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Solar System Online QuestChatSeptember 28, 2000
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[ Oran/NASAChatHost - 4 -
10:57:20 ]
Hello to our early arriving chat participants. We will begin today's NASA Quest
Solar System Online chat with Sten Odenwald in just a few minutes. Be sure you
have read Sten's profile at http://quest.nasa.gov/sso/team/odenwald.html
to prepare your questions.
[ Oran/NASAChatHost - 5
- 11:00:13 ]
We will post a few questions at a time to help Sten keep up during the chat.
At the conclusion of today's chat, be sure to send us your comments and suggestions
at http://quest.nasa.gov/activities/chats/feedback.html
[ Oran/NASAChatHost - 6
- 11:02:28 ]
Hello and welcome to today's NASA Quest Solar System Online chat with Sten Odenwald.
Sten is here and ready to receive your questions. Take it away, Sten!
[ StenOdenwald/Astronomer
- 10 - 11:04:14 ]
RE: [sahil] CAN TOU TELL ME THE NAMES OF
6 NEW PLANETS FOUND IN SOLAR SYSTEM
Hi. There have not been any new planets found in our solar system. There have
been planets found orbiting other stars, though. Is that what you mean?
[ StenOdenwald/Astronomer
- 12 - 11:06:27 ]
RE: [EMILIO] HelloMr.Sten OdenWald I have
a question very important for me. I am Amateur astronomer and always my question
was ÀIs possible before Big-Bang all material was into a supermasive black-hole
and it last in a aleatorie moment explosioned and all it material expanded on
this Universe? The supermasive Black Hole would have been in another paralell
Universe and a white hole expanded your dense material in our Universe. Thanks
very much
It is probably impossible to know for sure what physical conditions...if any...
were involved. The problem is that from where we are we see the Big Bang as
the 'event' which created time itself, so logically we can't talk about things
hapenning 'before' time existed. We dont know what to call it.
[ StenOdenwald/Astronomer
- 13 - 11:09:26 ]
RE: [Arthur/MSH] Greetings Mr. Odenwald,
I am a Junior in High School. What advice can you give to someone who's dream
is to work for NASA?
There are many ways to do this, but where you are right now, you should strive
to do well in all of your subjects, math, science, english. You will need to
be very competent in all these things to take the college courses you need to
get into the 'space industry'. You need to keep motivated, and enthusiastic
about space...read science fiction...build a telescope...get pumped up!
[ StenOdenwald/Astronomer
- 14 - 11:11:42 ]
RE: [sahil] DO YOU THINK OUR PLANET MARS
WILL BE CONTAINING WATER AND OXYGEN? CAN HUMANS LIVE ON THAT PLANET? IS THE
TEMPERATURE SUITABLE FOR THEM?
It doesnt contain a thick enough atmosphere to breathe...its carbon dioxide
anyway. It looks like there might even be water below the surface, if we can
believe the pictures NASA's Mars Surveyor showed us last summer. We could probably
live there in a pressure dome, and grow what we need.
[ StenOdenwald/Astronomer
- 18 - 11:18:55 ]
RE: [Oran/NASAChatHost]
Sten, of the many observatories on Earth, are there some with telescopes
that give us better views of space than others?
Yes, in Hawaii the Keck telescopes let us look great distances to see galaxies
near the edge of the visible universe, but no matter what you look at from the
ground, things are still blurred from the atmosphere. There has been some work
to get rid of this blurring by the atmosphere, but it only really works on the
brightest stars and planets.
[ StenOdenwald/Astronomer
- 20 - 11:21:06 ]
RE: [EMILIO] Hi, Sten Odenwald, ÀOur Universe
are expanding but others zones o parts are contracting, for example looking
by spectre the galaxy M31-Andromeda in a few billions years will crash with
Away milk Galaxy, then ÀWhy not is uniform all this expansion in the Universe?
Thanks very much
Because the gravity which forces the galaxies together...produced by their own
mass...is stronger than the gravity from the rest of the matter in the universe
so galaxies still collide.
[ StenOdenwald/Astronomer
- 22 - 11:23:15 ]
RE: [EMILIO] Mr Sten, why is the cause by the
planet Venus not rotate like the others 8 planets? Thanks
We don't know for sure, but we do know that it is the rule, not the exception,
that a planet doesn't rotate with its axis perpendicular to its orbit plane.
If a planet grew by absorbing asteroids and other large objects billions of
years ago, the collisions could easily have tilted the axis in just about any
direction. We will never be able to recreate the exact conditions for each planet.
