Sunday, 27 May 2012
Physics stuff from the week 14-20/5/12
[video] Don't miss the transit of Venus on the 5th June - it won't happen again until 2117!
http://phys.org/news/ 2012-05-transit-venus.html
Did you notice that asteroid, last Monday? No? It came incredibly close. Admit it - you were cacking yourselves!
http://phys.org/news/ 2012-05-haircut-asteroid-ju.htm l
A great picture of an annular eclipse, which happens when the moon's
too close to fully obscure the sun. This happened for the same reason as
the recent 'supermoons' - perigee - where the moon's closest in its
elliptical orbit around the Earth
http://apod.nasa.gov/apod/ ap120519.html
Another great picture of a partial (annular) eclipse, seen from Manila Bay, in 2009
http://apod.nasa.gov/apod/ ap120520.html
Blazars - black holes that emit high-energy gamma rays - are heating up
galactic dust, in some places to temperatures 100 times hotter than
expected!
http://phys.org/news/ 2012-05-astrophysicists-source- cosmological-formation.html
180 million years ago, during the Jurassic period, Earth's magnetic
field flipped. This was one of the best-recorded geomagnetic flips, set,
quite literally, in stone, in the rocks of South Africa
http://phys.org/news/ 2012-05-tracking-jurassic-rever sal-earth-magnetic.html
A wonderful picture of Cygnus X
http://apod.nasa.gov/apod/ ap120517.html
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