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Mono,
WI | Gravity
# 1 If there is no way to prove gravity exists, why do we teach
the theory that is most popular? There are other theories, but they
don't get their share of the glory.
#
2 Current theory says that the universe is expanding. If that's
true. What is outside the universe?
# 3 I want to be an astronaut, but I am a Cherokee, and there has
never been a Native American astronaut. Does that mean I won't be
able to go to Space?
Dragonfly
| Gravity...reply
#
1 There is a strong research program underway by sociologists of
science to try to understand this question. Sociologists such as
Steven Shapin and Simon Schaffer are among those who take the point
of view that social and cultural forces determine why a science
theory becomes accepted, rather than scientific arguments.
# 2 Many scientists would say this is a meaningless question in
science, precisely because it is a question that cannot be tested
experimentally. That makes it a philosophical or metaphysical question.
That doesn’t mean it is not an interesting question, however.
# 3 Well, actually John Bennett Herrington is a Chickasaw who was
on the November 2002 shuttle mission. You can read about him at
http://www.spacetoday.org/Astronauts/NativeAmerican.html. I am confident
that if you worked hard and stayed in school as he did that you
could have a chance to be an astronaut, too.
Chelsea, 9, WY | Blue Sky?
Why is the sky blue? Why is the grass green?
Lucy, KC
| Blue
Sky?...reply
I don't know why the sky is blue. I think I know why the grass is
green. In tree leaves there is this stuff called_ _ _ _{I don't
know the egzact word} that helps trees get in carbon dioxside and
out oxigin. That stuff is also green. So maybe that's kinda how
grass is green.. Bye! Bye! Bye!! lUcY
Idove, NJ | Math
why do astronauts need to study math
Sara, ON | Space
camp is cool!
i just went to space camp canada an it was so cool i really want
to know what i need to take to become an astronaut because it so
very cool
Jamie, 11, KY | Astronomy
is cool!
Astronomy is so cool! This past week I went to a science museum
for a series of workshops. One of them was called "Hubble Images
of the Infinate". It was in the planetarium and was all about
the Hubble telescope. When I was in the planetarium it felt like
I was under the night sky! It was so awesome!
Mark & Gayle, FL | Space
Shuttle Columbia
We are also very sad to here of this news this morning about the
space shuttel and by what has happened, I realy hope all is reviled
from the data recorder onboard the S.S.C. Our thoughs and prays
go out to those who lost their lives and to those who lost members
of their family's
god be with us all.
Dylan, 3, FL | Gravity
why does gravity hold stuff down?.
Chaks,11 MD | Diving Degree
What is the exactly diving degree when the spaceship
enter into the Earth atmospere?
if the degree is wrong,what happen then?
DragonflyTV
| Diving Degree response
The nose of the shuttle has to be held up at an angle of approximately 40 degrees.
The shuttle is travelling at a speed of around 17,000 miles per hour as it
re-enters the atmosphere. The angle is important because at that speed the
surface of the shuttle reaches 3,000 degrees Fahrenheit, and the "belly" of
the shuttle is covered with protective tiles. If the shuttle entered at a different
angle, some other part of the shuttle surface without the tiles would get too
hot, and there could be big trouble.
Lacey,
8, BC | Big
Sun
Over a million Earths could fit inside the Sun.
Devin, 13, LA | Astronauts
need math?
Why do astronaut need to study mathematics
Mary, 11, NY | Ticket
to the Moon
i wish i coood get a one way tiket to the mooi must be nice and
quiet up thair. i love to look at the moon with my tellacop
Madalyn, 6, NJ
| Asteroids
if you are taking a rocket ship to outer space you have to be carful
not to bump into asteriods.
Cassandra, 7 | Space
What's in space
Dan, 9, AK | Three
more cheers for Saturn
I like Saturn because its cool.
Dan, 9, BC | Three
cheers for Saturn
I like Saturn
Job, 14, CA | Fly the shuttle
HOw do you drive a shuttleHow do we drive the shuttle?
Willie
McCool, Pilot, NASA| Fly the shuttle response
The
shuttle cockpit looks similar to the cockpit of an airliner, with
a control stick for both the Commander and the Pilot. Either crew
member can fly the vehicle. During ascent and re-entry, the Shuttle
is in
'auto-pilot', using it's computers to automatically guide the vehicle
into orbit or to a re-entry for landing. The Commander or the Pilot
can take over and fly manually, using the control stick, if the
automatic system
fails.The final portion of landing, from Mach 1 to touchdown, is
flown manually, just like flying an aircraft without engines (the
Shuttle does not have engines for the entry through the atmosphere
to the landing site). We use control stick inputs to bank left and
right, or pitch up and down, just like in an airplane. Inputs are
made to manage our energy, so as to reach the landing site at a
precise airspeed and altitude. Our dive angle to the runway is very
steep (18-20 degrees). Then, at 2000 ft above the ground, we pitch
the nose up from our steep dive, into a final flare to slow down
the descent rate and airspeed. The Shuttle touches down at 205 knots,
then the Pilot deploys a 'drag chute', that helps the Shuttle slow
to a stop on the runway.On orbit, the Space Shuttle is not flown
like an airplane. We use the control stick; but we also use a 'thrust
hand controller' to adjust the Vehicle's orientation to the earth,
stars, other satellites, etc. We also do some automated firings
from the two Orbital Maneuver Engines and the many Reaction Control
System jets that allow us to make our orbit altitude higher or lower,
and to help us to rendezvous with other vehicles, like the International
Space Station. It's somewhat complicated because there is no gravity
or air resistance.I hope this helps you to understand how the Space
Shuttle is flown.
DragonflyTV
| Fly the shuttle response
Thanks to Commander Willie McCool for responding to Job's question! He'll
be flying on a space shuttle mission in July, 2002.
Kayla, 13, NY | Mass
of the Earth
what instroment do you use to measure the earth's mass?
Bob, 10, CO | Solar system
space has nine planets.there is only one star in space and that
is the sun.
DragonflyTV
| Solar system repsonse
I think you probably mean that our solar system has nine planets
and one star. There are many many stars and planets in space, but
we only know about a fraction of them.
Tayler, 8 , CA | I
Love Space
well i love space
Alissa,
10, Connecticut | Astronaut training
I love space travel. What do I need to study to become an astronaut?
Andy, 11, Virginia | Astronaut
training response
To enter astronaut training you must be in excellent physical condition.
You also need a bachelor's degree in engineering, science or mathematics,
and three years of related experience. To be a pilot astronaut you
also need 1,000 hours pilot-in-command time in jet aircraft.
Rich, 12, Louisianna | Space
food and toilets
What do astronauts really eat? And how do they go to the bathroom?
Will,
11, Tennessee | Space
food and toilets response
There is no refrigerator on the space station, but there is a stove.
Astronauts eat mostly dried foods, but they also have canned foods
and some fresh foods like fruit. As for the toilet, there is a new
Waste Collection System on board. Since there is no gravity to make
feces and urine drop, these toilets use an air flow system to push
the waste down. The remains are freeze-dried and brought back to
earth for analysis and disposal.
Hannah, 11, MN | Black Holes?
Does anyone know where a "Black Hole" leads to?
Chelsea, 9, WY | Blue Sky?
Why is the sky blue? Why is the grass green?
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