Is space trying to kill us? - Ron Shaneyfelt

Da li svemir pokušava da nas ubije? - Ron Šejnifelt (Ron Shaneyfelt)

Translator: Andrea McDonough Reviewer: Jessica Ruby

Prevodilac: Tijana Mihajlović Lektor: Mile Živković

There are still lots of things about space

Postoji još mnogo stvari o svemiru

that we may never be able to answer,

na koje možda nikad nećemo moći da odgovorimo,

like is time travel possible?

kao što je da li je moguće putovati kroz vreme

Or are aliens living somewhere else in the Milky Way?

ili da li vanzemaljci žive negde u Mlečnom putu.

But there is one thing I believe about space:

Postoji, međutim, jedna stvar u koju verujem u vezi sa svemirom -

Space is trying to kill me.

svemir pokušava da me ubije.

Space isn't out to get me personally.

Svemir neće da sredi mene lično.

It's also trying to kill you and everybody else.

Pokušava da ubije i vas, i sve ostale.

Think about it.

Razmislite o tome.

Space doesn't naturally have what we need to survive

Svemir prirodno nema ono što nam treba da preživimo

when we travel there:

dok putujemo njime:

no air,

nema vazduha,

it's too hot

previše je vreo

or too cold,

ili previše hladan,

no ozone to protect us from those nasty UV rays, either.

nema ni ozona da nas zaštiti od groznih UV zraka.

This all sounds bad,

Sve ovo zvuči loše,

but what can space really do to me

ali šta mi svemir zaista može uraditi

if I stay on Earth?

ako ostanem na Zemlji?

What we need to understand is that objects in space

Treba da razumemo da objekti u svemiru

can cause people to think their days are numbered,

mogu da prouzrokuju da ljudi misle

da su im dani odbrojani,

even when there are events on Earth

čak i kada na Zemlji postoje događaji

that can hurt or kill us

koji mogu da nas povrede ili ubiju

before something from space does.

pre nego što to učini nešto iz svemira.

So, what are the odds that one of these objects

Pa, kakve su šanse da jedan od ovih objekata

will really affect Earth

zaista pogodi Zemlju

and you

i vas

and me

i mene

in our lifetime?

za vreme našeg životnog veka?

Well, we can take what we know about the universe

Pa, možemo se poslužiti onim što znamo o svemiru

to try and figure that out.

da bismo pokušali da to shvatimo.

You might have heard stories

Možda ste čuli priče

about asteroids hitting the Earth.

o asteroidima koji udaraju u Zemlju.

That would be pretty bad.

To bi bilo prilično loše.

Scientists think asteroids might have killed off

Naučnici misle da su asteroidi možda izbrisali

most of the dinosaurs.

većinu dinosaurusa.

Sounds like something we should worry about, right?

Zvuči kao nešto oko čega bi trebalo da brinemo, zar ne?

Well, astronomers can now watch asteroids in space

Astronomi sada mogu da posmatraju asteroide u svemiru

and see them coming using complex computer models

i vide ih kako se približavaju kroz složene kompjuterske modele

to predict the deadly rock's path.

da bi predvideli smrtonosnu putanju te stene.

For a while, the reported odds

Neko vreme, objavljene šanse

that asteroid Apophis would strike Earth in 2036

da će asteroid Apofis udariti u Zemlju 2036. godine

were once 1 in 625.

bile su 1: 625,

But, after updating their data,

ali posle ažuriranja podataka,

astronomers now say the chances are extremely low.

astronomi sada izjavljuju da su šanse veoma male.

Okay, what about the sun?

Dobro, šta je sa Suncem?

Hollywood movies like to pick on our sun

Holivudski filmovi vole da nam prozivaju Sunce

by showing Earth destroyed by solar flares

tako što prikazuju da Zemlju uništavaju Sunčeve baklje

or the sun dying out,

ili da se Sunce gasi,

which would cause Earth to freeze.

što bi prouzrokovalo da se Zemlja okuje ledom.

Astronomers predict our sun contains enough gas

Astronomi predviđaju da naše Sunce sadrži dovoljno gasa

to make energy for another 3 to 5 billion years.

da proizvodi energiju još narednih 3 do 5 milijardi godina.

So, in 3 to 5 billion years,

Dakle, u 3 do 5 milijardi godina,

ako ljudi nastave da postoje na Zemlji,

if people still exist on Earth,

they'll have to deal with that.

moraće da se nose sa tim.

But today, well, we're safe.

Ali sada smo, pa, sigurni.

Sometimes the sun does shoot flares at Earth,

Ponekad Sunce zaista ispaljuje baklje prema Zemlji,

but the magnetic fields surrounding our planet

ali magnetna polja koja okružuju našu planetu

blocks most of that radiation.

blokiraju većinu tog zračenja.

The radiation that does get through

Zračenje koje se ipak probije

creates things like the Aurora Borealis.

stvara stvari kao što je aurora borealis.

Gigantic solar flares can mess with our satellites

Gigantske Sunčeve baklje mogu da naprave zbrku našim satelitima

and electrical equipment,

i električnoj opremi,

but the chances of it killing you are pretty slim.

ali verovatnoća da će vas ubiti je prilično mala.

Okay, what about that supermassive black hole

Dobro, a šta je sa supermasivnom crnom rupom

in the middle of our galaxy?

u središtu naše galaksije?

What happens to Earth,

Šta će se desiti Zemlji

and us,

i nama

when it pulls us in?

kada nas uvuče unutra?

After all, it is supermassive.

Na kraju krajeva, supermasivna je.

Nope, not going to happen.

Jok, to se neće desiti.

That's one big object that can't bother us.

To je jedan veliki objekat koji nam neće ništa uraditi.

How can we be so sure?

Kako možemo biti toliko sigurni?

Our solar system is on the edge of the Milky Way

Naš Sunčev sistem je na rubu Mlečnog puta,

while the nearest supermassive black hole

dok je najbliža supermasivna crna rupa

is about 26,000 light years from Earth.

udaljena oko 26 000 svetlosnih godina od Zemlje.

That means we aren't on that black hole's menu.

To znači da nismo na meniju te crne rupe.

So, you still think space objects are trying to kill you

Još uvek mislite da svemirski objekti pokušavaju da vas ubiju

even after what I've told you so far?

čak i pošto sam vam rekao ovoliko stvari?

I think I've even convinced myself

Mislim da sam i sam sebe ubedio

that odds are really good

da su šanse stvarno dobre

that space and the objects up there

da me svemir i objekti u njemu

won't kill me after all.

neće ubiti na kraju.

But I'll probably keep looking up

Ipak, verovatno ću nastaviti da gledam naviše

just to make sure nothing is headed my way.

čisto da bih bio siguran da se ništa nije zaputilo ka meni.