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SPACE - random thread about space stuff

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Re: SPACE - random thread about space stuff

Post by AWS260 » Tue Mar 27, 2018 2:04 pm

The James Webb Space Telescope is delayed again.
NASA wrote:After an independent assessment of remaining tasks for the highly complex space observatory, Webb’s previously revised 2019 launch window now is targeted for approximately May 2020.

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Re: SPACE - random thread about space stuff

Post by Holman » Tue Mar 27, 2018 8:20 pm

I've been enjoying the Tough SF Blog, which is basically an ongoing series of articles on realistic space scenarios: engines that could work, the feasibility of various classic SF tropes, etc.

They also have a good Twitter presence.
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Re: SPACE - random thread about space stuff

Post by LordMortis » Wed Mar 28, 2018 1:21 pm

https://techstartups.com/2018/03/22/nas ... nactivity/

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/wonders if that scene would be more or less boring after 40 years. 40 years? Crazy.

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Re: SPACE - random thread about space stuff

Post by Daehawk » Wed Mar 28, 2018 10:13 pm

Its neat that at lightspeed it takes signals 19 hours to reach Voyager 1 then another 19 hours to get one back.
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Re: SPACE - random thread about space stuff

Post by Kraken » Wed Mar 28, 2018 10:29 pm

After 40+ years it's still not one light day away. Puts the light years between stars in perspective.

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Re: SPACE - random thread about space stuff

Post by Daehawk » Sat Mar 31, 2018 11:34 am

Star Power: Why the World’s Largest Telescope Relies on GPUs
Ltaief and Gratadour are using two of our DGX-1 AI supercomputers — one with Tesla P100 GPUs and the other with Tesla V100 GPUs — to run many simulations in parallel and make changes in real time.

“Using the DGX-1, it takes only a few seconds to simulate the observation of several galaxies,” said Ltaief. “A few years ago it would take days to do that.”
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Re: SPACE - random thread about space stuff

Post by DD* » Sun Apr 01, 2018 12:49 pm

NASA chief explains why the agency won't buy heavy lift rockets and instead will continue throwing money down a rathole.

(The comments section of the article is definitely worth a read...)
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Re: SPACE - random thread about space stuff

Post by Daehawk » Tue Apr 03, 2018 6:40 pm

Hubble sees furthest star ever....9 billion light years distant. Could already be extinct by now.

https://www.cnn.com/2018/04/03/us/hubbl ... index.html
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Re: SPACE - random thread about space stuff

Post by Daehawk » Thu Apr 12, 2018 5:57 pm

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Re: SPACE - random thread about space stuff

Post by Daehawk » Tue Apr 17, 2018 1:09 pm

Diamonds from dead planet come to Earth.

Enlarge Image

http://www.mining.com/meteorites-headin ... -diamonds/

https://www.independent.co.uk/news/scie ... 08861.html

https://www.washingtonpost.com/news/spe ... d263c2d168

https://news.nationalgeographic.com/201 ... ience-spd/
Ten years ago, an Arizona astronomer spotted an asteroid that was headed straight for Earth. Swiftly he summoned the help of colleagues and casual stargazers, who tracked the space rock as it exploded in the sky, raining shrapnel down on the Nubian desert in Sudan. Students from the University of Khartoum volunteered to search for fragments, ultimately recovering more than 600 pieces of the meteorite now known as Almahata Sitta. It was the first time scientists had ever traced an asteroid in the sky to a rock they could hold in their hands.

But that is not even the coolest thing about Almahata Sitta. Not nearly.

A new study published in the journal Nature Communications reports that the meteorite contains tiny diamonds — yes, diamonds. Those diamonds contain even tinier impurities called “inclusions.” And within those inclusions are signatures of a long-lost planet as large as Mars — a 4.5 billion-year-old relic that was destroyed during the earliest days of the solar system.
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Re: SPACE - random thread about space stuff

Post by Moliere » Tue Apr 17, 2018 8:43 pm

A Huge Asteroid Missed Earth on Sunday and No One Saw it Coming
At 2 AM on Sunday morning (AEST time) astronomers at the Steward Observatory Catalina Station in Arizona spotted an asteroid hurtling towards Earth at 106,497 km/h. Called 2018 GE3, it was estimated to be up to 110 metres in diameter, which is the same length as an average FIFA soccer field. Scientists quickly calculated that it would pass us the following day, but only just. And actually 2018 GE3 would turn out to be the largest known asteroid to ever drift so close to Earth, and this particular rock's first visit since 1930.

The next day it tore past without incident, brushing within 192,317 km of our upper atmosphere. And sure, that sounds like a healthy margin for error, but keep in mind that space is infinite and the moon is just 400,000 kilometers away.[/url]
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Re: SPACE - random thread about space stuff

Post by Moliere » Sun Apr 22, 2018 2:16 pm

Image

Image

Image

Happy 28th Birthday to the Hubble telescope!
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Re: SPACE - random thread about space stuff

Post by Holman » Mon Apr 30, 2018 10:43 am

Image from Rosetta's visit to Comet 67P is breathtaking.

