it's as clear as day and night but on an
exotic
learn world astronomers have for the
first time measured the temperatures
bearing across the surface planet beyond
our solar system
this is the hidden University the
Spitzer Space Telescope
exploring the mysteries and infrared
astronomy with your host
doctor robert her
planets orbiting other sun-like stars
are notoriously difficult to observe
there so distant but no telescope is yet
powerful enough to photograph them
directly
their feeble light is blurred into the
glare the stars they orbit
nonetheless since 1995
astronomers have discovered over 200
extrasolar planets
by observing effects they have on their
parent stars these include gravitational
induced wobbles
and even think Demings starlight on the
planet pass in front
the infrared I the Spitzer Space
Telescope has already proven to be an
exciting tool for learning more about
these alien worlds
in 2005 astronomers great deming
and Dane Sharma no announced the first
detection up light
from 2x personal planets seen as they
went into a clips behind
their start now astronomers Joe
Harrington
at the University of Central Florida and
Brad Hanson at UCLA
have taken this one step further they
had actually measured differences
between the day and night cited such a
world
so this this particular system it was in
store is called ups on Andromeda appeals
and
constellation Andromeda and it's
actually has 3 known planets orbiting
and
named commensurate just BC NDP
and the simpson this this particular one
we looking for is a signal from a
syndrome to be
that's the closest pass this is a plant
that shit that's actually overturning
the its parent star in about four and a
half day
orbital period so it's it's match much
much closer to its past and say in
advance
Houston system as planned it isn't just
an extra hot mercury
it's a gas giant as massive as Jupiter
and while there's nothing like it
in our own solar system astronomers have
found it her from
million so-called jupiter's have been
discovered around other stars
but very little yet known about what
boasting balls
gaps are really like answer that the
natural question came about
was how does this increased amount to
energy that there's even concern
affect the structure of the planet's
atmosphere so some model suggests that
in fact the plaza the
the light is absorbed and we may be very
quickly so that the heat
is coming up mostly on the dayside my
side well as other models suggest that
maybe
know if they're very strong winds such
as give rise to the bands and Jupiter
in fact that I can be distributed the
energy can be distributed
quite evenly around the plant before it
gets me a metal to test these models
Carrington Hansen needed to observe the
system in the infrared
with the planet needs most it's like the
stars over a hundred times brighter
spitzer can still pick out the small
variations in the combined brightness
as the planet moved through it orbit so
we went on we try to observe
the system to see whether there was a
day-night temperature dips and we found
them
evidence that there is a strong day
night temperature difference being that
they signed
and I site based on the fact that we see
is characteristic variation in the total
light from a system over the course of
all 1/2 days in exactly
in the right phase in the new the right
time to correspond to this model
infected a side is hard
and I signs cold the temperature
differences in minutes
over 2500 degrees Fahrenheit or fortune
100 degrees Celsius
between the comfortably cool night sight
and the boiling hot spot facing the star
this is vastly different from
infrastructure
Jupiter which is even temperatures all
around this remarkable result
marks the first time any kind of
variation has been seen across the
surface of the planet
outside our solar system for now
only imagine arts can provide pictures
but they could look like
but until the day we can take real
snapshots astronomers will continue to
find clever ways
to export this growing catalog him world
the hidden universe is produced by the
Spitzer Science Center
California instituted
engine in Pasadena Spitzer Space
Telescope
shield is managed by nasa's jet
propulsion laboratory
