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  #931  
Old 02-11-18, 10:44 AM
lotr10 lotr10 is offline
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Everyone loves Bubbles! Especially those produced in zero g!

https://phys.org/news/2018-02-fluids-space.html

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  #932  
Old 02-12-18, 09:21 PM
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Life on Mars may be just under the surface!

https://www.sciencedaily.com/release...0206100338.htm

However, all hope for life on Mars is not lost. In another paper led by Michalski and published recently, the scientists point out that the prospects for surface life on Mars might be dim, but the possibilities for subsurface life are promising. Life on Earth likely began in hydrothermal systems (environments where hot water reacts with rocks), and there is abundant evidence for many locations where hydrothermal environments exists on Mars at the time when life might have originated in similar environments on Earth. They argue that, in order to understand how life formed on Earth, we should ignore the surface environments on Mars and focus exploration on hydrothermal deposits.
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  #933  
Old 02-12-18, 09:24 PM
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Did you know that NASA wants to build a space submarine!?!

https://www.sciencedaily.com/release...0207151820.htm

Building a submarine gets tricky when the temperature drops to -300 Fahrenheit and the ocean is made of methane and ethane. Researchers are working to determine how a submarine might work on Titan, the largest of Saturn's many moons and the second largest in the solar system. The space agency plans to launch a real submarine into Titan seas in the next 20 years.

Wow, this sounds like a tough engineering nut to crack. But man will the video be cool!
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  #934  
Old 02-14-18, 09:44 AM
lotr10 lotr10 is offline
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This is a fun article:

https://www.popularmechanics.com/sci...save-humanity/

I definitely agree with this as the #1 mega project to complete:

We live in a scary universe where errant space rocks can—and have—wrought destruction on a planetary scale. We get hit all the time, and it’s just a matter of time until a big enough world-killer sails into view of our space telescopes. The plan, as anyone who’s seen Armageddon knows, is to nuke the hell out of it. The point is not to blow it into still-dangerous fragments, but to knock the rock off its destructive course.

As satisfying as that plan sounds, there’s a lot we don’t know about nuking space rocks. Not all asteroids are composed of the same thing, muddling models of the effects of a detonation. some say better deflection is caused with a surface detonation, others advise to detonate at a distance to zap more surface area and cause more movement.


And this one is by far the most interesting:

In 1992 Russia launched a solar mirror called Znamya 2 with a unique mission—to beam reflected light back to the planet, raking western Russia with extra light equivalent to a full moon. The patch of light was 5km wide and traveled across Europe at 8km a second. A second attempt failed in space when the sail snagged on an antenna as the flexible mirror unfurled.

So it’s certainly possible to use solar reflectors to change the amount of solar energy that pours into the Earth, but would you want to? Doesn’t the proposed Geoengineering Research Act in 2016 want to seed clouds with sulfur to make them more reflective, so do we really need more sunlight when global warming is the problem?


Now I get how "controlling" the sun could have some nice benefits here on earth but I can't help but think about a kid on a sunny day with a magnifying glass roasting ants!
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  #935  
Old 02-14-18, 09:46 AM
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You just knew there had to be more in the payload then Musk's Tesla car in that recent SpaceX Falcon Heavy rocket launch:

https://www.sciencealert.com/spacex-...ars-tesla-arch
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  #936  
Old 02-15-18, 04:53 PM
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Now this is what I call thinking BIG:

https://www.nextbigfuture.com/2018/0...-in-space.html

Nextbigfuture described how 200 large space stations could be built by 2040 to hold 2 million people. There are videos that provide more details on the SpaceX BFR and the Kalpana space station.


And this is what I call thinking practically:

https://www.popularmechanics.com/mil...ay-satellites/

Your phone is not going to work on the day nuclear war starts. But the U.S. President, National Security Council, and combat commanders count on being able to communicate. This doomsday connection relies on what we call Advanced Extremely High Frequency (AEHF) satellites that sit in geostationary orbit.

“We need systems that work on the worst day in the history of the world,” says Todd Harrison, director of the Aerospace Security Project at the Center for Strategic and International Studies.
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  #937  
Old 02-17-18, 09:34 AM
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Remember this strange object from an article posted a couple of weeks ago here:

https://www.livescience.com/61742-ou...lent-past.html

To call this "asteroid" weird is an understatement. First off it's our first confirmed interstellar visitor and second it looks like a space ship!

An interstellar object called 'Oumuamua has confounded astronomers ever since it passed through our solar system in October of last year.

