Astronomers crack exploding star mystery
TUCSON. Arir. (AP) Aided bv
supercomputer calculations. astronomers
arn finally solving the pu/iele of what
causes supernovae. powerful exploding
stars that create the elements that make
life possible.
Astronomers have been stymied for
decades in explaining what makes \or\
large stars explode at the end of their life
time. The process was simply too com
plex for chalkboard formulae
But new supercomputers, capable of
running millions of calculations a set -
ond, have enabled astronomers to create
mathematical model* that explain the
mi< ntMH endlong changes that ik air a* a
star JO time* the sire of the tun suddenly
goes supernova*
In presentations on Monday to the
national meeting of the Amerii an Astro
nomical Association. teams of
astronomers showed computer-driven
graphics of the pro*.esse* happening
inside a supernova*?
With the computer calculations, the
astronomers cranked in convection and
two-dimensional action within the explo
sion and found that filaments of cold gas
it roamed bat k toward th«i star's tort*,
became superheated and then exploded
outward Alt within a fractional second
Matter simultaneously streams toward
and away from the t ore and such circula
tion of material happens to be i rut tally
important for the explosion." said Mart
Iterant, an astrophysicist at the l.os
National 1-abotatorv
Supernovae originate from stars eight
to 10 times the sire of the sun After shin
ing for millions of years, the star's unclear
fuel is exhausted and there is not enough
outflowing heat to keep the star's mass
suspended above the core. The star col
lapses inward and the core, about the sire
of tfm sun. shrinks within second* to
about 20 miles leniperatures soar to bil
lions of degrees and neutrinos, a type of
subatomic partii le, erupt outward
(his m the shell, streaming inward
l«-i ouse of the i ollapse, is heated by the
neutrinos and then erupts outward, rather
like bubbles rising from water being heat
ed on a stove
Within a frm lion of a se< ond, the gas is
heated to a point that it explodes, blow
ing off the outer layers of the star
5 people killed in crash
in Arkansas on Monday
MENIFEE, Ark (AP) —
Truck drivers crossing
Arkansas under clear skies
before dawn Monday ran into
a “wall of fog" that caused a
nine-vehicle pileup. Five peo
ple were killed.
Truckers issued warnings
on their citizens hand radios
that prevented more vehicles
from plowing into the burning
wreckage on Interstate 40,
about 30 miles northwest of
Little Roc k
"When we got out. all we
could hear was screaming and
hollering." said John Oakes of
Pearishurg. Va.,a passenger in
a truck that missed the pileup
"They were screaming bloody
murder."
Fight tractor-trailers and a
minivan were involved in the
accident, police said. The van
wasn't found until nine hours
after the 2 am. accident, in a
heap of smoldering 10-wheel
ors
"We believe everyone is
accounted for,” said Ted Gip
son of the Office of Emergenc y
Services in Conway Countv.
"There is still a pair of small
shoes over there that we're
concerned about."
The dead were identified as
truckers Delbert Costa. 53, and
Gregg Lawrence, 39, Fort
Smith men riding in the same
truc k; trucker William Lewm
of Soon v. trucker Donald Otto
Saleh, 31, of Woodsboro,
Texas; and telephone compa
ny employee Jeff Satterfield of
Little Roi k Another trucker
was treated ami released from
a hospital.
Nearly all identifying marks
had been burned from (be
trucks, making identification
of the victims difficult Two
of the trai tor-trailers were
hauling cattle, and injured ani
mals limped amid emergent v
workers
Two trucks were carrying
hardware, including i nns of
paint .that periodit ally
exploded. Other trucks were
carrying scrap iron, lumber
and newsprint.
"We were coming down
the road and all of a sudden
we ran into a wall of fog. I hit
the left lane and hit the
brakes," said truck driver
Walt Bums of Dublin. Va Ills
truck stopped in the median
"It was clear The next
thing you know — pow!
zero visibility,” Gipson said
Burns broadcast a warning
to other truckers, then made a
futile attempt to extinguish
the flames with a fire extin
guisher. "It was like taking a
jat kknife to a machine-gun
fight. There was just nothing
we could do,” Burns said.
National Weather Service
forei asts had said that patch
es of fog were possible along
the Arkansas River Valiev
overnight. Forecaster Greg
Meffert said that conditions
didn't warrant a warning of
hazardous travel
Do you fit the bill?
We’re looking for a few good ducks to he
Resident Assistants in the Residence Halls
for the 1995-96 Academic Year.
