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  #1081  
Old 07-15-18, 06:33 PM
Zunardo Zunardo is offline
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When Google Maps satellite view came out, I finally learned what Cape Canaveral looked like. I didn't know they had all those different launch sites from the past still visible.
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  #1082  
Old 07-15-18, 09:38 PM
eastisbest eastisbest is offline
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Quote:
Originally Posted by Zunardo View Post
When Google Maps satellite view came out, I finally learned what Cape Canaveral looked like. I didn't know they had all those different launch sites from the past still visible.

Did my first jumps from a air strip just a few miles west. I can still see the image of the assembly building in my head. We'd head to the roofs at work to see launches. I'd headed back to college but my ex and several friends saw Challenger go. It stuck with them.
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  #1083  
Old 07-16-18, 07:22 AM
lotr10 lotr10 is offline
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Quote:
Originally Posted by ohiopup View Post
Meanwhile back on Earth...

https://www.telegraph.co.uk/news/201...veral-florida/


Two NASA launch towers demolished in Cape Canaveral, Florida

==== = =====

The twin towers at Launch Complex 17 were demolished after 61 years
https://www.msn.com/en-us/video/watc...hed/vp-AAzZ7en

= = = = = = = = = = = = =



:>---

EGA
Sort of symbolic of the new age of space exploration kicking off. Launches will now be happening from multiple sites across the world as private companies increasingly jockey to become dominant in this new business.
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  #1084  
Old 07-19-18, 04:36 PM
lotr10 lotr10 is offline
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Stars have BIG appetites:

https://www.sciencedaily.com/release...0718113332.htm

For nearly a century, astronomers have puzzled over the curious variability of young stars residing in the Taurus-Auriga constellation some 450 light years from Earth. One star in particular has drawn astronomers' attention. Every few decades, the star's light has faded briefly before brightening again.

In recent years, astronomers have observed the star dimming more frequently, and for longer periods, raising the question: What is repeatedly obscuring the star? The answer, astronomers believe, could shed light on some of the chaotic processes that take place early in a star's development.

Now physicists from MIT and elsewhere have observed the star, named RW Aur A, using NASA's Chandra X-Ray Observatory. They've found evidence for what may have caused its most recent dimming event: a collision of two infant planetary bodies, which produced in its aftermath a dense cloud of gas and dust. As this planetary debris fell into the star, it generated a thick veil, temporarily obscuring the star's light.



The Galaxy is a gloriously strange place.
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  #1085  
Old 07-20-18, 03:39 PM
lotr10 lotr10 is offline
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Talk about double trouble:

https://www.upi.com/Science_News/201...&utm_medium=19

The near-Earth asteroid 2017 YE5 is actually two asteroids. Observations by two powerful telescopes helped astronomers confirm the asteroid's binary nature.

The asteroid was first spotted by the Morocco Oukaimeden Sky Survey in December of 2017. Followup observations during the summer of 2018 by NASA's Goldstone Solar System Radar suggested the space rock might actually be two objects.


Now this is cool unless if gets bumped out of its orbit and smacks into the earth.
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  #1086  
Old 07-22-18, 06:56 AM
lotr10 lotr10 is offline
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Juno takes some more amazing pictures of the solar systems mega lava lamp otherwise known as Jupiter:

https://www.space.com/41236-high-alt...iter-juno.html

Can't wait for that Jupiter insertion event!
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  #1087  
Old 07-22-18, 07:01 AM
lotr10 lotr10 is offline
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Here's an article that's in the tall weeds talking about a potential MAJOR breakthrough in spaceship propulsion:

https://www.nextbigfuture.com/2018/0...g-isotope.html

Propulsion through antimatter annihilation - what's not to like! And these guys, who are being funded by NASA, have an aggressive timeline ahead of them:

Timelines and the Future

Positron Dynamics proposed milestones which have had some slippage:

— Laboratory demonstration of “scalable” thrust using positrons. Six to eight months.

