spacetoday.net: space news from around the webin association with SpaceNews


Dwarf planet Makemake lacks atmosphere
Posted: Fri, Nov 23, 2012, 1:45 PM ET (1845 GMT)
Makemake illustration Nov 2012 (ESO) Astronomers observing a stellar occultation by the dwarf planet Makemake found no evidence of an atmosphere around the distant, icy world. Astronomers observed the occultation using three telescopes at the European Southern Observatory (ESO) in Chile in April 2011 as the dwarf planet, about two-thirds the size of Pluto, passed in front of a distant star. The star abruptly disappeared and then reappeared, a telltale sign that there is no atmosphere around the dwarf planet. Astronomers speculate that the dwarf planet is not massive enough to hold on to an atmosphere. The observations did allow astronomers to refine the density and size of Makemake, including the fact that the world is an oblate spheroid, with axes of 1430 and 1502 kilometers.
<<previous article   next article>>
news in brief
Russia launches classified satellite
Posted: Sun, Jun 25 9:02 AM ET (1302 GMT)

SpaceX Falcon 9 launches BulgariaSat-1
Posted: Sun, Jun 25 9:01 AM ET (1301 GMT)

PSLV launches 31 satellites
Posted: Sun, Jun 25 8:59 AM ET (1259 GMT)

news links
Tuesday, June 27
Bezos' Blue Origin to build rocket engines near ULA plant in Alabama
Denver Business Journal — 5:19 am ET (0919 GMT)


about spacetoday.net   ·   info@spacetoday.net   ·   mailing list