[PWC-MEDIA] [Nova-perslijst2] Verre dwergplaneet Eris is Pluto’s tweelingzus
- From: Marieke Baan <h.m.baan@xxxxxx>
- To: nova-perslijst1@xxxxxxxxxxx, nova-perslijst2@xxxxxxxxxxx, nova-astronomen@xxxxxxxxxxx
- Date: Wed, 26 Oct 2011 22:14:08 +0200
26 October 2011 — ESO Science Release eso1142
Faraway Eris is Pluto's Twin— Dwarf planet sized up accurately as it blocks
light of faint star
Astronomers have accurately measured the diameter of the faraway dwarf planet
Eris for the first time by catching it as it passed in front of a faint star.
This event was seen at the end of 2010 by telescopes in Chile, including the
Belgian TRAPPIST telescope at ESO’s La Silla Observatory. The observations show
that Eris is an almost perfect twin of Pluto in size. Eris appears to have a
very reflective surface, suggesting that it is uniformly covered in a thin
layer of ice, probably a frozen atmosphere. The results will be published in
the 27 October 2011 issue of the journal Nature.
The release, images and videos are available on:
http://www.eso.org/public/netherlands/news/eso1142/
http://www.astronomie.nl
--
Met vriendelijke groet,
Drs. Marieke Baan
Nederlandse Onderzoekschool voor Astronomie
NOVA Informatie Centrum
Science Park 904
1098 XH Amsterdam
T +31(0)20-5257480
F +31(0)20-5257484
M +31(0)6-14322627
www.astronomie.nl
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