Scientists initially thought that the object — the first-ever visitor from another solar system spotted by Earth-based telescopes — was a comet. Later, they considered it an asteroid and even later described it as a possibly comet-like icy body with a rocky crust.

Now, scientists have found that in addition to its confusing appearance, 'Oumuamua — an up to 1,300-foot-long (400 meters), cucumber-shaped object — likely has a rather dramatic history.


I don't care what they say, until proven otherwise it looks like an alien ship to me. And it's been roughed up a bit:

Oumuamua's erratic motion might be a result of a collision with another asteroid, said Wes Fraser, one of the researchers behind the latest paper on 'Oumuamua, published Feb. 9 in the journal Nature Astronomy. This collision, in fact, may have been what thrust 'Oumuamua out of its native solar system and on a trajectory toward the sun.

Or maybe it got into a fight with another alien star ship?

Oh and for the record who names these things? Oumuamua? Just call the damn thing "Joe" and be done with it.
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  #938  
Old 02-19-18, 05:01 PM
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It's always fun to read about space mega structures!

https://www.popularmechanics.com/spa...uilt-in-space/

A rocket blasts off from the launchpad, carrying a couple dozen tons of cargo into space. In the span of a few minutes, the rocket accelerates to around 17,500 miles per hour, orbiting the Earth at nearly 300 miles above the surface.

What is this rocket carrying? Perhaps a communications satellite, a NASA spacecraft, or some payload for the military? Actually, the rocket isn’t even carrying a spacecraft at all. Instead, its payload contains several tons of high-grade plastic and pre-fabricated components, material that will be fed to a 3D printer waiting in orbit. This futuristic printer will then use the plastic and components to construct a functional satellite spanning several miles.

A mile-wide satellite might sound impossible, but that’s exactly where the space industry is headed. In the future, giant telescopes, communication satellites, solar arrays, and space stations will fill the space around the Earth, and many of them will be several times larger than anything ever built on the surface.


Using 3D printers to create huge space structures seems plausible to me. Taking advantage of low gravity to use 3D printers to engineer space based marvels is going to happen sooner rather than later.
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  #939  
Old 02-19-18, 05:11 PM
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the knock on 3D materials is durability (for now). Probably won't be used on anything force critical but those non-critical things subject to predicatable forces? Cool. One step closer to society in space. Might be good for short term critical replacements until actuals can arrive.

What is the turn-around on a Space-X? Real emergency, how fast can the space programs respond?

FYI: I finished the Jack Cambell. Impressed that the last book was maybe the most enjoyable of the lot. If the author didn't have this end-game in mind from the start he did an excellent job of jurying rigging it in.

Just began another series, this by Stephan Baxter: First contact, exploration type novel. "Proxima" Very promising.
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  #940  
Old 02-20-18, 08:26 AM
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Quote:
Originally Posted by eastisbest View Post
FYI: I finished the Jack Cambell. Impressed that the last book was maybe the most enjoyable of the lot. If the author didn't have this end-game in mind from the start he did an excellent job of jurying rigging it in.

Just began another series, this by Stephan Baxter: First contact, exploration type novel. "Proxima" Very promising.
I've fallen way behind on my fiction reading and have a backlog of books including a couple from Campbell and Baxter I need to read. BTW, Baxter is very good. Right now I'm reading Peter Hamilton's The Great North Road, which is outstanding.
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  #941  
Old 02-21-18, 09:02 AM
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Here's some good news on the space exploration front! Of course it involves SpaceX and the Falcon Heavy rocket!

https://gizmodo.com/falcon-heavy-may...ber-1823116009

Asteroid mining is about more than just heading up into space and bringing back a rock full of platinum—you actually need to land something on just the right asteroid.

Falcon Heavy, the world’s most powerful rocket launched by Elon Musk-led SpaceX two weeks ago, may have changed the game, says one astronomer.

“Instead of a few hundred we may have thousands of ore bearing asteroids available,” Martin Elvis from the Harvard-Smithsonian Center for Astrophysics told an audience at the American Association for the Advancement of Science annual meeting in Austin, Texas.

Asteroids could be ripe with natural resources, including water and heavy metals like platinum, as we’ve reported. Space colonialists like Planetary Resources hope to get mining equipment onto one of those nearby ‘roids to bring the resources back down to Earth and turn into space John D. Rockefellers. But there are tons of challenges—including landing on the asteroids themselves.


