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  #1381  
Old 02-11-19, 06:09 PM
lotr10 lotr10 is offline
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Quote:
Originally Posted by eastisbest View Post
Anyone else watching that Mars series? Merges real life, interactions with Space X, NASA... with the story? I just watched first ep. So much in it, I'll have to watch again to get the full affect but definitely potential.
It's on my to watch list.
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  #1382  
Old 02-11-19, 06:13 PM
lotr10 lotr10 is offline
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Remember that strange "object" called Ultima Thule at the edge of the solar system that looked like two balls stuck together?

https://phys.org/news/2019-02-horizo...ce-ultima.html

Well it looks a lot different when the probe Horizons was shooting pictures looking BACK at the object:

Stringing 14 of these images into a short departure movie, New Horizons scientists can confirm that the two sections (or "lobes") of Ultima Thule are not spherical. The larger lobe, nicknamed "Ultima," more closely resembles a giant pancake and the smaller lobe, nicknamed "Thule," is shaped like a dented walnut.

"We had an impression of Ultima Thule based on the limited number of images returned in the days around the flyby, but seeing more data has significantly changed our view," Stern said. "It would be closer to reality to say Ultima Thule's shape is flatter, like a pancake. But more importantly, the new images are creating scientific puzzles about how such an object could even be formed. We've never seen something like this orbiting the Sun."


From their drawing the thing almost looks artificial.
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  #1383  
Old 02-12-19, 09:49 AM
lotr10 lotr10 is offline
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Here's a somewhat pessimistic but detailed article on the challenges facing us if we want to colonize a nearby star system:

https://www.sciencealert.com/how-big...o-another-star

Some of it is a bit obvious like this part:

As we addressed in a previous article, the estimated travel time to the nearest star system (Alpha Centauri) could take anywhere from 19,000 to 81,000 years using conventional methods.

For this reason, many theorists have recommended that humanity rely on generation ships to spread the seed of humanity among the stars. Naturally, such a project presents many challenges, not the least of which is how large a spacecraft would need to be to sustain a multi-generational crew.

In a new study, of international scientists addressed this very question and determined that a lot of interior space would be needed!



And this part earns a well deserved duhhhhhhh:

It would also require that people be willing to risk their lives, so only adventurous people would apply.


I think this approach has a better chance of working as it involves nuclear power, though in a bit of an unconventional manner:

https://www.bis-space.com/what-we-do...oject-daedalus
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  #1384  
Old 02-12-19, 10:11 AM
Crusaders Crusaders is online now
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The problem with that is, after say 500 years, would we just send another crew who could get there even sooner? And 500 years from then, would we do the same again? By the time the first generation ship got there, humans would have been there for 10,000 or more years. Our technology advances so quickly, it's really not worth it to do it unless Earth is staring down obliteration. At least until we master FTL travel that would get us to the nearest stars in a person's lifetime.
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  #1385  
Old 02-12-19, 05:30 PM
lotr10 lotr10 is offline
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Originally Posted by Crusaders View Post
The problem with that is, after say 500 years, would we just send another crew who could get there even sooner? And 500 years from then, would we do the same again? By the time the first generation ship got there, humans would have been there for 10,000 or more years. Our technology advances so quickly, it's really not worth it to do it unless Earth is staring down obliteration. At least until we master FTL travel that would get us to the nearest stars in a person's lifetime.
Good points Crusaders!
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  #1386  
Old 02-12-19, 06:26 PM
eastisbest eastisbest is offline
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What has human kind ever mastered without baby steps? Of course you send them. If the following want to stop and say "hello" to the buggy, they can do that too. More likely it will be an outer system human settlement that actually does the sending than one from Earth.
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  #1387  
Old 02-12-19, 06:47 PM
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I'm sure we'll send people to the outer solar system then into interstellar space. But I doubt we'd send people on a mission to Alpha Centauri on a 20,000 year mission. It just doesn't make any sense.

When talking interstellar travel, whether takeoff is from Earth or Pluto is completely irrelevant.
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  #1388  
Old 02-13-19, 09:22 AM
lotr10 lotr10 is offline
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Quote:
Originally Posted by Crusaders View Post
I'm sure we'll send people to the outer solar system then into interstellar space. But I doubt we'd send people on a mission to Alpha Centauri on a 20,000 year mission. It just doesn't make any sense.

When talking interstellar travel, whether takeoff is from Earth or Pluto is completely irrelevant.
I think what east was alluding to was that people born & raised on an off planet colony will be better prepared physiologically & mentally to make an interstellar trip. Having been raised in the cramped confines of a station on Mars or the Moon would certainly better prepare one for a life aboard a star ship then someone who grew up in the wide open spaces of Earth. Ditto the benefits of a body born in and growing up in lower gravity.