— Positron-powered launch of small “cubesat” satellite into low-Earth orbit, demonstrating orbital change from positron propulsion. Eighteen months to two years.

This propulsion system could be used in satellite constellations, for example — as part of a global network of broad-band internet, enabling virtually anyone on the planet access to the internet.

— Launch of another rocket to further demonstrate the feasibility of positrons to power a spacecraft. Two-and-a-half years (probably followed by a succession of other unmanned spacecraft over a period of years).

— Launch of a positron-propelled spacecraft to Mars. In the 2030s.
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  #1088  
Old 07-22-18, 12:40 PM
FootballFan1795 FootballFan1795 is offline
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Quote:
Originally Posted by lotr10 View Post
Here's an article that's in the tall weeds talking about a potential MAJOR breakthrough in spaceship propulsion:

https://www.nextbigfuture.com/2018/0...g-isotope.html

Propulsion through antimatter annihilation - what's not to like! And these guys, who are being funded by NASA, have an aggressive timeline ahead of them:

Timelines and the Future

Positron Dynamics proposed milestones which have had some slippage:

— Laboratory demonstration of “scalable” thrust using positrons. Six to eight months.

— Positron-powered launch of small “cubesat” satellite into low-Earth orbit, demonstrating orbital change from positron propulsion. Eighteen months to two years.

This propulsion system could be used in satellite constellations, for example — as part of a global network of broad-band internet, enabling virtually anyone on the planet access to the internet.

— Launch of another rocket to further demonstrate the feasibility of positrons to power a spacecraft. Two-and-a-half years (probably followed by a succession of other unmanned spacecraft over a period of years).

— Launch of a positron-propelled spacecraft to Mars. In the 2030s.


Wonder what Dirac would make of all this?

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  #1089  
Old 07-22-18, 06:05 PM
lotr10 lotr10 is offline
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Originally Posted by FootballFan1795 View Post


Wonder what Dirac would make of all this?


Great video FootballFan1795, sure beats that article which is a bit thick!

As for Dirac his comments would be along the line of "what took you so long" or "I told you so".
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  #1090  
Old 07-24-18, 04:35 PM
lotr10 lotr10 is offline
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You've all heard of the Richter scale to measure earthquake impacts but have you heard of the Rio scale to measure alien encounters?

https://phys.org/news/2018-07-scient...ncounters.html

What are the consequences for the human race if we encountered extraterrestrial intelligence? If you see a story about aliens on TV or online, how excited should you be? A new study, published in the International Journal of Astrobiology, revamps a long-used tool for classifying potential signals from extraterrestrial intelligence, making it fit for the modern world of news and social media.

First developed in 2001, the Rio Scale is a tool used by astronomers searching for extraterrestrial intelligence (ETI) to help communicate to the public 'how excited' they should be about what has been observed. The Scale measures the consequences for humans if the signal is from aliens, as well as the probability that the signal really is from aliens, and not a natural phenomenon or human-made. The scale gives a score between zero and ten, so that the public can quickly see how important a signal really is.


Color me skeptical....

First developed in 2001, the Rio Scale is a tool used by astronomers searching for extraterrestrial intelligence (ETI) to help communicate to the public 'how excited' they should be about what has been observed. The Scale measures the consequences for humans if the signal is from aliens, as well as the probability that the signal really is from aliens, and not a natural phenomenon or human-made. The scale gives a score between zero and ten, so that the public can quickly see how important a signal really is.

"The whole world knows about the Richter Scale for quantifying the severity of an earthquake; that number is reported immediately following a quake and subsequently refined as more data are consolidated," said Jill Tarter, co-founder of the SETI Institute. "The SETI community is attempting to create a scale that can accompany reports of any claims of the detection of extraterrestrial intelligence and be refined over time as more data become available. This scale should convey both the significance and credibility of the claimed detection. Rio 2.0 is an attempt to update the scale to make it more useful and compatible with current modes of information dissemination, as well as providing means for the public to become familiar with the scale."