Humanity will finally find El Dorado and it will be in the asteroid belt.
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  #942  
Old 02-21-18, 08:04 PM
eastisbest eastisbest is offline
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I'd send one big rocket up with a bunch of parasitic ones.. Then when close to the belt, release them all to find a home and start sampling asteroids and sending back data.
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  #943  
Old 02-23-18, 11:12 AM
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Quote:
Originally Posted by eastisbest View Post
I'd send one big rocket up with a bunch of parasitic ones.. Then when close to the belt, release them all to find a home and start sampling asteroids and sending back data.
My guess is that something like this is exactly what they will do. A "mother-ship" will bring the bots to the belt and then they'll be launched in a spread pattern to land on a whole bunch of asteroids, dig in a bit and start sending back information. If the asteroid belt is as rich in strategic minerals as scientists think then we'll have a "gold" rush on our hands!
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  #944  
Old 02-23-18, 11:18 AM
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Mars or bust! The idea of nuclear rockets is making a come back!

https://www.popularmechanics.com/spa...-engines-mars/

To accomplish what will be the greatest human spaceflight triumph since Apollo 11—sending astronauts to Mars—NASA is looking to a blast from its nuclear past.

Today's chemical propellant rocket engines may not be the fastest or most efficient way to send a crew to another planet. One idea for the next-generation rocket engine you'd need is to bring back nuclear thermal propulsion (NTP) systems. The technology was studied in the 1950s and 60s, but shelved in the early 70s because of technological challenges, and because there was no clear need for the propulsion system.

Jeff Sheehy, chief engineer of NASA's Space Technology Mission Directorate, says times have changed. Advances in manufacturing, materials science, and engineering have made it possible to design a better fuel element and nuclear reactor than was possible during the Cold War. What's more, and what has really been lacking until now, is a reinvigorated "desire to send crews into deep space," says Sheehy. "I mean the desire has always been there, but the push or the emphasis that NASA has had for the last few years about developing that capability—that has renewed the interest in NTP as an option."


This is a great article if you want to learn how nuclear rockets work and why they may be the key to successfully colonizing the solar system. This is also a nice example of how NASA defines a need and sets the parameters and then sub contracts a specialist company to deliver the goods. This time it's a company that produces nuclear fuel for the US navy.
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  #945  
Old 02-24-18, 04:17 PM
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Trailer for the new "Lost in Space" is out. Not promising. Voice over actor has no gravitas, even Robot sounds less tech advanced even that the one from the 60s. Someone stupid in charge here. The original idea was quite serious but it looks like they're going for demographic. Cute kids, cute robot.... instead of serious science. as originally intended.
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  #946  
Old 02-25-18, 09:30 AM
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Quote:
Originally Posted by eastisbest View Post
Trailer for the new "Lost in Space" is out. Not promising. Voice over actor has no gravitas, even Robot sounds less tech advanced even that the one from the 60s. Someone stupid in charge here. The original idea was quite serious but it looks like they're going for demographic. Cute kids, cute robot.... instead of serious science. as originally intended.
Yea I saw the trailer and it looked pretty bad. That's why I admire shows like The Expanse, which at least try to present something fresh in science fiction.
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  #947  
Old 02-27-18, 09:14 AM
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I like this kind of research because I believe that we'll find a common link between life throughout the galaxy so why not study how life has adapted to extremes on earth as a way to guess at how it might have adapted on places like Mars:

https://www.yahoo.com/news/dormant-d...204607424.html

It may rain once a decade or less in South America's Atacama Desert, but tiny bacteria and microorganisms survive there, hinting at the possibility of similar life on Mars, researchers said Monday.

The desert, which spans parts of Chile and Peru, is the driest non-polar desert on Earth and may contain the environment most like that of the Red Planet, said the report in the Proceedings of the National Academy of Sciences.
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  #948  
Old 02-28-18, 01:34 PM
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It looks like a near neighbor is shooting off fireworks!

https://www.sciencealert.com/proxima...anetary-system

Our closest stellar neighbour, Proxima Centauri, knows how to belch 'em out. According to new research, in March of last year it erupted into an absolute beast of a stellar flare, 10 times brighter than the largest flares produced by our own Sun, even though it has only about one-eighth of the mass.

Unfortunately this doesn't bode well for the chances of life in this solar system:

We know Proxima Centauri has a great deal of flare activity, so this wouldn't be entirely out of character for the star. But it also lowers the chances for finding life on Proxima b, a rocky planet about 1.3 times the mass of Earth.

And if life did evolve under these conditions then it's pretty damn tough.
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  #949  
Old 03-01-18, 08:53 AM
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This is the kind of stuff that blows my mind:

https://www.yahoo.com/news/astronome...183632246.html

After the Big Bang, it was cold and black. And then there was light. Now, for the first time, astronomers have glimpsed that dawn of the universe 13.6 billion years ago when the earliest stars were turning on the light in the cosmic darkness.