[ StenOdenwald/Astronomer
- 23 - 11:24:47 ]
RE: [Oran/NASAChatHost]
Thanks, Sten. To what degree does the Hubble Space Telescope (HST) view the
same distance better?
Right now Keck and HST are running neck-to-neck even though Keck is a much larger
telescope, atmospheric distortion can't be completely removed so its ability
to see as clearly as HST is about the same.
[ StenOdenwald/Astronomer
- 26 - 11:33:39 ]
RE: [Oran/NASAChatHost]
Sten, how often do the lenses on ground-based telescopes typically need to
be serviced to maintain their current viewing capability?
Usually, telescopes can go for decades before some major work needs to be done
like resurfacing/aluminizing the mirrors. The real activity is in the electronic
imaging systems and these can be redesigned every few years to improve their
sensitivity as new technology becomes available.
[ Oran/NASAChatHost - 29
- 11:39:26 ]
RE: [EMILIO] Thanks Oran, I have another question.
Pluton Planet has a orbital different another planets( has a orbital 122 ¼ with
respect to vertical), is possible that it would be a Planetesimal from keeper
belt or Orz Belt, thanks very much
You're welcome, Emilio. As a reminder, please send us your comments about today's
chats at http://quest.nasa.gov/activities/chats/feedback.html.
Also, check out our newly redesigned web site at http://quest.nasa.gov!
[ StenOdenwald/Astronomer
- 30 - 11:42:47 ]
RE: [EMILIO] Thanks Oran, I have another question.
Pluton Planet has a orbital different another planets( has a orbital 122 ¼ with
respect to vertical), is possible that it would be a Planetesimal from keeper
belt or Orz Belt, thanks very much
Pluto is classified as the largest member of the Kuiper Belt system that we
know about so far. I may have formed near where it is now, or captured into
this orbit through an encounter with Neptune billions of years ago. The two
orbits do seem to be independent of each other so Pluto has probably always
had an irregular orbit like it does. there are many asteroids that also have
inclined orbits too.
[ StenOdenwald/Astronomer
- 32 - 11:53:09 ]
RE: [Oran/NASAChatHost]
Does this also hold true for servicing the HST, or is its technology much
different than ground-based telescopes, so its upgrade requirements are also
different?
The HST was designed to have its instruments upgraded every 5 years or so with
new-generation cameras and instruments. The high speed photometer was replaced
by the infrared camera as one type of science program ended so that a new one
could be started up to explore other astronomical issues.
[ Oran/NASAChatHost - 34
- 11:55:25 ]
RE: [StenOdenwald/Astronomer]
The HST was designed to have its instruments upgraded every 5 years or so
with new-generation cameras and instruments. The high speed photometer was replaced
by the infrared camera as one type of science program ended so that a new one
could be started up to explore other astronomical issues.
Thanks, Sten!
[ StenOdenwald/Astronomer
- 35 - 11:56:19 ]
RE: [EMILIO] Thanks again Oran and Sten, my last
question please. the astronomers and astrophisicist are saying the Our Universe
are expanding el famous Big-Bang, but the 90 % is black material with neutrines,
and a experiment in Japan find mass in it, then if the neutrines has mass it
represent all Universe is possible that with mass and the material (10%) we
can see would have been a Big-Crunch, all space-time-material in reverse by
to be a big gravitational scope?, thanks veru much, bye bye.
Well, not quite. The measurements show that the Kamiokande neutrino masses,
still debatable, are not enough to account for dark matter, so there must be
something else going on. The total amount of stuff isnt enough to cause collapse,
but we will know more when the NASA MAP mission does its work next year.
[ StenOdenwald/Astronomer
- 36 - 11:56:58 ]
Thanks, everyone, for an interesting chat!!
[ Oran/NASAChatHost - 38
- 11:58:30 ]
We will now be ending today's NASA Quest Solar Sytem Online chat with Sten Odenwald.
We would like to thank Sten for his generous support in opening the new SSO's
first two chats this fall. THANK YOU very much, Sten!!
[ Oran/NASAChatHost - 39
- 11:59:41 ]
RE: [StenOdenwald/Astronomer]
Thanks, everyone, for an interesting chat!!
Thank you, too, Sten!
[ Oran/NASAChatHost - 40
- 12:00:28 ]
An archive of today's chat will be available soon. Be sure to send us your comments
about today's chat at http://quest.nasa.gov/activities/chats/feedback.html.
We look forward to hearing from you.
[ Oran/NASAChatHost - 41
- 12:00:58 ]
Thanks again for joining us, and have a great day!