Go to the site to see the actual scale but the problem I see here is what data do they have, beyond pure speculation, to construct this scale?
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  #1091  
Old 07-24-18, 04:50 PM
BlackHawk BlackHawk is offline
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^^^Spotting two aliens at a local Hooters restaurant would definitely be a "10" on the Rio Scale. After all, eyewitness testimony is always the most credible and reliable type of evidence.

(Sorry, but I had to. My apologies to JR, wherever he may be.)
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  #1092  
Old 07-25-18, 06:58 PM
lotr10 lotr10 is offline
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Quote:
Originally Posted by BlackHawk View Post
^^^Spotting two aliens at a local Hooters restaurant would definitely be a "10" on the Rio Scale. After all, eyewitness testimony is always the most credible and reliable type of evidence.

(Sorry, but I had to. My apologies to JR, wherever he may be.)
Your comment reminds me of this famous scene from the Mars themed Total Recall - WARNING R RATED:


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  #1093  
Old 07-25-18, 07:02 PM
lotr10 lotr10 is offline
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Sure most people suspected as much but it's nice to see that we've found a large body of liquid water on Mars:

https://www.wired.com/story/large-bo...water-on-mars/

The Italian Space Agency announced Wednesday that researchers have detected signs of a large, stable body of liquid water locked away beneath a mile of ice near Mars' south pole. The observations were recorded by the Mars Advanced Radar for Subsurface and Ionosphere Sounding instrument—Marsis for short. "Marsis was born to make this kind of discovery, and now it has," says Roberto Orosei, a radioastronomer at the National Institute for Astrophysics, who led the investigation. His team's findings, which appear in this week's issue of Science, raise tantalizing questions about the planet's geology—and its potential for harboring life.

Of course the speculation is that to be in liquid form at low temperature it must be very hard water so we better bring the right detergent for washing cloths!
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  #1094  
Old 07-26-18, 03:53 PM
lotr10 lotr10 is offline
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The dawn of a new space age is at hand!

https://www.bloombergquint.com/busin...age#gs.zFKLnw0

A trail marker was laid down in February, when SpaceX equipped a Falcon Heavy rocket with a Tesla Roadster and a data crystal containing Isaac Asimov’s Foundation trilogy and fired it toward Mars, then landed two of the Falcon’s boosters in synchrony at Cape Canaveral. At least 2.3 million people watched the YouTube livestream—high by internet standards, if far short of the hundreds of millions who tuned in for the first moon landing. Where the Apollo era was marked by singular, cost-is-no-object technological feats and suffused with political and cultural meaning, the new one has been more diffuse and democratic, fueled by ever-cheaper launches that have opened space to startups, researchers, and smaller countries. A full-fledged space economy is within reach, and with it, perhaps, a permanent human presence above.
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  #1095  
Old 07-26-18, 03:55 PM
lotr10 lotr10 is offline
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There may have been life on the moon back in the day and I'm not talking about when the Apollo astronauts were hitting golf balls there:

https://www.popularmechanics.com/spa...-existed-moon/

The moon is a dry and barren place, utterly devoid of life. But has it always been this way? New research suggests that perhaps at one point in its history, the moon may have harbored microorganisms similar to those on Earth.

Looking at the moon today, it’s easy to reach the conclusion that it is devoid of life. The moon has no atmosphere, no magnetic field, and what little water it does have is frozen in craters at the poles. It’s hard to think of a place more inhospitable to life, but about 3.5 billion years ago, the moon was a very different place.

In that era, the moon was still relatively new, only about a billion years old. Earth's only natural satellite still had a molten core, and gases escaping from underground magma would have produced an atmosphere. That atmosphere wouldn’t have been as thick as the Earth’s, but it would have been enough to allow liquid water to form on the surface. The molten core could have also generated a magnetic field to protect the lunar surface from solar radiation.