And if that's not enough, they may have detected mysterious dark matter at work, too.


So it looks like not only have they glimpsed the birth of the first stars but they may have found solid evidence of the existence of Dark matter.
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  #950  
Old 03-02-18, 09:07 AM
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Now this guy get's a prize for being honest:

http://waterfordwhispersnews.com/201...tum-physicist/

THEORETICAL Quantum Physicist Dr. Amit Goswami admitted today that he, and his peers, have absolutely ‘no f****** idea’ what they’re doing, and claims they were no nearer than prehistoric man to figuring out the Universe.

“We have been just winging it to tell you the truth,” explained the 78-year-old in an exclusive interview with WWN. “Seriously, I haven’t a clue what’s going on. Either does anyone else in my field. We keep proving stuff that never actually happened”.

“Our cover is blown, what can I say? He added.



A breath of fresh air and a reminder that to true scientists, the science is NEVER settled.
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  #951  
Old 03-04-18, 08:40 AM
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Oh joy, this will only encourage local TV stations to devote half their broadcast to the weather. And wait until the meteorologists at your local news can show 3D images of the advancing snowmegadon storms or super cell thunderstorms!

https://arstechnica.com/science/2018...united-states/

America has a new weather satellite—the second of a new generation of high-definition weather observation spacecraft. The GOES-S spacecraft lifted off from Florida on Thursday evening, launched aboard an Atlas V rocket. It will reach its target geostationary orbit in two weeks, about 36,000km above the Earth's surface.


And imagine how TV weathermen will use these tools to show us those end of the world 2 inch snowfalls that routinely devastate Cincinnati in all their 3D, high resolution glory!

The GOES-R series of satellites scan the planet five times faster than previous US geostationary weather satellites, and they do so with four times the resolution. For weather events of high interest, such as hurricanes and the frequently changing conditions within the eye of the storm, this new generation of satellite can provide new images and data every 30 seconds. The spacecraft also carry the first operational lightning mappers flown in geostationary orbit.
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  #952  
Old 03-06-18, 09:43 AM
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Who said sewage wasn't useful:

https://nypost.com/2018/03/05/scient...-saturns-moon/

Alien life may be thriving in a warm underground ocean on Saturn’s icy moon Enceladus, research suggests.

Scientists in Austria found an ultra-rare microbe in a sewage plant that they think is equipped to thrive on the desolate moon.

The moon — described as a “hot spot” in the search for alien life — could be harboring methane-breathing bacteria, according to researchers from Austria’s Universität Wien.

The team found several species of microbe that could theoretically thrive in the underground sea.


It's research like this that has me confident we'll find life in our solar system outside of Earth.
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  #953  
Old 03-08-18, 08:46 AM
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The Juno probe continues its amazing work at explaining Jupiter to us:

http://www.bbc.com/news/science-environment-43317566

The American space agency's Juno probe has been studying the variations in the pull of gravity as it flies across the giant world's banded atmosphere.

These measurements betray the movement of mass within Jupiter, and that gives scientists clues to its structure.

The latest data reveals the activity of those familiar, colourful, wind-sculpted bands extends 3,000km down.



One thing's for sure, some day Jupiter will be the solar systems #1 extreme weather tourist stop:

At the north pole, eight cyclones rotate around a single storm, whereas at the south pole, five cyclones encircle the central storm. The origins of these cyclones and how they persist without merging, or letting another storm muscle in, remain unknown, however.

Alberto Adriani, the lead author on the paper from the Institute for Space Astrophysics and Planetology, Italy, said: "Each one of the northern cyclones is almost as wide as the distance between Naples, Italy, and New York City - and the southern ones are even larger than that. They have very violent winds, reaching, in some cases, speeds as great as 220mph (350km/h).

"Finally, and perhaps most remarkably, they are very close together and enduring. There is nothing else like it that we know of in the Solar System."
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  #954  
Old 03-09-18, 05:26 PM
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If you want peace, prepare for war is good advice in space as it is on earth - IMO of course.

http://freebeacon.com/national-secur...space-warfare/

The Joint Staff intelligence directorate warned earlier this year that China and Russia will have fully developed space attack weapons in place by 2020 that will threaten all U.S. satellites in low earth orbit—100 miles to 1,200 miles in space.

Satellites form the backbone of the U.S. military's ability to conduct combined arms warfare over long distances. They provide communications, navigation, intelligence and surveillance, weapons targeting, and attack warning.

