outer space exploration

[uls]

May warp drive ako sa garahe...

[mbeige]

With our current propulsion technology, it will take generations to reach the nearest stars. That's why it was proposed to have "generation ships" where entire generations of people will be born, live and die as they cross the distances between the stars.

To get around this, research on FTL (faster than light) systems are still going on until today. This includes teleportation and non-conventional propulsion systems which might offer faster speeds.

Thanks for making that clearer, I forgot how to compute for a light year (Star Trek)

[CVT]

Hmmm so you think ung mga tumulong gumawa ng pyramid sa ancient egyptians galing ng mars? San na kaya sila? Too good to be true kasi eh. If aliens exists bakit di sila magpakita diba, shy type cguro.

OT:
Bro.,- just got the idea from watching Star Trek series/movies.

One of the probable reasons why advanced civilizations would not want to interfere with a civilization like ours is that they want us to undergo the normal evolution process. No interference/shock with their advanced technology.

3606

[CVT]

With our current propulsion technology, it will take generations to reach the nearest stars. That's why it was proposed to have "generation ships" where entire generations of people will be born, live and die as they cross the distances between the stars.

To get around this, research on FTL (faster than light) systems are still going on until today. This includes teleportation and non-conventional propulsion systems which might offer faster speeds.

And distances will now be measured in parsecs.....
Areas in sectors/quadrants...

Whew!

3606

[niky]

The problem is light speed.

Anything that you can do in a lab has, at one point or another, happened in nature.

Unfortunately, we've never observed faster-than-light travel. Faster-than-light radio may be possible by using paired particles (quantumly-paired... but there are problems with doing even this), but you'd still have to send that radio by rocket.

Given current technology, and the resources available to us, the best we might be able to do is to send a seed-ship to another star on a slow-burn. It'd contain the stuff necessary to create life, to be released upon the target world when the rocket gets there.

The rocket would take thousands of years to get there. To make a journey of even "just" two lightyears in less than a century requires an enormous amount of thrust, which means a lot of fuel... fuel that the rocket would have to use again to slow down at the target.

On a slow burn, you can keep fuel needs to a minimum. But you'd have to make sure the mechanisms and electronics used would survive a few centuries, at least.

Once at the target world, the rocket seeds it with artificial-life in several places, hoping that the genetically designed a-life will take hold.

If we're really smart, we'd include pre-made instructions in the DNA of the a-life... give it huuuuuge DNA strands that we can encode the human genome into a hundred times over, or even most of the species available on Earth. Once the A-life has developed into a suitable eco-system, the human DNA will trigger, and one of the artificial life species will develop into humanity.

It'd take over a million years (the proto-life would have to terraform the world first, then develop to a point where the artificial ecosystem could support human life), but it's possible.

[6shooter]

OT:
Bro.,- just got the idea from watching Star Trek series/movies.

One of the probable reasons why advanced civilizations would not want to interfere with a civilization like ours is that they want us to undergo the normal evolution process. No interference/shock with their advanced technology.

3606

Unless kayo po ay ang Estados Unidos at tingin niyo kailangan mag interfere. LOL

Paano naman po kung "wormholes" ang gamitin para sa paglakbay sa kalawakan? para hindi po kailangan lumakbay ng napaka layo?

At kung ginawa ng sangkatauhan ang pag gawa ng buhay sa ibang planeta siya na ba ang magiging Diyos? Tanung lang po.

[VtEC]

Man has landed on the moon, done space explorations, discovered new planets, done space travel.....who would think man can't find a way to replace oil?

yan nga ang point e.they are investing billions of $ sa mga space explorations para saan?what now kung makadiskubre sila ng sangkatutak na planeta??magbebenefit ba tayo?yup, most industrialized countries are using nuclear energy but what about us?we are still dependent on arab oil producing countries.instead of exploring the space,this giants(US/Russia) must really exert effort to look for a mean to replace the crude oil, say by water.pero sa tingin ko, alang effort na ginagawa kasi business is business.

[niky]

There are billions of dollars being sunk into alternative energy, already. It's not like we can magically create energy from water.

Sure, water can be split into oxygen and hydrogen, which can be recombined in combustion to produce energy, but the power required to split them is always more than you can get from the reaction.

It's a fact of life... sea water is not the magical answer to our energy problems.

Nuclear Fusion is a good bet, but after billions of dollars worth of research, we still aren't close to a self-sustaining or power-producing reaction.

Space exploration is not a waste. Pure science like space exploration and quantum physics may use a lot of money, but there are often technology spin-offs and applications that result from them. Advances in medicine, metallurgy, etcetera, all result from the space program.

And we need to think in the long term. This planet will only remain habitable for humans for another couple of hundred thousand years... maybe a million or two, at most. For the survival of the human race, we need to find a way to get humanity out of the solar system and out to the stars.

[oliver1013]

Matalino ang tao pero hindi pa ganun katalino at ganun katibay ang katawan para magsurvive sa space ng matagalan. Sa laki ng space, or solar system lang natin our planet is so small parang alikabok lang. And we are just another life form on it, parang mga mikrobyo lang tayo. Kita niyo naman konting increase lang ng temperature tigok na tayo, konting lamig lang ganun din. How can you expect our frail bodies to survive space.

[ghosthunter]

To get a spaceship to go faster, it would need a better power source and chemical rockets. A "nuclear fusion" engine could be possible solution. Fusion is what makes our sun burn. Harnessing the power to drive a reaction engine will result in a ship that can accelerate faster than standard chemical rockets without the need to have massive amounts of fuel on board.

The result? We can have interstellar travel not measured in generations but simply years for the closer stars. I computed a ship using fusion propulsion accelerating & decelerating the ship at 9.81 meters/sec2 (or one gravity) during the entire trip to Alpha Centauri (4.71 light years away) will only take less than 5 years to arrive at destination.

Of course this will still mean the spaceship must be self-sufficient in everything so it would arrive intact with all crew ready when they arrive at their destination. BTW, I assumed the ship will only do 9.81m/s2 acceleration to simulate gravity during the entire trip to minimize the "need" to have artificial gravity.

Since such a stellar travel spaceship will probably be very large, in-system interplanetary travel will have to be done by smaller versions of it. To make the smaller interplanetary ships more controllable than using pure nuclear fusion action-reaction propulsion, the fusion reaction can be harnessed be heating up water to generate extreme high pressure steam and generate thrust. Water can be harvested from asteroids and comets since it has been proven be space scientists that water is relatively plentiful.