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#901 Re: Unmanned probes » Cassini-Huygens - Cassini-Huygens Discussion » 2004-05-17 21:31:25

Wow ecrasez_l_infame I didn't know the Cassini-Huygens spacecraft was such a big hit on this site, I'll take a better look around next time.

I never thought Titan would be so popular on a mars website

We should put our terraforming efforts into Mars, get a base or colony established in the near future and get the Mars job done
way before we even dream of sending men to Titan.

tongue

:band:

#902 Re: Unmanned probes » Cassini-Huygens - Cassini-Huygens Discussion » 2004-05-17 19:19:12

it looks like after making a colony on Mars Titan could be our next colony pit stop before Alpha Centauri

http://ciclops.lpl.arizona.edu/PR/2004/ … 7final.jpg

#904 Re: Pictures of Mars » Stars and planets need a little help please! » 2004-05-16 15:17:49

Could some one give me a little advice please


A friend of mine has just purchased one of the LX-90 Meade scopes, it was a second-hand model of the telescope for and he bought it for his family. However everything is not going so smooth  and it has come with no instructions.I have knowledge and know some stuff about planets and physics but know very little about star watching and telescopes.

We have had some resonably clear sky and are working in GMT time. A few nights ago it the weather was not too bad, and we tried to see if we could see anything in the Sky but nothing sadly ( Everything seems to be working maybe we have it set up wrong? the stand seems kind of weird ).
We have tried looking for Saturn but can't find it, hercules cluster no luck in finding, Andromeda can't seem to get this one either and Orion nebulae can't find this also. May it wasn't so clever to buy second-hand astro equipments

Does anyone here on this site have some advice on the best way to set up one of these scopes, or are the sky scences which we have searched for simply not visible now? What galaxy is visible now in the sky, and does any person know how to use the Lx 90 telescope to search for the stars?
What is the best method for a newcomer to search for the stars using this type of scope using meade lX90?

Can anyone point me in the direction of an online star chart which shows what is visible in the night sky during the month of may? I think we had a very Close Approach of Mars in 2003, can we still see mars in the sky in may of 2004 or will it have to be setember before we see a good view, can some one give me a little help please?

Thank you very much

Yang Liwei Rocket

#906 Re: Human missions » Zubrin to talk to Pres. comission? » 2004-03-22 01:06:34

yes there could be problems in putting so much time and efforts into just trying to build a lunar launch pad, people like Astronaut Glenn might point out the facts and difficulty, Gerhard von Müehle has also pointed out the possible errors in such a plan , we need new designs and maybe soon the US might put a man on mars, spending so much time with the moon could be wateing projects and money but is anyone listening?

#907 Re: Interplanetary transportation » Photon---->Ion---->Acceleration » 2004-03-19 22:11:08

Ion power is quiet slow for accelerations but there are other massive benefits, that is why Europes ESA, the people of NASA and the Russias have always said this might be the future of space transportation. [http://newsimg.bbc.co.uk/media/images/3 … a_i203.jpg]http://newsimg.bbc.co.uk/media....203.jpg
These trusters are a new science, we are only in the early stages just like when Von Braun invented the V2 rocket, the Ion engine and other types of power have a long way more to go, they are innovative form of propulsion and new power like ion thruster may be the key to opening space up for good. These new desings for Engine such as nuclear and solar sails might be the future. Right now people are keen on studying the Ion power. The Engines have several advantages, such as needing less propellant, having greater payload capacity and being capable of much more precise spacecraft pointing.
They deliver about ten times as much thrust per kilogram of propellant used than a chemical rocket, making them very 'fuel-efficient'. NASA have also been working on improvement  and better design like DS1 Ion Thruster Compatibility. That  engine provided the craft about 10 times the specific impulse of chemical propulsion. Another good example of promising design is the Europe SMART-1 , the ESA smart one seems like a good craft and will be scanning the moon for minerals, Helium 3 , Deuterium and other materials that might be used or benefical in a future lunar base.

[http://sci.esa.int/science-e/www/object … ctid=34800]http://sci.esa.int/science-e/www/object … ctid=34800


[http://www.space.com/scienceastronomy/s … 00816.html]http://www.space.com/science....16.html

#908 Re: Science, Technology, and Astronomy » Question about rockets & thrust » 2004-03-18 21:35:06

yes, no matter how many times you watch it, no matter where it launches from Europe, Russia, USA or what type of rocket it is or type of probe.
I think it still is a wonderful site, watching something blast off, pushing out past the Earths air and off into space. There is something special about watching a lift off

#909 Re: Meta New Mars » Mars - LETS DO IT without NASA » 2004-03-18 11:07:27

I'll explain it in one, robin hood, we rob from the richest and give to the martians, the only way to keep mars project alive
big_smile

but honestly, there are many good plans for the future. Space Commercialization and Space tourism company are showing how to keep the explorations open while making money.

