A history of the world. As seen from space. Over a really long stretch of time.
If the Earth is about 4.5 billion years old, and Pangea
split up only about 200 million years ago, what happened before then? I never knew that geologists could reconstruct the continents' movements from before
Pangea. Not only that, but they can give us a preview of what comes next.
Here's three possible ways the continents might be joined in 250 million years.
In the big picture, researchers from U.C. Lancashire have just finished
a model of the way the Milky Way Galaxy formed. [more inside]
Don't continue fooling yourself
. The earth is growing and expanding rapidly. Despite plate tectonics' popular acceptance in the 60s, Samuel Warren Carey
, the father of modern expansion tectonics, was publicly promoting his theories of an expanded earth
as late as 1981. One of the theory's most prominent modern spokesmen is comics artist Neal Adams
, who has created a number of informative videos
about a new model of the universe
that even manages to explain why the dinosaurs died out
. [more inside]
The GTC (Great Telescope Canaries) sees first light today.
Apart from the sheer size
(10.4 m) of its mirror and from the science
it will deliver, the GTC
is remarkable by its location at the Roque de los Muchachos Observatory
2426 m high at the rim of the Caldera de Taburiente
in the island of La Palma
La Palma is also, for a number of reasons
, also interesting for geologists. In that regard, it made headlines
a couple of years back due to a paper
about the risk of a collapse of the island which could cause a devastating tsunami.
Oh, and it's also a really nice place for a holiday
Next Thursday, NASA will announce the discovery of huge water ice oceans on Mars
. Lying less than a metre beneath the surface south of 60° latitude, the water ice reservoirs if melted would form an ocean 500m deep covering the entire planet. NASA insiders believe these findings could result in a manned landing within 20 years.