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I'm Carl Azuz announcing a major
scientific discovery today on CNN 10.
fridays are awesome okay maybe that's a
bit of fake news
but nasa's newest voyage of discovery
isn't
a rover that launched last july 30th was
scheduled to arrive on mars yesterday
and scientists were hoping that the
perseverance mission would help them
figure out if life was
ever present on the red planet the
mission's cost is 2.7 billion dollars
it was scheduled to last two years if
all goes as planned during that time the
perseverance rover is set to travel 15
miles
studying mars climate and geology and
collecting samples of martian soil that
could one day be brought back to earth
if another mission succeeds in sending a
spacecraft to pick them up
but we're getting ahead of ourselves the
rover first had to undergo an extensive
checkout period a kind of booting up on
mars
it had to unfold and download software
it's got to deploy a 23 million dollar
drone helicopter whose purpose is to
find out if
powered chopper flight is possible on
mars and before any of that could happen
perseverance had to make a safe landing
on the red planet
a preview of a perilous descent on the
red planet after months traveling
through space
it's what nasa describes as seven
minutes of terror
the u.s space agency's perseverance
mission plunges into the martian
atmosphere at over 19 thousand
kilometers an hour
it breaks with tremendous force lurching
downwards as it endures temperatures of
more than one thousand degrees celsius
then it deploys a parachute and at just
the right momentit releases a rover retro-rocketing
towards a treacherous terrain
that all has to happen in about seven
minutes and it all has to happen
autonomously this is one of the most
difficult maneuvers that we do
in the space business you know almost
50 of the spacecraft that have been sent
to the surface of mars
uh have failed and so we know we have
ourour work cut out for us if the daring
landing succeeds
nasa's perseverance rover will touch
down at jezreel crater the site of a
martian lake
more than 3.5 billion years ago their
perseverance will help prepare for human
life in the future
and search for signs of ancient life of
the past
it will also collect rock samples that
will hopefully return to earth for the
very first time
the two-year mission is unlike any other
made possible by discoveries from nasa's
four other rovers on mars
our journey has been from following the
water
to seeing whether this planet was
habitable
to finding complex chemicals
and now we're at the advent of an
entirely new phase
returning samples an aspirational goal
that has been with the science community
for decades perseverance also promises
new perspectives of the red planet
the rover's microphones and 23 cameras
can share sights and sounds never seen
or heard before
also along for the ride a drone-sized
helicopter named ingenuity
it'll be the first to try flying on
another planet the new technology may
help direct the perseverance rover or
even be a scout for future probes
as nasa's latest mission to mars charts
new realms of exploration
but as you heard a moment ago getting
the rover down safely is the tricky part
mars is about 127 million miles away
from earth
right now it takes 11 minutes for radio
signals to travel from earth to mars
and the perseverance rover landing
process was set to happen over
seven minutes that's why it had to
happen autonomously without scientists
manually making adjustments on its way
down
yesterday evening nasa said that
perseverance appeared to land safely on
the red planet
various spacecraft that nasa and the
european space agency have
in orbit over mars were set to fly over
the roverand check up on its health cnn.com will
have the latest
info on the mission status
10 second trivia what is america's
coldest city outside of alaska
grand forks north dakota fargo north
dakota international falls minnesota or
marquette michigan
once you get outside fairbanks alaska
the coldest city in the u.s
is grand forks north dakota
a historic blast of arctic air is
finally moving out of the united states
after unleashing a series of ice and
snow storms across the country
for those who are ready for winter to
end the good news is that forecasters
expect the jet stream to lift to the
northand what that means is that millions of
americans could feel warmer temperatures
by the weekend
but the hard-hit state of texas is still
reeling with many people still without
electricity
and or running water following a series
of deadly winter storms there
and more cold snowy weather could still
be ahead for the northern plains states
the upper midwest and the northeast
which is typical this time of year
there are some fascinating and frozen
side effects to all this
here's cnn 10 contributor tyler malden
i'm sure you've heard all about
blizzards in the polar vortex carl
but what about ice pancakes bites or
jams
well it's a thing and i'm suddenly
hungry too
but these are unappetizing and can cause
some realserious issues during the winter an ice
jam occurs when pieces of floating ice
build up
and block the flow of water in rivers
and streams in turn
causing the water to back up potentially
leading to flooding
for example earlier this month the
national weather service in detroit
had to issue a flood warning because an
ice jamwas causing water to flood homes and
businesses which could only be broken up
by the canadian and u.s coast guards ice
pancakestend to only be seen in the arctic but
when the temperature drops below zero in
the lower 48 for a few days
like what we're dealing with this week
well we can see it too
it occurs when a body of water starts to
form ice
chunks of ice will bump against each
other creating elliptical shaped
discs with round edges giving each one a
flat round appearance
hence the name ice pancakes ice balls
are more common than pancakes you can
actually see these every winter near
shorelines of colder climates
these form by getting caught in the
crashing waves near the edge of a beach
forcing them to continually spin over
and over and over
leading to a more spherical look lastly
and
this one is probably my favorite ice
volcanoes
ice volcanoes form over lakes by waves
forcing water or slush
to erupt high in the sky through mounds
of ice
it made for quite the scene last year
off of lake michigan
while we're on the subject of volcanoes
but talking about the hot kind now
what's probably the world's oldest
continuously active volcano erupted this
week
mount etna once again put on a fireworks
show in the italian island of sicily
lava fountain sprayed magma flowed ash
rained down
on the surrounding region there were no
reports of serious injuries or damage
but imagine waking up at one o'clock in
the morning and thinking it's raining
outsidewhen what you hear is actually ash
falling on your roof
that's how our friend sean mccarthy
described it he teaches with the
department of defense education activity
in sicily
and he sent us these pictures yesterday
close-up views of the magnificent mount
aetna
super swim brothers kind of sounds like
an underwater version of super mario
brothers
but on the bismarck high school boys
swim team in north dakota
12 of the 26 athletes are brothers as in
brothers specifically we're talking
about braxton isaac
austin garrett bennett bryce jackson
connor josiah micah blake and max
it's like cheaper by the dozen in the
pool and the competitive spirit's high
becausenone of these guys wants to lose to his
brother
does that threaten their brotherly love
they're still their brother's keeper
and while the goggles might have them
wondering oh brother where art thou
they're still there to help each brother
bear the brothersome burden of
competition saying brother let me be
your shelter
with the bond of brothers flowing
strongly through this band of brothers
oh brother today's shout out goes out to
qsi
international school of kishinaw moldova
thank you so much for watching and
subscribing to our youtube channel
have a great weekend everyone
I'm Carl Azuz for CNN