aliens

for how big the universe is i find it hard to believe that we are the only intellegent life out there but if there was, i think we would have found out by now. so no, i don't think there are aliens. plus i think the drake equation is a bunch of crap and that dude just made it up.

post on 6 videos

the steady state theory of the universe is that the universe was always there and always will be there.microwave radiation helped show that the universe was formed and wasn't always there.cosmic radiation in the universe is like an echo that the telescope cobe was able to piece together to see what the early universe looked like.Wmap and CBI were created later to get a clearer picture. We found out that iron wasn't around before the big bang and we don't know where it came from.

picture blog hdfn

billions and bilions of galaxys are in the universe. the hdf s took ten days to send enough light to get a picture the hdf n took eleven days. light from the deep field takes 2 to 10 billion years to reach us. since the light takes so long to get here, we are seeing the objcts as they were 2 to 10 billion years ago. the hdfs and hdfn pretty much look the same.

astronomers agree that the universe pretty much looks the same in all directions even though they only have images of the north and south. using a computer is the best way to avoid biased selections.

it is very hard to avoid being biased.

A) No
B) It's almost dead
C) No it cannot
D) The most common type of star in the galaxy
E) They all go through a cycle

It helped us know that all stars develop into black holes. It talked about the mass and time graph scale. It showed the life of a whole bunch of different stars. And the eaglenebula is where the stars are born.

1 the event horizen is the middle of the hole. once ur there, you're stuck. the accelleration to get away from one has to be faster than the speed of light.
2 the escape velocity has to do with the size of the object and its mass, if the object is small and has a lot of mass, you will need nore velocity to escape it. that also describes a black hole. the speed of light is not enough to escape it.
3 the escape velocity must be very high if the size of the black hole is small with a very high mass. light gets bent if it passes to close to a black hole.
4. stellar black holes are created by dying stars super massive black holes are in the middle of a galaxy.
5. they thought black holes were invisible stars.
6.uses the stis to use infrared visible and near ultrviolet light.
7.the volume of a black hole is huge-false
black holes will eventually destroy the universe-false

if i had to choose to do something to do for the rest of my life, i would try yo be the best army ranger in the world, i would try to work my way up in rank and try to be remembered as the greatest general ever.

it's the end of the world as we know it

i don't think we have to worry about any solar flares because if we haven't been destroyed by one yet, then we probably never will. and ma powell says that it probably wont happen so thats another good reason.

asteroids

i think we should be fairly concerned because if we know that an asteroid is comming, we can evacuate the people it is going to affect.
take tanguska for example, if we would have known that a huge bomb thing was going to hit, we could have gotton the people to saftey. we could completly avoid the affects of a shoemaker levy 9 asteroid because if we know it's coming, we could possibly destroy it or evacuate the people.
On the other hand, they say once every million years a football field or larger sized asteroid threatens earth. and if we can't fix that problem like they did on armageddon, then we are screwed.

pangea-means one land, scientist believe that the continents were once one big land mass
sea floor spreading- two sea floors are spreading apart makes the ocean bigger.
plate boundries- the edges of the plates
the ring of fire-where all of the volcanoes are
the mid-ocean ridge-the biggest maountain range in the world, tallest too, and it's underground
shifting north and south pole-north and south pole switch once every 100,000 years don't know why

extinct volcanoes on the moon tell us that the moon's crust isn't moving
active volcanoes on mars tell us that the crust is still moving

Dubo-shifts 4.26 mm a year
HILO-35.77mm year
KELY-11.23mm a year
HOFN-14.87 mm a year

it tells us they are slowely moving

rotation of the earth-caused the earth to wobble slightly on it's axes, also shortened the day by 2.6 micro seconds


shape of the earth - The momentum of the water displaced by tectonic uplift had also dragged massive slabs of rock, each weighing millions of tons, as far as 10 km (7 mi) across the seabed


shape of ocean where it originated there was a sudden vertical rise in the sea bed.


energy released-the same as 26.3 megatons of tnt.

