ice melt has scoured away sedimentary layers that once covered it ...

Weak Black Holes

It seems like black holes are not living up to the hype surrounding them as the magnetic field of one is much less powerful than envisioned in the various mainstream models of the phenomenon - see https://phys.org/print431844145.html ... we are told reality is catching up with black holes. In a paper in Science journal we learn they have significantly weaker magnetic fields than previously thought - code for, oh dear, measurement doesn't match theory. In fact the actual energy around a black hole is 400 times lower than entrenched in mainstream thinking.

Tempest Stela

It seems the Tempest stela of Ahmose, first king of dynasty 18, belongs to a delicate stage in the removal of the Hyksos from the delta region in Egypt. The city of Avaris was under seige by the army of Ahmose, king of Upper Egypt. As such, the tempest was influential in the events that followed, culminating in the expulsion of the Hyksos from Lower Egypt. The big question is - did the tempest have anything to do with the eruption of the Thera volcano in the Aegean. It is thought the ash cloud primarily moved eastwards across southern Anatolia.

Natufian Hunters

The Natufian culture was hunter gatherer in nature - but they also exploited edible plants and lived in permanent, or semi permanent, houses. It has become something of a historical fact that Natufian people were halfway on the road towards agriculture - although when you look at it from a longer lens you realise they were doing not a great deal more than Magdalenian people in Europe, stone age people in New Guinea, and the early Maya people exploiting the forest margins in Mexico (prior to the adoption of agriculture).