You must aitcml one of (fur following informational meetings
Tuesday Jan It) 7 p m Gold Room (Carson Hall)
Wednesday Jan II 7 pm Riley Hall (1 Ith <St Patterson)
Thursday Jan 12 3 p.m Ben Linder Room (EMU)
Tuesday Jan 17 7pm Ramey Room (Hamilton Caf )
Sec the University Housing advertisement in the classifieds
for further information if you think you "fit the hill"
Applications available at main Housing office. Walton Hall
It. I -«
Clinic gunman held without bail
HKOOM.1NF. Mas*. (AP)
lint man accused of opening fire
on two abortion i limes. killing
two woman and wounding ftv*>
ot her poop la w as ordered held
without hail today after pleading
innot ent to murder charges
In addition to the two murder
charges, John C Salvi III. 2>.
entered the innot unt plea to five
counts of armed assault with
intent to murder
In arguing for no bail, Norfolk
County Assistant District Attor
ney John Kivlan said Salvi had
planned the killing's for months,
purchasing weapons and mak
ing himself familiar with the
layout of abortion clinics He
also noted that one of the two
receptionists killed, l ee Ann
No hols, had been shot nine
times.
Kivlan described the shoot
ings as acts of "extreme a trot ity
and cruelty."
J W Carney. Salvi's court
appointed attorney, asked for
bail, hut Distrn t Court Judge
Herbert Goodwin denied the
request. The judge said he
would hear arguments for the
sotting of Iwd at a later dale
A pretrial hearing w as set for
Fell 1
Salvi stared va< antly through
out today's hearing, his eyes
often cast down.
Neither prosecutors nor the
defense would comment on pos
sible strategies in the case,
which is being investigated by a
grand jury
In particular, Carney would
not comment about Salvt's pos
sible use of an insanity defense
I think ihiii this case will
turn to be much more compli
cated than people look at it
now." Carney added ' Hu's ha.I
extraordinary beliefs based in
large measure on his sincerely
held religious feelings
I here were several pro-choice
advocates outside the court
house. but there were no
demonstrations by any anti
abortionists
Meanwhile, the clinics where
the shootings occurred were
starting to see patients again
Preterm Health Serve es told
patients seeking gynecologii al
exams to come in today, hut was
not yet offering abortions The
other clinic attacked in this
Boston suburb. Planned Parent
hOOd, reopened 1 rtda\ behind
metal deter tors and extra
guards.
-Salvt, a devout Roman
Catholic and student hairdresser
from Hampton. N II , allegedly
killed the clinics' receptionists
and wounded five others Dec.
30. Salvl has already pleaded
innocent to federal firearms
< barges in Boston, and is
charged in Virginia with shoot
ing out the glass doors of a
building where abortions are
performed in Norfolk. Va , on
Dss 31 Ho was arrested shortly
thereafter.
Most of the staff and volun
tiHirs at Preterm Health Serve es
have a spirit of renewed dedi
cation." said a spokeswoman.
Sue. who would not give her last
name for se, urtty reasons. Still,
"there are some who may let
taking some days to think
about whether they'll return,"
she said.
Sum wouldn't say when lilt*
clinic would resume abortions,
I’ltimwl Parenthood already
has performed nhortions, offi
cial* said Workers were s< a red.
hui the petieota appeared to be
reassured by the increased sec ri
my, said N’h ki Ntc hols (nimble,
president of the Planned Parent*
hood league of Massac husetts
At Sunday Mass, the Rev )
Dale of St Pious X ( atholii
Church m Norfolk urged ins
parishioners to stop protesting
outside the Millt rest Clinic,
where the Virginia shooting
occurred, or taking part in any
demonstrations "whit h might
he pert eived as supportive of
the violent elements in the pro
life movement,"
(Cardinal Bernard J aw In
Boston also i ailed for a hall to
clinic protests in response to the
killings But in New York. Car
dinal John O'Connor said during
Sunday Mass that nonviolent
prayer vigils outside clinics
should continue
Also Sunday, sis members of
Congress demanded increased
federal funds to protec t abortion
providers and investigate vio
lent anti abortion groups
In a letter to Attorney (General
Janet Reno, the group called for
an investigation of 22 organiza
tions whose members signed a
petition referring to the murder
of abortion providers as "justifi
able homicide "
The jietition was circulated by
Paul Hill, convicted of killing a
doctor and his escort at a Pen
sacola abortion clinic last July
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