#910 Re: Science, Technology, and Astronomy » Question about rockets & thrust » 2004-03-18 09:40:10

To see a mass ratio of 27 is possible, but what about the weight of the rocket itself? So even to get 1 Kg off the ground you would need to use a very heavy weight of fuel and also the weight of the rocket. However a  rocket is a variable mass body, meaning that mass changes with respect to the material that it is burning. Saturn V was a real ground launcher rocket, it produced its most power thrust at sea levels, while the  Russian version didn't kick in to full power until about a minute into the flight.
I think it takes about 900 tonn of fuel to get an object off into space, can't be sure how much power, thrust, force, or weight is involved but I'll try and check it out.

#911 Re: Unmanned probes » Rosetta - ESA comet orbiter and lander » 2004-03-18 09:26:30

I had been reading about this one before. It uses a new drive system and has non-reflective silicon cells,  it also has harpoons with internal ice screws.They have used a plan to use new types of propellant in these mission. I wonder if such robotics or these types of probe could be used for a mars mission, maybe also to explore phobos?


[http://www.esa.int/export/images/2_36_hzrose_L.jpg]http://www.esa.int/export/images/2_36_hzrose_L.jpg

#913 Re: Human missions » Sustained human space exploration - Will it ever become a priority? » 2004-03-17 20:11:22

smile

what do you mean by sustained?



-people exploring constantly in outer space? This could happen if you take the Moon into account, having people on the moon is to explore is it not? The ESA is looking at new forms of energy and has thought about a moon mission. China will design new types of rocket, will put more people in space, plans to build a space station and land an unmanned spacecraft on the moon sooner than 2010. Russian space agency has laos said  the first flight to Mars could be made in 2018. Also Leonid Gorshkov spoke about the abilty to send probes into space,  and maybe design plans for a manned moon mission.  Using a Russian rocket, a California company plans to fly the  private missions to the moon delivering messages, business cards and cremated remains for a sum of money. This type of commercialization might help bring money it the space agency and help in bringing in money for continous explorations, I suppose in one way the people on the ISS can be looked at as great wonderful explorers. It's sure the people on a lunar base will be looked at this way.


-Sustained transports and a future as continuous missions? With the talk of America going back to space, its re-design of the shuttle, Europe looking at new probes and new forms of propulsion and transport, we could some day see transports between here and mars, but not for a long while. Man needs to set foot on mars. Bush committed NASA to return to the Moon no later than 2020 and building a moon base and with a manned mars mission in the future, exploration between planets is possible. If we ever put a manned base on Mars, won't the people there also be explorers, and transoprts going back and forth to the planet?

-Or maybe probes always looking exploring space? Like the Voyagers, lunar probes, Giotto, Viking and Zond. Soon in the future Europe and China will be updating their missions, NASA are studying new designs and Russia have also plans for launches and additions to the ISS. We will soon see new designs and maybe new ideas for exploration of the outer planets, the kupier belt, pluto. Yet maybe this would be better done on a manned starship, I think we are a long way away from seeing mankind build one of those exploring spaceships..but maybe we are not too far..?

smile

#914 Re: Unmanned probes » Europa » 2004-03-17 15:42:57

There are many plans about going to Europa moon of Jupiter but none have gotten started. There are great ideas from the German Aerospace , is this ESA going to look below, I wonder why NASA haven't tried to do something like this earlier? [http://news.bbc.co.uk/2/hi/science/nature/3548139.stm]http://news.bbc.co.uk/2/hi/science/nature/3548139.stm
Once they do get a probe below the ice.. it would be wonderful it if there  data on the composition of the water and were photos of maybe a sub-surface ocean of water, can u imagine the images?
[http://newsimg.bbc.co.uk/media/images/3 … rob203.jpg]http://newsimg.bbc.co.uk/media....203.jpg
[http://www.newscientist.com/news/news.jsp?id=ns99993421]http://www.newscientist.com/news/news.jsp?id=ns99993421
[http://news.bbc.co.uk/olmedia/895000/im … opa300.jpg]http://news.bbc.co.uk/olmedia/895000/im … opa300.jpg

#916 Re: Space Policy » Glenn Criticizes Bush Space Plan - says direct-to-Mars is the way to go » 2004-03-17 10:58:58

A lunar colony would be a great thing, we could learn mcuh about space, biology and science with a base on the moon...but a lunar colony would only be useful if it was essentially self-sustaining, maybe this program will waste $1 trillion dollars  of money?

