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  #1411  
Old 03-03-19, 02:07 PM
Yappi Yappi is offline
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Ancient planet-wide water system discovered on Mars hints at past alien life

Quote:
An ancient system of lakes has been identified deep underneath the surface of Mars, in a discovery scientists say hints at the past presence of life.

While the red planet is mostly dry and desolate today, a growing body of evidence shows it used to be covered in large bodies of water above and below ground.

Now, using information gathered by the European Space Agency’s Mars Express mission, scientists have located an underground water complex previously only predicted by computer models.
Read more:
https://www.independent.co.uk/news/s...-a8804426.html
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  #1412  
Old 03-04-19, 08:13 AM
lotr10 lotr10 is offline
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Quote:
Originally Posted by Yappi View Post
Ancient planet-wide water system discovered on Mars hints at past alien life



Read more:
https://www.independent.co.uk/news/s...-a8804426.html

It keeps looking better & better that Mars will one day support a large population of people.

The real question is if life once existed on Mars, and I think that it did, how far along did it get?
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  #1413  
Old 03-04-19, 08:14 AM
lotr10 lotr10 is offline
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Check out this link - lots of awesome pictures from the SpaceX Dragon demo flight:

https://www.space.com/spacex-crew-dr...ht-photos.html
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  #1414  
Old 03-04-19, 09:47 AM
Zunardo Zunardo is offline
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My wife tells me one of the teachers brings his telescope to the middle school where she works, and sets it up outside in the morning before school so students who arrive early can check out out some of the early morning sights in the sky.

He told her to tell me about the new John Glenn astronomy park at Hocking Hills state park in Logan OH. I checked out the website, they have a lot of cool programs on the schedule, along with a new observatory containing a 28-inch telescope. Definitely going to check this out a few times:

https://jgap.info/our-impact
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  #1415  
Old 03-04-19, 04:57 PM
lotr10 lotr10 is offline
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Quote:
Originally Posted by Zunardo View Post
My wife tells me one of the teachers brings his telescope to the middle school where she works, and sets it up outside in the morning before school so students who arrive early can check out out some of the early morning sights in the sky.

He told her to tell me about the new John Glenn astronomy park at Hocking Hills state park in Logan OH. I checked out the website, they have a lot of cool programs on the schedule, along with a new observatory containing a 28-inch telescope. Definitely going to check this out a few times:

https://jgap.info/our-impact

Wow that's one awesome teacher!

As an aside I checked out your link and that astronomy park looks very cool. Of course it doesn't hurt that it's at Hocking Hills - one of the best natural places in Ohio. I suspect light pollution isn't a problem there.
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  #1416  
Old 03-05-19, 05:04 PM
Yappi Yappi is offline
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Quote:
Two weeks after SpaceX launched the first private lunar lander toward the moon, the Israeli spacecraft sent back a stunning selfie of itself with Earth in the background (above).

The dishwasher-sized robot is a four-legged lander called Beresheet, which is Hebrew for "in the beginning" — the first words of the Bible. The $100 million mission is headed by a nonprofit called SpaceIL, which is based out of Tel Aviv University and backed primarily by the South African billionaire Morris Kahn.

In Beresheet's new selfie, which it took 23,364 miles from Earth on Tuesday, a placard of the Israeli flag is visible and reads "small country, big dreams."
Read more:
https://www.thisisinsider.com/israel...e-earth-2019-3
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  #1417  
Old 03-06-19, 08:59 AM
lotr10 lotr10 is offline
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Originally Posted by Yappi View Post
SpaceX will one day be the biggest company in the solar system. They are shaping up to be the British East India company on steroids.
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  #1418  
Old 03-06-19, 09:01 AM
lotr10 lotr10 is offline
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This isn't good news a indicates we need to be putting more of an effort in this area:

https://www.upi.com/Science_News/201...51713653/?sl=3


According to new asteroid collision models designed by scientists at Johns Hopkins University, deflecting a large rock headed for Earth will be harder than previously thought.

Using the most up-to-date findings on rock fracturing, researchers developed computer models to more accurately simulate asteroid collisions.

"Our question was, how much energy does it take to actually destroy an asteroid and break it into pieces?" Charles El Mir, a mechanical engineer at Johns Hopkins, said in a news release.

The results, detailed this week in the journal Icarus, suggest the task is quite difficult.
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  #1419  
Old 03-09-19, 09:36 AM
lotr10 lotr10 is offline
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And the mission was a total success!

https://www.space.com/spacex-crew-dr...light-era.html


The spaceflight landscape just changed.

SpaceX's Crew Dragon capsule aced its first mission to the International Space Station (ISS), wrapping up the six-day flight this morning (March 8) with a splashdown in the Atlantic Ocean.

Aside from an instrument-laden dummy named Ripley, Crew Dragon didn't carry any passengers on the flight, which is known as Demo-1. But the success of the shakeout cruise suggests that this huge milestone isn't far off.