Analysts say anti-satellites attacks knocking out 12 Global Positioning System satellites, located in medium-earth orbit around 12,550 miles high, would be severely degraded military operations.

U.S. space weapons are likely to match anti-satellite weaponry developed by both China and Russia. That would include several types of weapons and capabilities, ranging from advanced missile defense interceptors modified for space attacks on satellites, cyber warfare capabilities to disrupt or destroy anti-satellite and space weapons systems both in space and on the ground, and lasers and electronic jammers.
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  #955  
Old 03-12-18, 07:46 AM
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Step by step the dream of an off planet colony gets closer:

https://www.cnbc.com/2018/03/11/elon...f-of-2019.html

Tesla and SpaceX founder Elon Musk told an audience at South by Southwest that his timeline for sending a space vehicle to Mars could mark its first milestone early next year.

The privately-funded venture, announced in September 2017, aims to send a cargo mission to the Red Planet by 2022. SpaceX's ultimate objective is to plant the seeds to put a human colony on Mars.
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  #956  
Old 03-13-18, 04:20 PM
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This article is LOADED with details on the International Space Station:

https://www.popularmechanics.com/spa...space-station/

It uses an owners guide approach and answers some basic questions of how certain things work.
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  #957  
Old 03-14-18, 04:45 PM
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Some good news in the hunt for Earth like planets:

https://www.cnet.com/news/super-eart...abitable-nasa/

Astronomers have zeroed in on a new up-and-coming candidate in the search for a planet beyond our solar system that might be able to sustain life.

Three so-called "super-Earths" have been spotted around the red dwarf star K2-155, around 200 light-years away. The outermost planet, K2-155d, is 1.6 times the size of Earth near the star's habitable zone and could be a watery planet, which is always a good sign when it comes to possibly harboring life.

Researchers ran what is known about the exoplanet through some climate modeling programs and found it has the potential to be habitable, especially if other factors like the absence of major solar flares from K2-155 turn out to also be positive. Fortunately for any hypothetical critters on K2-155d, no flares were seen from the star over a period of 80 days. We recently learned that the same can't be said for the nearest exoplanet, poor flare-blasted Proxima b.



I bet a red dwarf star has some pretty cool sunrises and sunsets!
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  #958  
Old 03-16-18, 09:32 AM
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Now I can get behind this kind of super infrastructure project 100%:

https://www.telegraph.co.uk/science/...sday-asteroid/

Nasa has drawn up plans for a huge nuclear spacecraft capable of shunting or blowing up an asteroid if it was on course to wipe out life on Earth.

The US space agency published details of its Hammer (Hypervelocity Asteroid Mitigation Mission for Emergency Response) deterrent, an eight tonne spaceship which could deflect a giant space rock.



And HAMMER is a great name for this mother of all bombs!
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  #959  
Old 03-18-18, 07:54 PM
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Ceres is a very interesting place:

http://www.sci-news.com/space/ceres-change-05823.html

One of the two new studies revealed the abundance of ice on the northern wall of Juling Crater, a 12-mile (20 km) crater in the southern hemisphere of Ceres.

The new observations, made by Dawn’s Visual and Infrared Imaging Spectrometer (VIR) instrument from April to October 2016, show an increase in the amount of ice on the crater wall.

“This is the first direct detection of change on the surface of Ceres,” said Dr. Andrea Raponi, a researcher at the Institute of Astrophysics and Planetary Science, Italy.

“The combination of Ceres moving closer to the Sun in its orbit, along with seasonal change, triggers the release of water vapor from the subsurface, which then condenses on the cold crater wall. This causes an increase in the amount of exposed ice.”

“The warming might also cause landslides on the crater walls that expose fresh ice patches.”


Mixing active "weather" (of a sort) and active geology make Ceres a place worth studying. And the presence of copious amounts of water means Ceres will one day host a colony that will be best positioned to exploit the enormous mineral resources of the asteroid belt!
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  #960  
Old 03-19-18, 08:51 AM
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Now this is very cool!

http://sciencevibe.com/2018/03/18/na...on-miles-away/

NASA has just received a response from the void, and believers everywhere are losing their collective minds.

After 37 years of inactivity, the NASA spacecraft Voyager 1 fired up its thrusters for the first time in nearly four decades all the way over in interstellar space.

This incredible – and unsuspected – triumph means Voyager 1 can once again communicate with Earth, from 13 billion miles away.


Now while this is amazing and surprising at the same time I do remember a Start Trek movie where aliens took over Voyager and turned it into an evil space probe - just saying.
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