I think we can all agree that if the journey actually takes 20,000 years it's never going to be made. But the assumption is that once we've established off planet colonies throughout the solar system our technology would have advanced to a point where such a trip might take as little as a century (or less). All you have to do is go back to 1919 and compare the state of technology then to what it is today to imagine how much more advanced we'll be in 100 years. Lifespans alone might be increased to several hundred years making such a voyage possible within a single lifetime.
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  #1389  
Old 02-13-19, 11:59 AM
eastisbest eastisbest is offline
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20,000 year journey: I wouldn't put it out of the rhealm. THere's going to be people that just decide to chuck it all. There's going to be mobile communities. It's even been speculated, hollowing out an asteroid and giving it a push. Not exactly an immediate return on exploration so yeah I agree, not likely that we'd (government, ours or whoevers, or private industry) send out such a mission. More likely, religious.
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  #1390  
Old 02-13-19, 12:36 PM
FootballFan1795 FootballFan1795 is offline
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Watch Live @ 2 pm ET! NASA to Discuss Fate of Mars Rover Opportunity

https://www.space.com/17933-nasa-tel...-space-tv.html

Quote:
NASA will hold a press conference on Wednesday (Feb. 13) to discuss the agency's final attempts to call the long-silent Opportunity rover on Mars. The press conference will begin at 2 p.m. EST (1900 GMT) and will be streamed live here, courtesy of NASA TV.

Opportunity has been silent on Mars since June 10, 2018 when it powered down to try and survive a global Martian dust storm. But even after the storm cleared, Opportunity has remained incommunicado.
Maybe?

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  #1391  
Old 02-13-19, 12:46 PM
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Tickets to Mars Will Eventually Cost Less Than $500,000, Elon Musk Says

https://www.space.com/elon-musk-spac...ion-price.html

Quote:
SpaceX's Mars ships won't be ferrying just the super rich to and from the Red Planet, if everything goes according to Elon Musk's plan.

The price of a seat aboard SpaceX's Starship interplanetary vehicle will eventually drop enough to be accessible to a large chunk of the industrialized world's population, the billionaire entrepreneur predicted over the weekend.

"Very dependent on volume, but I'm confident moving to Mars (return ticket is free) will one day cost less than $500k & maybe even below $100k. Low enough that most people in advanced economies could sell their home on Earth & move to Mars if they want," Musk wrote on Twitter Sunday night (Feb. 10).


Quote:
"This will sound implausible, but I think there's a path to build Starship/Super Heavy for less than Falcon 9," Musk wrote in another tweet Sunday night, referring to SpaceX's workhorse Falcon 9 rocket. He then replied, "Yes," when one of his Twitter followers asked if the switch to stainless steel was an important factor in this potential price reduction.
Considering what's already known of Musk ...



... wouldn't surprise me if he found a way!
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  #1392  
Old 02-13-19, 02:06 PM
FootballFan1795 FootballFan1795 is offline
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Originally Posted by FootballFan1795 View Post
Watch Live @ 2 pm ET! NASA to Discuss Fate of Mars Rover Opportunity

https://www.space.com/17933-nasa-tel...-space-tv.html
Well ...

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  #1393  
Old 02-13-19, 02:09 PM
Crusaders Crusaders is online now
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Pretty remarkable since it was supposed to last a month and a half
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  #1394  
Old 02-13-19, 02:26 PM
lotr10 lotr10 is offline
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Originally Posted by FootballFan1795 View Post
Well ...

An amazing achievement all the same.

And some day a park will be built around this dead machine and it will be declared a monument to one of the earliest and most important Martian discovery missions launched from Earth. Then a couple of hundred of years later radicals from the Mars First coalition will tear it down claiming it to be a monument to Earther aggression & genocide!
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  #1395  
Old 02-13-19, 02:34 PM
FootballFan1795 FootballFan1795 is offline
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Originally Posted by lotr10 View Post
Then a couple of hundred of years later radicals from the Mars First coalition will tear it down claiming it to be a monument to Earther aggression & genocide!
A coalition might already have formed:

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  #1396  
Old 02-13-19, 02:45 PM
lotr10 lotr10 is offline
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Quote:
Originally Posted by FootballFan1795 View Post
A coalition might already have formed:



Looks like a bunch of illegal Aliens sneaked into our solar system.

Memo to future generations, the Oort Cloud would be a good place to build a Wall against this type of invasion.
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  #1397  
Old 02-15-19, 08:45 AM
lotr10 lotr10 is offline
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Will geothermal energy power our colony's on Mars:

https://www.sciencedaily.com/release...0212134754.htm


A study published last year in the journal Science suggested liquid water is present beneath the south polar ice cap of Mars. Now, a new study in the AGU journal Geophysical Research Letters argues there needs to be an underground source of heat for liquid water to exist underneath the polar ice cap.

The new research does not take sides as to whether the liquid water exists. Instead, the authors suggest recent magmatic activity -- the formation of a magma chamber within the past few hundred thousand years -- must have occurred underneath the surface of Mars for there to be enough heat to produce liquid water underneath the kilometer-and-a-half thick ice cap. On the flip side, the study's authors argue that if there was not recent magmatic activity underneath the surface of Mars, then there is not likely liquid water underneath the ice cap.
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  #1398  
Old 02-18-19, 06:50 PM
lotr10 lotr10 is offline
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This is fine with me:

https://www.fool.com/investing/2019/...launch-ma.aspx


"A few years ago I was over [visiting Arianespace in France and they] weren't worried about [United Launch Alliance but asked] could I get rid of SpaceX, because they were going to drive them out of business?" -- Rep. Loretta Sanchez (D-Calif.)

