| Q. | What are the basics of Astronomy? | Related Search:
Astronomy & Space | | | Also "What are auroras"?
| | A. | The universe is huge but dumb and we are tiny but smart (in some ways) - but neither of us is infinitely large nor will either of us last forever. There are both scientific and humanistic lessons in this hard-won knowledge.
Auroras are the effect of charged particles from the sun being captured by the earth's magnetic field in the upper atmosphere, where they are absorbed and re-emitted in visible wavelengths. | | | |
| Q. | how to create an aurora? | Related Search:
Astronomy & Space | | | I need to do a project for my astronomy class and i was wondering if it were possible to create an aurora and if so how would i do it.
| | A. | attempt at generating synthetic images and animations of the aurora borealis employing high-performance computer workstation technology and some recent advances in the field of Computer Science, while at the same time incorporating very real auroral physics.
[Link]  >/
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The Aurora Alarm provides this service free of charge to nearly 1,000 users. The only system of its kind in the world, it uses data from a detector site in eastern Washington to alert users in real time when the aurora appears in the sky
[Link] >/ | | | |
| Q. | Aurora Borealis? | Related Search:
Astronomy & Space | | | I'm asking this question here, because I know the cause is closely related to astronomy.
I've heard that sightings of the aurora have been reported in New York, and probably even further south than that. I was wondering does anybody know when the next time that the aurora will be visible in NY? Is it something that comes around and is predictable (such as meteor showers), or is it something that is dependent upon other factors (like temperature)?
I have looked on the internet for information that may provide me with an answer, but I can't find anything!
If anyone knows, please let me know.
(It's on my list of things to see before I die =] Maybe I'm just weird!)
| | A. | basically they are impossible to predict any great time in advance. maybe an hour or a day at the most with advanced technology and satellite.
the auroras are caused by ionized particles from the sun. the sun shoots out a "wind" or "mist" of ionized particles constantly. those particles dont hit the main parts of earth because of the magnetic poles. instead at the poles they produce those lights you see in the sky, thats why they are usually only visible near the north and south poles. im assuming that when you saw them in NY there was a solar flare or something then shot off alot of particles towards earth. definately something that should happen atleast a few times in your life. | | | |
| Q. | Which of the following phenomenon on Earth is directly triggered by the solar activities? | Related Search:
Astronomy & Space | | | a) tsunami
b) earth quakes
c) high tides
d) aurora
e) meterorite shower
i chose earth quakes..i'm probably wrong..i'm so enthusiastic about astronomy!
| | A. | d) aurora..
The Earth is constantly immersed in the solar wind, a rarefied flow of hot plasma (gas of free electrons and positive ions) emitted by the Sun in all directions, a result of the million-degree heat of the Sun's outermost layer, the solar corona. The solar wind usually reaches Earth with a velocity around 400 km/s, density around 5 ions/cc and magnetic field intensity around 2–5 nT (nanoteslas; Earth's surface field is typically 30,000–50,000 nT). These are typical values. During magnetic storms, in particular, flows can be several times faster; the interplanetary magnetic field (IMF) may also be much stronger.
The IMF originates on the Sun, related to the field of sunspots, and its field lines (lines of force) are dragged out by the solar wind. That alone would tend to line them up in the Sun-Earth direction, but the rotation of the Sun skews them (at Earth) by about 45 degrees, so that field lines passing Earth may actually start near the western edge ("limb") of the visible sun.[4] | | | |
| Q. | some astronomy questions? HELP ASAP!? | Related Search:
Astronomy & Space | | | I have a take home test for astronomy and i need some answers..
Auroras are most frequent....
a. at sunspot maximum
b.at sunstop minimum
c.during the maunder minimum
d.at varied times - not related to the sunspot cycle
a planet moves faster in its orbit when it is _____.
a. closet to earth
b. farthest from the sun
c. at one of the foci
d.closest to the sun
stars brigther than a first magnitude star are identified by _____.
a. negative numbers
b.high positive numbers
c. lens
d. grating
Charge coupled devices (CCD) are sensitive and record as many as _____ percent of the photons that strike its surface.
a. 1
b.10
c.25
d.100
the magnifying power of telescope is primarily determined by the choice of a/an____.
a. objective
b. mount
c. location
d. tracking device
thanks so much everyone, if you can even answer one please do! I would finish these problems myself but i have a class to go threw.. its like a 100problem test and these were the ones i couldn't get, please don't guess...
| | A. | Not only are you supposed to do your own homework, you're especially supposed to do your own tests.
I must say, however, that the question about CCDs is just wrong. CCDs can have a photon efficiency that is typically 60%, so I don't know what to do about it. They certainly are not 100% efficient (95% would be extraordinarily high), and 25% is rather low.
Also, the magnifying power of a telescope is primarily determined by the choice of an eyepiece, so that question's poor as well, although "objective" is the answer they want.
The third question should really read "stars brighter than a zero magnitude star are identified by_____." | | | |
| Q. | Please answer these following questions related to Astronomy? | Related Search:
Astronomy & Space | | | Q1.)Who was the first man to set foot on the surface of the moon?
Q2.)Other than the Sun,what is the nearest star to the Earth?
Q3.)In distance,Which planet is sixth furthest from the Sun?
Q4.)How many years ago did the surface craters form on the moon?
When Neil Armstrong stepped onto the moon and said his famous pre-written line,he missed out an important word.What word was it?(N.B.:-His line was"One small step for man,one giant leap for mankind.")
Q5.)How many planets are there in our Solar system?
Q6.)Why is our sky blue?
Q7.)How do "Auroras" form?
Q8.)Is it possible to see the "MILKY WAY" in a dark night?
Q9.)How did the big craters in the moon form?
Q10.)What is Jupiter made of?
Q11.)Does Jupiter have rings around it?
| | A. | Q1.)Who was the first man to set foot on the surface of the moon? NEIL ARMSTRONG
Q2.)Other than the Sun,what is the nearest star to the Earth? PROXIMA CENTAURI
Q3.)In distance,Which planet is sixth furthest from the Sun?
JUPITER
Q4.)How many years ago did the surface craters form on the moon? MILLIONS
When Neil Armstrong stepped onto the moon and said his famous pre-written line,he missed out an important word.What word was it?(N.B.:-His line was"One small step for man,one giant leap for mankind.") "OH MY SAINTED AUNT"
Q5.)How many planets are there in our Solar system? 9 DISCOVERED SO FAR... "PLANET" IS NOT CLEARLY DEFINED
Q6.)Why is our sky blue? BLUE WAVELENGTH SCATTERED BY ATMOSPHERE OTHERS ABSORBED MORE
Q7.)How do "Auroras" form? IT IS AURORA PL WOULD BE AURORAE
Q8.)Is it possible to see the "MILKY WAY" in a dark night? IT IS POSSIBLE TO SEE MILKY WAY ON ANY DAY, PROVIDED YOU ARE IN THE RIGHT POSITION
Q9.)How did the big craters in the moon form? METERITE HITS
Q10.)What is Jupiter made of? STUFF
Q11.)Does Jupiter have rings around it? FAINT ONES | | | |
| Q. | Astronomy Review question please help? | Related Search:
Physics | | | The ____ show(s) an emission spectrum and is(are) caused by large electrical currents that flow into Earth's atmosphere near the north and south poles.
a.Van Allen belts
b.ozone layer
c.lithosphere
d.solar wind
e.aurora
| | A. | E | | | |
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