When all is said and done we'll find that life is ubiquitous in the Galaxy.
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  #1096  
Old 07-27-18, 06:23 AM
lotr10 lotr10 is offline
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Virgin Galactic makes big progress in it's space based tourism plans:

https://www.nbcnews.com/mach/science...ght-ncna894981

Virgin Galactic completed the third rocket-powered test flight of its VSS Unity spaceplane over California’s Mojave Desert on Thursday, bringing billionaire Richard Branson’s space tourism company a step closer to taking its first customers into space.
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  #1097  
Old 07-29-18, 06:38 AM
lotr10 lotr10 is offline
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Happy 60th Birthday NASA!

https://en.wikipedia.org/wiki/NASA
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  #1098  
Old 07-29-18, 06:40 AM
lotr10 lotr10 is offline
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You never can read to much about Black Holes!

https://phys.org/news/2018-07-galaxy...g-massive.html

Findings from a Rochester Institute of Technology study provide further evidence that the outskirts of spiral galaxies host massive black holes. These overlooked regions are new places to observe gravitational waves created when the massive bodies collide, the authors report.

The study winds back time on massive black holes by analyzing their visible precursors—supernovae with collapsing cores. The slow decay of these massive stars creates bright signatures in the electromagnetic spectrum before stellar evolution ends in black holes.
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  #1099  
Old 07-29-18, 10:04 AM
FootballFan1795 FootballFan1795 is offline
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Quote:
Originally Posted by lotr10 View Post
Virgin Galactic makes big progress in it's space based tourism plans:

https://www.nbcnews.com/mach/science...ght-ncna894981

Virgin Galactic completed the third rocket-powered test flight of its VSS Unity spaceplane over California’s Mojave Desert on Thursday, bringing billionaire Richard Branson’s space tourism company a step closer to taking its first customers into space.
“Oh, that is a million-dollar view out the window, Dave.” – Mike ‘Sooch’ Masucci

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  #1100  
Old 07-29-18, 10:31 AM
FootballFan1795 FootballFan1795 is offline
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Originally Posted by lotr10 View Post
You never can read to much about Black Holes!

https://phys.org/news/2018-07-galaxy...g-massive.html

Findings from a Rochester Institute of Technology study provide further evidence that the outskirts of spiral galaxies host massive black holes. These overlooked regions are new places to observe gravitational waves created when the massive bodies collide, the authors report.

The study winds back time on massive black holes by analyzing their visible precursors—supernovae with collapsing cores. The slow decay of these massive stars creates bright signatures in the electromagnetic spectrum before stellar evolution ends in black holes.
And, more on black holes:

https://www.sciencedaily.com/release...0726161015.htm

Quote:
Some physicists have believed in a "firewall" around the perimeter of a black hole that would incinerate anything sucked into its powerful gravitational pull.

But a team from The Ohio State University has calculated an explanation of what would happen if an electron fell into a typical black hole, with a mass as big as the sun.

The new study builds on previous work from 2004 led by Mathur (Samir Mathur, a professor of physics at Ohio State) that theorized that black holes are basically like giant, messy balls of yarn -- "fuzzballs" that gather more and more heft as new objects are sucked in.

After months of mathematical machinations, Mathur and his team arrived at their by-the-numbers explanation to support their theory discounting the firewall. It's built on string theory, the scientific notion that the universe is composed of subatomic string-like tubes of energy.
Finally, an answer to the burning string theory question, lol:

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  #1101  
Old 07-29-18, 02:51 PM
BlackHawk BlackHawk is offline
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^^^^ Thanks FootballFan1795. That's from my favorite webcomic: xkcd.