In 2015, sitting in on a House Armed Services Committee hearing on the cost of spaceflight, then-Congresswoman Loretta Sanchez got a few laughs with this quip -- but four years later, nobody's laughing in Europe. France's independent state auditor, the Cour des comptes (CDC), just reported that Elon Musk's use of reusable rockets to lower the cost of space launch poses a very real risk of driving Ariane out of the space business.


Private ventures should be handling the more routine job of commercial space launches. If SpaceX pushes the European government run Ariane out of the launch business that's a good thing IMO.
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  #1399  
Old 02-19-19, 02:26 AM
FootballFan1795 FootballFan1795 is offline
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Originally Posted by lotr10 View Post
This is fine with me:

https://www.fool.com/investing/2019/...launch-ma.aspx


"A few years ago I was over [visiting Arianespace in France and they] weren't worried about [United Launch Alliance but asked] could I get rid of SpaceX, because they were going to drive them out of business?" -- Rep. Loretta Sanchez (D-Calif.)

In 2015, sitting in on a House Armed Services Committee hearing on the cost of spaceflight, then-Congresswoman Loretta Sanchez got a few laughs with this quip -- but four years later, nobody's laughing in Europe. France's independent state auditor, the Cour des comptes (CDC), just reported that Elon Musk's use of reusable rockets to lower the cost of space launch poses a very real risk of driving Ariane out of the space business.


Private ventures should be handling the more routine job of commercial space launches. If SpaceX pushes the European government run Ariane out of the launch business that's a good thing IMO.
PBS recently aired an excellent educational doc, Rise of the Rockets, which explores just this subject. Provides easy-to-understand explanations of rocket propulsion and discusses NASA’s Space Launch System (SLS) at length, before detailing the innovations at SpaceX, Blue Origin, Boeing, Rocket Lab, Vector, Virgin Galactic, and Virgin Orbit. Also includes rarely-seen footage of NASA’s Delta Clipper Experimental (DCX) vertical-lander reusable rocket (from the early ‘90s).

https://www.pbs.org/wgbh/nova/video/...f-the-rockets/
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  #1400  
Old 02-19-19, 02:54 PM
lotr10 lotr10 is offline
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I guess we just missed the apocalypse!

https://www.msn.com/en-us/weather/to...rth/ar-BBTNiLU


A large asteroid which is thought to be around the same size as the Statue of Liberty is set to whiz past our planet today, according to NASA’s Center for Near Earth Object Studies (CNEOS.)

The space rock, known as 2013 MD8, is estimated to measure somewhere between 125 and 282 feet in diameter, and is traveling at around 30,400 miles per hour (relative to Earth.)

The asteroid will make its closest approach at 12:55 ET, NASA data suggests, potentially coming within 3,604,826 miles of our planet, meaning there is no risk of a collision. This may seem like a large distance, but in space terms it is relatively small.


Wait, what does NASA mean by the data SUGGESTS? Did this damn rock miss us at 12:55 PM or not?
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  #1401  
Old 02-21-19, 06:19 PM
lotr10 lotr10 is offline
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Japan is landing on an asteroid today to take samples:

https://www.space.com/hayabusa2-aste...g-webcast.html


Here's a link to some cool images as the probe approaches and lands on the asteroid:

http://www.hayabusa2.jaxa.jp/en/gall...c/nav20190221/


We live in amazing times!
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  #1402  
Old 02-21-19, 07:48 PM
eastisbest eastisbest is offline
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We can land on an asteroid but we can't prevent hemoroids. Yep, amazing times.


Could you imagine the race if one of those ships found a big diamond?
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  #1403  
Old 02-22-19, 09:07 AM
lotr10 lotr10 is offline
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We can land on an asteroid but we can't prevent hemoroids.
I thought there were creams for that sort of thing?
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  #1404  
Old 02-22-19, 09:10 AM
lotr10 lotr10 is offline
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And so it begins............................

https://www.technologyreview.com/s/6...mpression=true

The brains of two genetically edited girls born in China last year may have been changed in ways that enhance cognition and memory, scientists say.

The twins, called Lulu and Nana, reportedly had their genes modified before birth by a Chinese scientific team using the new editing tool CRISPR. The goal was to make the girls immune to infection by HIV, the virus that causes AIDS.

Now, new research shows that the same alteration introduced into the girls’ DNA, deletion of a gene called CCR5, not only makes mice smarter but also improves human brain recovery after stroke, and could be linked to greater success in school.

“The answer is likely yes, it did affect their brains,” says Alcino J. Silva, a neurobiologist at the University of California, Los Angeles, whose lab uncovered a major new role for the CCR5 gene in memory and the brain’s ability to form new connections.

“The simplest interpretation is that those mutations will probably have an impact on cognitive function in the twins,” says Silva. He says the exact effect on the girls’ cognition is impossible to predict, and “that is why it should not be done.”



We had a discussion earlier about whether humans could ever adapt to living in low gravity environments - I suspect using these techniques, for better or worse, means a resounding YES!
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