Yes, this is a big deal.
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  #1420  
Old 03-09-19, 09:39 AM
lotr10 lotr10 is offline
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We're laying the foundation for an explosion in off world colonies!

https://phys.org/news/2019-03-ground...-colonies.html


Before civilization can move off world it must make sure its structures work on the extraterrestrial foundations upon which they will be built.

University of Central Florida researchers are already laying the groundwork for the off-world jump by creating standards for extraterrestrial surfaces. Their work was detailed recently in a study published in the journal Icarus.

"I'm firmly convinced that by the end of the century there will be more economic activity off planet Earth than on planet Earth," says Phil Metzger, a planetary scientist at UCF and lead author of the study.

According to the wealth management company, Morgan Stanley estimates the space economy will be worth more than $1.1 trillion by 2040.

"With economics moving in that direction, it's important for us to get a head start trying to create the regulatory and engineering environments to make sure everything is done safely and justly," Metzger says.



Let's hope they keep the R&D focused more on the engineering and less on the regulatory environment.
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  #1421  
Old 03-10-19, 09:41 AM
lotr10 lotr10 is offline
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I guess one could say this is a bit like some peoples marriages:

https://exoplanets.nasa.gov/news/155...-lead-to-doom/


Three images from NASA's Spitzer Space Telescope show pairs of galaxies on the cusp of cosmic consolidations. Though the galaxies appear separate now, gravity is pulling them together, and soon they will combine to form new, merged galaxies. Some merged galaxies will experience billions of years of growth. For others, however, the merger will kick off processes that eventually halt star formation, dooming the galaxies to wither prematurely.


So when some galaxies come together they thrive, for others they whither & die.
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  #1422  
Old 03-11-19, 08:58 AM
lotr10 lotr10 is offline
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Professor Glen Reynolds who runs the Instapundit blog has a great article on the future of the Atomic Rocket Ship.

https://www.usatoday.com/story/opini...mn/3123864002/


It’s the 21st century. Shouldn’t we have nuclear rockets by now?

Actually, we had them a long time ago. In the 1960s, the United States experimented with two types of nuclear rockets. One is now in the budget again, and I think the other should be.

The first type of nuclear rocket uses a nuclear reactor to heat a reaction mass — hydrogen, or even water — and expels it from a thrust chamber as fast-moving gas. (Chemical rockets, like we use today, depend on a chemical reaction — basically, a controlled chemical explosion — to produce the hot gas.) Back during the 1960s, we experimented with nuclear rockets of this type, known as “nuclear thermal rockets,” under projects Rover and NERVA.

Generally, the problem with rocket engines is that you can either make them highly efficient but with very low thrust (like ion drives) or give them powerful thrust with low efficiency, like a chemical rocket. The only way to have both at once, high efficiency and high thrust, is to go nuclear. Nuclear thermal rockets are about twice as efficient as the best chemical rockets.
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  #1423  
Old 03-12-19, 02:22 PM
FootballFan1795 FootballFan1795 is offline
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Quote:
Originally Posted by lotr10 View Post
SpaceX will one day be the biggest company in the solar system. They are shaping up to be the British East India company on steroids.
Agreed.

BTW, IMO much of Musk’s reported ‘odd’ behavior, which everyone keeps worrying so much about (i.e. smoking weed on air, the SEC hoorah over the infamous ‘Tesla 420’ tweet, the release of all Tesla patents ‘to help save the Earth’), can be directly attributed to his kooky GF’s influence (Grimes – aka Claire Boucher). Grimes is quite the weirdo and opinionated to boot! Actually, they’re probably perfect for each other in that she might be more into space travel, AI, etc. than he is, lol.

Quote:
Originally Posted by lotr10 View Post
And the mission was a total success!

https://www.space.com/spacex-crew-dr...light-era.html
Here's Grimes's recent retweet regarding the Crew Dragon launch and her January tweets and pic from when she visited Musk in China (despite media reports that they broke up months ago):








https://www.businessinsider.com/grim...factory-2019-1


Looks like they’re still together. So, stay tuned!


For anyone who doesn’t know by now, Grimes is the blonde singing in this video:

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  #1424  
Old 03-14-19, 03:52 PM
lotr10 lotr10 is offline
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Forget about Climate Change this is the true threat to the survival of human civilization:

https://www.nbcnews.com/mach/science...ens-ncna982201


A gigantic solar storm hit Earth about 2,600 years ago, one about 10 times stronger than any solar storm recorded in the modern day, a new study finds.

These findings suggest that such explosions recur regularly in Earth's history, and could wreak havoc if they were to hit now, given how dependent the world has become on electricity.

The sun can bombard Earth with explosions of highly energetic particles known as solar proton events. These "proton storms" can endanger people and electronics both in space and in the air.

In addition, when a proton storm hits Earth's magnetosphere — the shell of electrically charged particles — it is trapped by Earth's magnetic field. When the solar storm causes a disturbance in our planet's magnetosphere, it's called a geomagnetic storm which can wreak devastation on power grids across the planet. For example, in 1989, a solar outburst blacked out the entire Canadian province of Quebec within seconds, damaging transformers as far away as New Jersey, and nearly shutting down U.S. power grids from the mid-Atlantic through the Pacific Northwest.