Lotr, you should check if you already haven't. A great comic for science geeks.
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  #1102  
Old 07-29-18, 02:59 PM
Zunardo Zunardo is offline
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If you missed the big cosmic even this past Friday, don't worry - you can see it again in just 35,000 years:

http://www.scienceinfo.news/july-27-...g-as-the-moon/
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  #1103  
Old 07-30-18, 07:55 AM
lotr10 lotr10 is offline
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Quote:
Originally Posted by BlackHawk View Post
^^^^ Thanks FootballFan1795. That's from my favorite webcomic: xkcd.

Lotr, you should check if you already haven't. A great comic for science geeks.
Thanks BlackHawk & Footballfan1795! I had never seen this cartoon site before and it's outstanding.

It's surprisingly hard hitting and I really liked the knock on "peer review" which anyone who has been involved in the process can tell you leaves a LOT to be desired. That's why it used to make me grit my teeth when the Climate Change alarmists evoked peer review as if it was some kind of religious experience conveying perfect science when in fact it's like any other human effort: a whole lot of political maneuvering with some actual science thrown in.
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  #1104  
Old 07-30-18, 08:00 AM
lotr10 lotr10 is offline
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As the search for life in our solar system heats up the moons of the gas giants remain the best spots where we might find existing life:

https://www.space.com/41239-jupiter-...s-survive.html

If signs of life exist on Jupiter's icy moon Europa, they might not be as hard to find as scientists had thought, a new study reports.

The 1,900-mile-wide (3,100 kilometers) Europa harbors a huge ocean beneath its icy shell. What's more, astronomers think this water is in contact with the moon's rocky core, making a variety of complex and intriguing chemical reactions possible.

Researchers therefore regard Europa as one of the solar system's best bets to harbor alien life. Europa is also a geologically active world, so samples of the buried ocean may routinely make it to the surface — via localized upwelling of the ocean itself, for example, and/or through geyser-like outgassing, evidence of which has been spotted multiple times by NASA's Hubble Space Telescope.



And not to be left out Saturn's big moon Titan wants in on the search:

https://www.space.com/41228-where-se...ife-titan.html

New findings, published in the journal Astrobiology, suggest that large craters are the prime locations in which to find the building blocks of life on Saturn's largest moon, Titan.

Titan is an icy expanse covered by organic molecules, with liquid methane lakes enshrouded by a thick, hazy atmosphere of nitrogen and methane that begs the question: why isn't there life on this strangely Earth-like world? Perhaps it is the balmy -179 degrees Celsius (-300 degrees Fahrenheit) temperature on the surface that would likely prevent any biochemical reactions from taking place. But is there any place on Titan where there might be hope that biomolecules, such as amino acids, could form? One team wanted to find out.
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  #1105  
Old 07-30-18, 02:48 PM
Yappi Yappi is offline
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Can We Terraform Mars to Make It Earth-Like? Not Anytime Soon, Study Suggests

Quote:
Could we make Mars Earth-like? Not with existing technologies, one new paper suggests.

For many years, Mars has existed as a hopeful "Planet B" — a secondary option if Earth can no longer support us as a species. From science-fiction stories to scientific investigations, humans have considered the possibilities of living on Mars for a long time. A main staple of many Mars-colonization concepts is terraforming — a hypothetical process of changing the conditions on a planet to make it habitable for life that exists on Earth, including humans, without a need for life-support systems.
Read more:
https://www.space.com/41318-we-cant-terraform-mars.html
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  #1106  
Old 07-30-18, 03:14 PM
FootballFan1795 FootballFan1795 is offline
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You tryin' to start trouble here, Yappi?
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  #1107  
Old 07-30-18, 03:48 PM
lotr10 lotr10 is offline
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Originally Posted by Yappi View Post
Can We Terraform Mars to Make It Earth-Like? Not Anytime Soon, Study Suggests



Read more:
https://www.space.com/41318-we-cant-terraform-mars.html
Great article Yappi but the fundamental theme - terraforming Mars - seems wrong headed to me. The amount of work just doesn't seem worth the effort. I suspect that we will have to adapt to living on places like Mars. People will be born, grow up and die in vast habitats.

