ScienceCasts: Fried Planets

Uploaded by NASAtelevision on 25.10.2012

fried planet presented price science at nasa
astronomers have just cut a star in the active devouring one of its planet
be depressed forty-eight seven forty
a red giant day observed using the nine point two meter
hobby and really telescope at the mcdonald observatory in texas
appears to have the fumes of escorts to planet intent atmosphere
this is consistent
for the rocky world recently destroyed
could the same thing happened to parents
yes indeed says alex involves him a member of the research team from penn
state university
a similar fit me await the inner planets in our solar system
when the sun becomes a red giant some five billion years from now
researchers who specialize in stellar evolution have long known that the
interplanetary in danger
the trouble starts from the distant future when the sun score runs out of
hydrogen fuel for nuclear fusion
to keep the fires burning
the sun will begin to fuse hydrogen outside the core
in a layer closer to the stellar surface
this will turn the sun into a red giant
at least two hundred times wider than it is today
Mercury Venus
and possibly even mars could be engulfed
the fate of earth is not a certainty however
some researchers believe that births or that night spiral outward
keeping the kind of had a safe distance from the approaching inferno
this could happen if solar winds carry away a significant fraction of the sun's
mass in the years leading up to the red giant pays
on the other hand
the sunlight expands so quickly at our planet has no chance to escape
earth would get caught in the sun is rapidly advancing atmosphere
and spiral inward to oblivion
observations of red giant be depressed forty eight seven forty
lend credence to the second possibility
are detailed spectroscopic analysis and be depressed forty eight seven forty
reveals that the red giant contained an abnormally high amount of the p m
says monica item off who led the study and nicolas cooker nicotine adversity
and taryn poland
because we live here is the easily destroyed and stars finding lots of it
in an all dread giant is unexpected
the most likely source is a planet
both sent explains
it is probable that the lithium production in be depressed forty eight
seven forty
was triggered by a mask the size of the planet
that spiraled into the star and heated up while the star was digesting it
the team found another piece of evidence to
bt close forty eight seven forty
hasn't gastonia planet
one point six times bigger than jupiter which has not yet been devoured
the big planet has a highly elliptical or dead
in fact it is the most elliptical orbit ever found for a planet around an older
it's orbit which almost surely started out circular was probably altered by
some catastrophic event
like it starr having inner planet for lunch
one day he says our own solar system may end up the same way
and five billion years tough ride planet could be here
until then for breaking science news stay tuned two scientists dot nasa dot