We know for a FACT that these solar storms regularly hit the earth and we know for a fact how they would devastate our power grid. This isn't theory but reality and we sure as hell better be ready when the next one hits.
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  #1425  
Old 03-14-19, 03:55 PM
lotr10 lotr10 is offline
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Okay time to get your mind blown:

https://blogs.scientificamerican.com...ul-of-physics/


“The most incomprehensible thing about the universe is that it is comprehensible, ”Albert Einstein famously once said. These days, however, it is far from being a matter of consensus that the universe is comprehensible, or even that it is unique. Fundamental physics is facing a crisis, related to two popular concepts that are frequently invoked, summarized tellingly by the buzzwords “multiverse” and “uglyverse.”

I guess I would prefer to live in a "multiverse" as opposed to an "uglyverse".

But then again the idea that there are an infinite number of Khardasians running around might make the multiverse a horrific idea:

Multiverse proponents advocate the idea that there may exist innumerable other universes, some of them with totally different physics and numbers of spatial dimensions; and that you, I and everything else may exist in countless copies. “The multiverse may be the most dangerous idea in physics” argues the South African cosmologist George Ellis.
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  #1426  
Old 03-15-19, 09:49 AM
FootballFan1795 FootballFan1795 is offline
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Quote:
Originally Posted by lotr10 View Post
Okay time to get your mind blown:

https://blogs.scientificamerican.com...ul-of-physics/


“The most incomprehensible thing about the universe is that it is comprehensible, ”Albert Einstein famously once said. These days, however, it is far from being a matter of consensus that the universe is comprehensible, or even that it is unique. Fundamental physics is facing a crisis, related to two popular concepts that are frequently invoked, summarized tellingly by the buzzwords “multiverse” and “uglyverse.”

I guess I would prefer to live in a "multiverse" as opposed to an "uglyverse".

But then again the idea that there are an infinite number of Khardasians running around might make the multiverse a horrific idea:

Multiverse proponents advocate the idea that there may exist innumerable other universes, some of them with totally different physics and numbers of spatial dimensions; and that you, I and everything else may exist in countless copies. “The multiverse may be the most dangerous idea in physics” argues the South African cosmologist George Ellis.
^^Remember this idea being touched upon in 2011's Another Earth, which was a pretty good movie:



Quote:
Originally Posted by lotr10 View Post
This isn't good news; it indicates we need to be putting more of an effort in this area:

https://www.upi.com/Science_News/201...51713653/?sl=3


According to new asteroid collision models designed by scientists at Johns Hopkins University, deflecting a large rock headed for Earth will be harder than previously thought.

Using the most up-to-date findings on rock fracturing, researchers developed computer models to more accurately simulate asteroid collisions.

"Our question was, how much energy does it take to actually destroy an asteroid and break it into pieces?" Charles El Mir, a mechanical engineer at Johns Hopkins, said in a news release.

The results, detailed this week in the journal Icarus, suggest the task is quite difficult.
And this^^ reminded me of another strange 2011 movie, Melancholia, in which a small rogue planet hurtles toward a collision course with Earth (uh, basically, we're screwed), and how crazy it makes the protagonist (who is psychic):

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  #1427  
Old 03-18-19, 09:12 AM
lotr10 lotr10 is offline
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Quote:
Originally Posted by FootballFan1795 View Post

And this^^ reminded me of another strange 2011 movie, Melancholia, in which a small rogue planet hurtles toward a collision course with Earth (uh, basically, we're screwed), and how crazy it makes the protagonist (who is psychic):


Melancholia was an appropriately named movie. The damn thing was depressing as hell!
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  #1428  
Old 03-18-19, 09:14 AM
lotr10 lotr10 is offline
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Faster then light travel may be easier to accomplish then thought:

https://www.businessinsider.com/blac...-galaxy-2019-3


* Scientists once thought that traveling into a black hole would kill you.

* But now, physicists have run computer simulations to show that certain types of black holes — large, rotating ones — could serve as portals for hyperspace travel.

* Some physicists believe that you'd arrive at a remote part of the Milky Way or perhaps in another galaxy altogether.

* One of the safest passageways might be the supermassive black hole at the center of our galaxy, called Sagittarius A*.
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  #1429  
Old 03-20-19, 08:23 AM
lotr10 lotr10 is offline
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This is very cool - as long as it isn't heading our way!

https://phys.org/news/2019-03-fermi-...ll-pulsar.html


Astronomers found a pulsar hurtling through space at nearly 2.5 million miles an hour—so fast it could travel the distance between Earth and the Moon in just 6 minutes. The discovery was made using NASA's Fermi Gamma-ray Space Telescope and the National Science Foundation's Karl G. Jansky Very Large Array (VLA).

Pulsars are superdense, rapidly spinning neutron stars left behind when a massive star explodes. This one, dubbed PSR J0002+6216 (J0002 for short), sports a radio-emitting tail pointing directly toward the expanding debris of a recent supernova explosion.


Check out the excellent video at the link. This does beg the question as to how many of these things are out there hurtling through space! Hopefully not to many.
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