three pieces of evidence for his idea for plate techtonics
1. the continents fit together like a puzzle
2. found fossils of animals that couldnot have survived unless the contenents were connected
3. found fossils of tropical plants in antarctica

mercury movie and facts

http://www.youtube.com/watch?v=Cfl7dlEowoA&feature=related
it's the closest planet to the sun
it takes 88 days to orbit the sun
it has no moons and it's heavy
lots of craters
it has a heavy iron core and sillicate surface

info on the rest of the moons

a( periods of the four moons
b( the graphical pictures attained
c( difficulty gallileo had seeing it
c( how mini system helped gallileo form heliocentric views
Lo takes 25 days to travel around jupiter, Europa takes 3 days to travel around, Ganymede takes 7 days, and Callisto takes 15 days
Thy graphics, like the wave lengths, show the shape of the orbits, the more symmetric the wavelengths the more circular the orbits are. To gallileo, it would have looked like the moons were just moving back and forth. seeing the moons go around jupiter gave the idea to gallileo that a solar system could revolve around the sun

data on jupiter's moon

Callistio is the furthest moon from jupiter. we can tell because it has the highest waves. it also has a very circular orbit, i can tell because the wave shapes are very even.
Lo is the closest moon to jupiter. we can tell because the wavelengths are very short. it's orbit is not circular because the wavelengths are sparratic.

i thought the lab was fun. i learned how mass affects the orbits. in the clip i noticed there is a huge diff in size of planets. but venus and earth are the same size.

they were around in the 19th century

they discovered that nuclear reactions generate stellar energy

http://images.google.com/imgres?imgurl=http://archive.sciencewatch.com/interviews/john_bahcall_big.jpg&imgrefurl=http://www.sciencewatch.com/interviews/john-n-bahcall.htm&h=250&w=219&sz=15&hl=en&start=1&usg=__9lghd9Pwd5ndu5rWE82OsLw3Tf8=&tbnid=L_CnCIC9AGwJKM:&tbnh=111&tbnw=97&prev=/images%3Fq%3DRay%2Bdavis%2Bjohn%2Bbahcall%26hl%3Den%26safe%3Dactive%26rlz%3D1T4RNWN_enUS260

S. Chand developed a theory of white dwarf stars

he was born in 1910 and died in 1995

http://images.google.com/imgres?imgurl=http://charm.physics.ucsb.edu/people/hnn/Chandrasekhar.jpg&imgrefurl=http://www.phys-astro.sonoma.edu/brucemedalists/Chandrasekhar/Chandrasekhar.html&h=326&w=268&sz=8&hl=en&start=8&usg=__uvzzxRJSazGv28Qtw6EpP1SAZ5Y=&tbnid=6bPrC9g-gflafM:&tbnh=118&tbnw=97&prev=/images%3Fq%3Ds.%2BChandrasekhar%26hl%3Den%26safe%3Dactive%26rlz%3D1T4RNWN_enUS260

Arno was born in 1933 he is still alive

Robert was born in 1936 he is still alive

They say they found radiation left over from the big bang

http://www.bnsc.gov.uk/lzcontent.aspx?nid=4728

Annie Cannon was born in 1863 and died in 1941

she classified stars in the southern spectra

http://www.wellesley.edu/Astronomy/Annie/career.html

Clyde Tombaugh was born in 1906 and died in 1997

he discovered Pluto

http://www.klx.com/clyde/

Johannes Kepler was born in 1571 and died in 1630

he was the first to correctly explain planitary motion

http://kepler.nasa.gov/johannes/

Albert Einstein was born in 1879 and died in 1955

he made atomic bomb and discovered E=Mc squared

http://nobelprize.org/nobel_prizes/physics/laureates/1921/einstein-bio.html

Edwin Hubble was born in 1889 and died in 1953

showed that the universe is expanding and is considered to be the father of observational cosmology

http://www.edwinhubble.com/

isaac newton was alive from 1643 to 1727

he made discoveries about gravity

http://galileoandeinstein.physics.virginia.edu/lectures/newton.html

The first half of my project

Powell, you can find it here at http://isaachoffmann.blogspot.com/ The rest of my class will be on this blog, and I linked to your home page..