Credit: David A. Hardy,
PPARC
Explanation:
Astronomers have discovered a planetary system more similar to
our own
Solar System than any
known previously.
The bright star HD70642, visible with binoculars toward the constellation of
Puppis, was already known to be a star like our Sun.
Now a planet with twice Jupiter's mass has been discovered
in a nearly circular orbit at approximately half the
orbital distance of
Jupiter.
Such an orbit allows the possibility of habitable
Earth-type planets orbiting further in,
a possibility not likely with all
previously discovered planetary systems
with massive planets occupying disruptive closer
elliptical orbits.
The above illustration indicates what the
HD70642 planetary system might look like from a
hypothetical moon orbiting the newly discovered planet.
At only 90 light years distant, extremely faint
early radio broadcasts from
Earth are now passing this planetary system.
1999 2000 2001 2002 2003 2004 2005 2006 2007 |
Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Публикации с ключевыми словами:
планетная система - Планеты у других звезд - Экзопланета
Публикации со словами: планетная система - Планеты у других звезд - Экзопланета | |
См. также:
Все публикации на ту же тему >> | |