Image

The background "snow" is stars appearing to move due to the rotation of the probe and the comet. Streaks in the foreground are dust illuminated by sunlight.
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Re: SPACE - random thread about space stuff

Post by Daehawk » Mon Apr 30, 2018 2:00 pm

Thats amazing. A true first for man as far as we know. Wonderful to be alive and see that.
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Re: SPACE - random thread about space stuff

Post by Moliere » Wed May 16, 2018 10:58 pm

Image
Spoiler:
Earth as seen from Mars.
Image
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Re: SPACE - random thread about space stuff

Post by Daehawk » Thu May 17, 2018 12:50 am

Damn cool pic.

Heres something. Asteroid 2010 WC9 passed between Earth and moon on May 15th. So the thing zoomed by half the distance to the moon. Thats damn close. And its like 400 feet big....Statue of Liberty size....a football field. And its a speedy bastard too at 28,655 mph!



https://www.space.com/40594-lost-astero ... flyby.html

And even though it was spotted in 2010 they lost sight of it...until it buzzed us....freaky.
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Re: SPACE - random thread about space stuff

Post by Carpet_pissr » Fri May 18, 2018 10:25 am

I think this is one of the best video explainers I have seen about the after effects of the Big Bang. The article itself is about a recently discovered star born immediately after the creation of the universe. Amazing, fascinating, stuff!

http://www.syfy.com/syfywire/a-glimpse- ... rse-itself

The star formation video below that is awesome as well.

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Re: SPACE - random thread about space stuff

Post by Sepiche » Thu May 24, 2018 5:28 pm

Remember NASA's impossible EMDrive? Surprising no one, it probably doesn't actually work:
https://news.nationalgeographic.com/201 ... e-science/
When they turned on the system but dampened the power going to the actual drive so essentially no microwaves were bouncing around, the EmDrive still managed to produce thrust—something it should not have done if it works the way the NASA team claims.

The researchers have tentatively concluded that the effect they measured is the result of Earth’s magnetic field interacting with power cables in the chamber, a result that other experts agree with.

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Re: SPACE - random thread about space stuff

Post by Daehawk » Thu May 24, 2018 5:34 pm

So build it and take it to orbit.
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Re: SPACE - random thread about space stuff

Post by Sepiche » Thu May 24, 2018 5:40 pm

Daehawk wrote:
Thu May 24, 2018 5:34 pm
So build it and take it to orbit.
If you read the article, it goes on to say they are planning on developing shielding that will allow them to test this theory on earth.

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Re: SPACE - random thread about space stuff

Post by Daehawk » Fri Jun 29, 2018 4:33 am

Ok guys dont forget about the total lunar eclipse / blood moon July 27th. the moon is at it's furthest away point so the eclipse will be long. As in the full thing taking 4 hours. But thats not all. It will be a ruddy brown to a red color for a full 1 hour 43 minutes or so.

https://www.space.com/41007-blood-moon- ... guide.html

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Re: SPACE - random thread about space stuff

Post by The Meal » Fri Jun 29, 2018 11:00 am

Best viewed from Africa, not at all visible from North America:

Enlarge Image
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Re: SPACE - random thread about space stuff

Post by stessier » Fri Jun 29, 2018 11:10 am

That's why he provided the month warning!!
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Re: SPACE - random thread about space stuff

Post by The Meal » Fri Jun 29, 2018 11:11 am

Don't get me wrong, it looks to be a fantastic lunar eclipse!
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Re: SPACE - random thread about space stuff

Post by DD* » Fri Jun 29, 2018 12:32 pm

View of the Sun replaced by other stars:

Clickity-click over to Imgur
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Re: SPACE - random thread about space stuff

Post by Kraken » Fri Jun 29, 2018 4:36 pm

Looks like another hot day on Aldebaran 3.

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Re: SPACE - random thread about space stuff

Post by Daehawk » Wed Jul 11, 2018 11:12 am

Found a new video on magnetars. They are a type of neutron star that has become SUPER magnetic. The core of Earth is about 25 Gauss. The surface is like 0.5 Gauss. A magnetar is over a quadrillion Gauss. Thats enough magnetism to tear you apart at the atomic level at over 620 miles away from it.

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Re: SPACE - random thread about space stuff

Post by msduncan » Wed Jul 11, 2018 5:58 pm

Daehawk wrote:
Wed Jul 11, 2018 11:12 am
Found a new video on magnetars. They are a type of neutron star that has become SUPER magnetic. The core of Earth is about 25 Gauss. The surface is like 0.5 Gauss. A magnetar is over a quadrillion Gauss. Thats enough magnetism to tear you apart at the atomic level at over 620 miles away from it.

I'm very attracted to this type of star.
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Re: SPACE - random thread about space stuff

Post by Kraken » Thu Jul 12, 2018 2:37 am

Brian May's stereo view of asteroid Ryugu. I found my red/blue glasses...do you still have yours?

Enlarge Image
Spoiler:
It's a d8.