For recreation and a little outdoor living they'll suit up and go play in a Martian environment not as hostile as imagined. Humans will evolve to adapt to the lower G and we may focus on living underground to avoid prolonged enhanced radiation exposure. The presence of water, in large amounts, was the ONLY prerequisite for creating huge settlements on Mars and we know there's a lot of water on Mars. Some day millions will be living there without the need to terraform the planet.

If it's habitable worlds we want to settle we'll have to leave the solar system. And while that's not within our technological capabilities today it will be within the century. Either way, building vast moon & planet based habitats for people to live in will be doable, terraforming a whole planet just won't be worth the effort.

As an aside , for a show that explores all these concepts from terraforming Mars to creating a whole new space based human civilization check out the TV show The Expanse. You can binge watch the 1st 3 seasons now.
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  #1108  
Old 07-31-18, 08:15 AM
lotr10 lotr10 is offline
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Now here's a space based infrastructure project folks should support:

https://www.nextbigfuture.com/2018/0...g-changes.html

America needs to get serious about its spacefaring future. There needs to be an aggressive political, economic, and military strategy to help transition to space-based sustainable energy to replace fossil fuels.

A fully reusable SpaceX BFR will enable space-based solar power to be a clean energy source that is lower cost than coal.

In order to take advantage of this then hundreds of very large space solar power systems will need to be built and they will collectively generate more power than the dozens of Hoover Dams.


IMO this is a renewable energy effort worth the effort. The good news is we have enough oil & natural gas to tide us over until we can realize an engineering project of this size. I suspect that at some point in the not to distant future the majority of the earth's energy will be delivered from space.
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  #1109  
Old 08-01-18, 08:50 PM
lotr10 lotr10 is offline
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Let the sunshine in:

https://www.space.com/41350-exoplane...lien-life.html


With every new exoplanet discovered, the same question arises: Could this world host life?

The default way scientists first approach that question is to check if the planet lies in the so-called habitable zone, the range of distances from a star in which a planet can hold liquid water on its surface. But water alone doesn't make life, so in a new paper, a team of scientists looked at another aspect of habitability: whether a planet receives enough ultraviolet radiation to create life's building blocks.

"The thing that you know best about any exoplanet system is the star," Paul Rimmer, lead author on the new study and an astrochemist at the University of Cambridge in the United Kingdom, told Space.com. "So, that seemed like a natural thing to start with."
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  #1110  
Old 08-02-18, 02:35 AM
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Just for fun, for MTV's anniversary:



Lyrics:

Major Tom (Coming Home)

Standing there alone,
The ship is waiting.
All systems are go.
"Are you sure?"
Control is not convinced,
But the computer
Has the evidence.
No need to abort.
The countdown starts.

Watching in a trance,
The crew is certain.
Nothing left to chance,
All is working.
Trying to relax
Up in the capsule
"Send me up a drink."
Jokes Major Tom.
The count goes on...

4, 3, 2, 1
Earth below us
Drifting, falling.
Floating weightless
Calling, calling home...

Second stage is cut.
We're now in orbit.
Stabilizers up,
Runnning perfect.
Starting to collect
Requested data.
"What will it affect
When all is done?"
Thinks Major Tom.

Back at ground control,
There is a problem.
"Go to rockets full."
Not responding.
"Hello Major Tom.
Are you receiving?
Turn the thrusters on.
We're standing by."
There's no reply.

4, 3, 2, 1
Earth below us
Drifting, falling.
Floating weightless
Calling, calling home...

Across the stratosphere,
A final message:
"Give my wife my love."
Then nothing more.

Far beneath the ship,
The world is mourning.
They don't realize
He's alive.
No one understands,
But Major Tom sees.
"Now the light commands
This is my home,
I'm coming home."

Earth below us
Drifting, falling.
Floating weightless
Coming home...
Earth below us
Drifting, falling.
Floating weightless
Coming, coming
Home...
Home.....
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