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On Water And Subsidence In Mexico City

Mexico City has the best hotel shower ever. I am not one to spend a long time in the shower, but...

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Bente Lilja ByeRSS Feed of this column.

Earth science expert and astrophysicist writes about Earth observation, geodesy, climate change, geohazards, water cycle and other science related topics.

Today I do research and provide... Read More »

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In December an important climate change meeting will take place in Copenhagen, Denmark: The United Nations Climate Change Meeting or the so-called COP15 climate meeting.

Our society is saturated with GPS, or Global Navigation Satellite System (GNSS), applications. GPS is the first GNSS and it is operated by US Air Force. Most people are not aware of the fact that GPS was developed and is run by the military. A reduced quality signal is released for civil use. After Europe decided to build their own GNSS, called Galileo, the US Air Force decided to released an improved signal. It was and is a matter of competition.




Hitler's gift to astronomy? What?

Believe it or not, Hitler wanted to give Mussolini and Rome a planetarium*. Rome was among the first in the world to build a planetarium. Italy (and Mussolini) had already taken a planetarium as part of the 'compensation' for the damage Germany did to Italy in WW1 and opened the first Roman planetarium already in 1928.

It is the most peculiar story, so much so that I feel compelled to tell, however little, what I know about this hidden treasure of planetarium history...
Astronomy and green space? Yes, indeed. As an astrophysicist I always find great pleasure in pointing out that the Earth is a planet, just like all the rest of the bunch orbiting our Sun and thus an astronomical object. The Earth is special though because we live on it. And we talk about a green planet referring to environmental issues on planet Earth.
earth
Credit: NASA
At the European Geophysical Union EGU, Jochen Zschau from GeoForschungZentrum GFZ in Germany presented his Sergey Soloviev medal lecture, Meeting the Challenge of Earthquake Risk Globalisation: Towards the Global Earthquake Model (GEM) on the first day of this huge gathering of geoscientific expertice.

GEM
Bringing together more than 9.000 geoscientists from all over Europe and the rest of the world into one meeting covering all disciplines of the Earth, Planetary and Space Sciences, the European Geophysical Union (EGU) annual General Assembly takes place in Vienna this week.