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Re: SPACE - random thread about space stuff

Post by Daehawk » Thu Jul 12, 2018 10:32 am

Nope...cleaned my junk drawer out a few weeks back and dont know where I moved them.
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Re: SPACE - random thread about space stuff

Post by Isgrimnur » Tue Jul 17, 2018 5:27 pm

New moons
SOMETIMES A SEARCH for one thing presents the chance to look for something else. If you're like me, that something else is usually something small: Rummaging in the couch cushions for the TV remote might prompt you to dig for spare change. Two birds, one stone, etc. But if you're astronomer Scott Sheppard, the second bird occasionally turns out to be a doozy.

Or several doozies. Like, say, a dozen previously unknown moons orbiting Jupiter, the discovery of which was announced Tuesday by the International Astronomical Union.

"We just wanted to be as efficient as possible," says Sheppard, an astronomer at the Carnegie Institution for Science in Washington, DC. Since 2012, he and his team have been using the Dark Energy Camera—an exquisitely sensitive instrument the size of a small car, mounted to Chile's Blanco 4-m telescope—to search for celestial bodies at the fringes of the solar system. But early last year, the researchers realized that the DECam would soon survey a patch of sky that overlapped perfectly with Jupiter. They decided to adjust their instruments to look not only for distant objects well past Neptune and erstwhile-planet Pluto, but relatively close ones in the vicinity of the gas giant. You know, while they were in the neighborhood.
...
Within days they'd spotted close to two dozen candidates. Then came more than a year of waiting. They needed time for follow-up observations, to see which of the space rocks moved like moons (i.e. in predictable orbits) and which did not. "The most exciting moment came in May of this year, when 12 of the objects showed up where we expected them to," Sheppard says. Tuesday's announcement makes it official: Sheppard and his colleagues have discovered 12 new objects orbiting Jupiter, bringing the grand total of known Jovian satellites to 79.
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Re: SPACE - random thread about space stuff

Post by msduncan » Tue Jul 24, 2018 9:16 pm

Ground based telescope has been upgraded to provide Hubble Space Telescope quality photos:

link

Neptune:

Image
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Re: SPACE - random thread about space stuff

Post by Max Peck » Wed Jul 25, 2018 2:17 pm

(Possible) Liquid water 'lake' revealed on Mars
Researchers have found evidence of an existing body of liquid water on Mars.

What they believe to be a lake sits under the planet's south polar ice cap, and is about 20km (12 miles) across.

Previous research found possible signs of intermittent liquid water flowing on the martian surface, but this is the first sign of a persistent body of water on the planet in the present day.

Lake beds like those explored by Nasa's Curiosity rover show water was present on the surface of Mars in the past.

However, the planet's climate has since cooled due to its thin atmosphere, leaving most of its water locked up in ice.

The result is exciting because scientists have long searched for signs of present-day liquid water on Mars, but these have come up empty or yielded ambiguous findings. It will also interest those studying the possibilities for life beyond Earth - though it does not yet raise the stakes in the search for biology.

The discovery was made using Marsis, a radar instrument on board the European Space Agency's (Esa) Mars Express orbiter.
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Re: SPACE - random thread about space stuff

Post by Jeff V » Wed Jul 25, 2018 2:32 pm

Awesome, now that we have the resource, we can build a brewery to harvest that resource.

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Re: SPACE - random thread about space stuff

Post by Isgrimnur » Wed Jul 25, 2018 2:36 pm

Does Nestlé have a space program?
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Re: SPACE - random thread about space stuff

Post by Max Peck » Fri Jul 27, 2018 1:57 pm

Einstein theory passes black hole test
S2 is one member of a star cluster that surrounds Sagittarius A*. These stars reach mind-boggling speeds when they approach the black hole - S2 comes very close to Sagittarius A* every 16 years.

Astronomers followed S2 before and after it passed close to the black hole on 19 May 2018, tracking its progress hour-by-hour.

When S2 passed by the black hole at a distance just 120 times that of the Earth from the Sun, it reached an astonishing orbital velocity of 8,000 km/s. That corresponds to about 2.7% of the speed of light.

The astronomers found that light from the star was indeed stretched to longer wavelengths by the very strong gravitational field of Sagittarius A*.

The results were perfectly in line with the theory of general relativity - and not explained by Sir Isaac Newton's ideas - which exclude such a shift.
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Re: SPACE - random thread about space stuff

Post by Isgrimnur » Fri Jul 27, 2018 2:23 pm

a distance just 120 times that of the Earth from the Sun
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Re: SPACE - random thread about space stuff

Post by Daehawk » Fri Aug 03, 2018 3:31 pm

12-13 Aug Perseids. Should be a dark viewing chance. And that date there is the peak. You can view a week before and after.

EDIT: Updates.

The Perseids: Astronomers prepare for Earth to ‘plow’ into fiery meteor shower

A Mysterious, Powerful Force Is Flinging Radio Waves at Us from Deep Space
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Re: SPACE - random thread about space stuff

Post by raydude » Tue Aug 14, 2018 9:36 am

APL's Parker Solar Probe launched on Sunday*. Folks at the Lab are pretty excited about it.

* Coincidentally also my birthday so that was cool.

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Re: SPACE - random thread about space stuff

Post by Kraken » Tue Aug 14, 2018 9:42 am

If it launched at night, how is it going to find the sun????

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