#917 Re: New Mars Articles » Ares Express Issue 6 - A bet » 2004-03-17 10:29:23

when will it comes out again!??

I don't know

I hope the next probe tries to use a new forum of propulsion, a new engine like some of the engine the European have experimented on before, maybe NASA can also consider the use of a new type of fuel for their next  mission , the mission to Saturn and Titan is a great idea. I hope we get something below Titan clouds so we can get images of the surface of Titan!

big_smile

#920 Re: Interplanetary transportation » Martian atmosphere - Retaining a Martian atmosphere » 2004-03-16 18:53:26

Mars is to small to hold onto a gas like Helium but it has enough mass and gravity to be able to keep heavier molecules and other types of elements...
thats why its atmosphere has some Ammonia, Water Vapour, suspended dust-Particles and Carbon Dioxide

terraforming its atmosphere would be very difficult

#923 Re: Human missions » Hypothetical Lunar Mission Profiles - How might we return to the moon? » 2004-03-15 17:39:58

I've seen some news before about the Chinese and European asking for the ISS to help build and construct a bio-dome in outerspace, but the Chinese aren't doing anything now but I think Europes Italy space agency is doing something. The idea was in this project the large bio-sphere would be construct in space and planeted with green and organism and water moved up from Earth. ESA people were thinking of using their newer Ion Engines, like the one in ESA Smart Launcher to transport this bio dome to the moon, lunar transport of materials is a good future and lets hope in the future they can put a base there on the moon for good.

big_smile

#924 Re: Interplanetary transportation » Earth to LEO - discuss » 2004-03-15 17:32:53

The Europeans have created an Ion drive system to be used in their next probes, they are now trying to enhance their ion thrusters, Ion Engines are very weak compared to rocket fuel but Ion thrusts are verry good, they have many advantages, such as needing less propellant, having greater payload capacity and being capable of much more precise spacecraft pointing. They deliver about ten times as much thrust per kilogram of propellant used than a chemical rocket, making them very 'fuel-efficient', and maybe could be used for cheaper long distance transport of minerals and materials in the future, Ion engine link here
[http://www.esa.int/export/esaSC/SEM3JQX … ing_0.html]http://www.esa.int/export/esaSC/SEM3JQX … ing_0.html
There is also Project Daedalus to send an robotic, nuclear-powered spacecraft to Barnard's Star, a very dim red
dwarf that may contain two Jupiter-class planets. Accelerating to 12-13 percent of light speed using a deuterium powered probe.
NASA spent lots of time doing the planning fopr a replacement rocket shaped X-33 was being developed NASA . It was to travel at 16 times the speed of sound and replace the older Space Shuttle. The funding was cut for NASA and military took over the projcets like Lockheed Martin, Russian and Chinese have looked at NASAs old project and might design an X33 of their own. After the recent space disaster NASA might re-open this old project.
Russians, European ESA, China and USAs NASA are all lokking at better ways to fly, cheaper fuel and increased power. Even if we could travel at 10% the speed of light it would take us almost 50 years to reach Alpha Centauri, and maybe another 50 to return home?
Using particle accelerators we have discovered many anti-matter and anti-energy particles in this giant atom smashing tunnels. One german  Eugen Sanger  had proposed its use for spacecraft propulsion because antimatter has the highest energy density of any material currently found on Earth. It could be used to push mankind to the near the light speed barrier. Under current proposals, the annihilation of matter with antimatter is 10 billion times more efficient than the oxygen-hydrogen combustion in the Space Shuttle's main engines, and about 100 times more than fission or fusion reactions. If we were to use this raw pure nati matter power we could have probes that reach pluto in a few hours, but instead today it takes us months sometimes years to go and travel and send robotic stuff to mars and other planets.
We have many great ideas for the future, I hope NASA can make something great like it has done in the past.




big_smile

#925 Re: Interplanetary transportation » The sun a giant fusion reactor » 2004-03-15 15:38:53

yes, there is much to learn from the Sun, people have often thought about how to use its energy, solar sail designs, Ion propulsion, fusion reaction engines? plasma drive, neutrino theory...there are many things and ideas but we are behind on science and have much to learn from the Suns raw power.

Many people are trying to design faster space travel, they are trying to narrow down our time window, as on average even our quickest designs take over 6 months to reach mars. Bad if you need something delivered, or for a rescue mission. Space travel is a little slow for  mankind, but we are laerning lots, Its like we have gone back in time to the days where it took weeks to cross the seas onto another land.

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