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DrQuine
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Re: If NASA has such a big budget
DrQuine   8/17/2014 11:02:23 AM
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@wnderer raises an important point - that eventually our earth will cease to exist and that humanity needs an exit plan if it is to survive. While the timeframe is much greater than the total time than humans have lived on earth to date, it is a topic that eventually will need to be addressed.

Within this century, I'd think that the advances in robotics and technology make remote exploration of other solar systems the only practical approach. Not only can they send back data at the speed of light but also the spacecraft is spared the need to carry life support and food and provide sufficient space for human beings. Exploration of the moon is viable because the trips are relatively short; expecting someone to remain healthy for a 20 year trip is not. 

wilber_xbox
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addition to the list of boring places
wilber_xbox   7/31/2014 4:42:11 AM
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This is really something as Moon and Mars are the newest edition to the boring destinations to go to. This is when NASA is planning a manned Mars mission and China is on the same lines planning Moon and Mars voyage.

selinz
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Re: Long trips
selinz   7/28/2014 8:28:45 PM
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Ah, simple. All you need is an energy egg (taken from the Formcs technology (Ender's game))!

y_sasaki
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Re: Long trips
y_sasaki   7/28/2014 12:22:20 PM
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One more problem (aside from mass increas and enormous energy required) is, when you travel in near lightspeed, every free-floating space particles become high-energy beam against the space ship. It could be protected by thick foward-facing shiled, but of course it increases space ship mass and will require even more energy to accelarate to near lightspeed.

Then, when getting to your destination, we must slow down. We need same amount of energy to decelarate to "normal" speed. So the space ship must acceralate to near lightspeed from full-tank, use only (about) half of fuel/propelant on board.

Einstein's space is not friendry to space travelers.

Wnderer
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Re: If NASA has such a big budget
Wnderer   7/26/2014 12:37:01 PM
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@Anand.Yaligar As far as we know, the planet we live on will cease to support this life in 1500 years or so


Where did you get that number? The Earth will move out of the habitable zone in 1.75 billion years.

http://news.discovery.com/earth/how-long-can-earth-support-life-130919.htm

My goal for the space program would be to double the number of people living in space every 50 years. 12 people by 2050, 24 by 2100, 1 trillion by the year 4000. Then start sending the generation ships to the stars. Humanities (perhaps non-human) descendents cover the entire galaxy in 65 million years. That's only 4% of the years of habitability left for the Earth. The same amount of time since the dinosaurs went extinct. It also calls into question the existence of extra-terrestrial life. If intelligent life has been in the galaxy for 100 million years, they should not be hard to find.

Anand.Yaligar
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Re : NASA Exec Says, 'Boldly Go!'
Anand.Yaligar   7/26/2014 10:27:52 AM
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@Wnderer: I see your point. I don?t understand why NASA exec thinks Moon is a boring place to be. NASA should build an observatory there, maintaining the Hubble is costlier than maintaining an observatory on the Moon.

Anand.Yaligar
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If NASA has such a big budget
Anand.Yaligar   7/26/2014 10:27:15 AM
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If NASA has such a big budget to fund concepts like solar sail and faster than light travel, then why not? As far as we know, the planet we live on will cease to support this life in 1500 years or so, if the current rate of deterioration continues. For this we must be developing time travelling portals and near light speed for continuation of our life on other planets. NASA is really embarking on a tight budgeted mission.

prabhakar_deosthali
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Re: Habitat on Moon
prabhakar_deosthali   7/26/2014 8:49:27 AM
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@David  I am also in the same boat as you are. I was just a young boy of 17 and had envisioned that in my life time there would be a regualy moon shuttle for people wanting to enjoy Space Travel.

Many a entrepreneurs had even started taking bookings for this space travel but I do not know why the things did not progress further.

Now with Landrover succeefully landing on Mars, there are some other people who have started to dream about visiting that Red Planet in their life time.

May be with the new technologies to increase the space shuttle spped  to something comparable to the speed of light, these journeys may take a few hours ( for moon) or a few days ( For Mars).

 

I wish NASA to aim at these achieviable targets in the near future.

 

And it can also aim to  reach for Stars as its long-long term goal.

David Ashton
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Re: Habitat on Moon
David Ashton   7/26/2014 4:56:22 AM
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@Prabakhar, thanks for reminding me how old I am!!    I remember, at 13, looking up at the moon in 1969 and wondering if I would ever be able to go there, and thinking it was probably quite likely.  Alas, the human race seems more focussed on pulling each other apart than pulling together to accomplish something like that.  

prabhakar_deosthali
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Habitat on Moon
prabhakar_deosthali   7/26/2014 1:45:01 AM
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We first landed on moon 44 yeras ago.

In these 44 years , we have not done much to take adavantage of this expedition.

If desired we can now have colonies on moon.

If not anything else we can make Moon as a hot tourist destination.

Moon is something within our reach, it only takes a few  days to reach moon.

Then why not explot moon fully before thinking of reaching the Stars - some few thousand light years from us ?

 

Dreams can be big but they also should be attainable !

 

 

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