throwaway_yy2Di

6 ms·

1.
by throwaway_yy2Di 10y ago
It's easy to tell computer engines aren't analyzing perfectly, because when we tell to them to play themselves, they lose a large fraction of their games, as both colors. Perfect play would always force at least a draw from at lea
2.
by throwaway_yy2Di 10y ago
Apropos, to anyone who wants to watch the live moves, with expert commentary, they are here (this is the defendant from the Reuters story): https://chess24.com/en/read/news/chess24-win-moscow-case-ann... htt
3.
by throwaway_yy2Di 10y ago
Not my workaround: http://spectrum.ieee.org/aerospace/space-flight/titan-callin... http://descanso.jpl.nasa.gov/seminars/abstracts/viewgraphs/H... This was an extremely serious bug
4.
by throwaway_yy2Di 10y ago
Apropos, the Gaia space telescope's first data release is next week. It's an extremely large dataset of the kinematics (3d position + velocity) of Milky Way stars. http://www.cosmos.esa.int/web/gaia/dr1
5.
by throwaway_yy2Di 10y ago
...tidally locked, possibly losing their water and atmosphere in tens or hundreds of millions of years. How would this happen?
6.
by throwaway_yy2Di 10y ago
Here's a better answer on /r/askscience: Can we directly image the planet from earth? 1. "The planet/star contrast is 10^-7 " This basically means for every 10,000,000 photons from the star, we w
7.
by throwaway_yy2Di 10y ago
To piggyback on this, the Nature paper (which is paywalled) has a free preprint version here: http://www.eso.org/public/archives/releases/sciencepapers/es... (PDF)
8.
by throwaway_yy2Di 10y ago
However, there is reason to hope that the even larger European Extremely Large Telescope will have enough resolution (about 5e-8 radians? hard to tell from their official publications) 6-12 mas is the advertised figure
9.
by throwaway_yy2Di 10y ago
You're exactly right; good catch.
10.
by throwaway_yy2Di 10y ago
Yes, because the lifespan of low-powered red dwarfs is vastly longer than the sun's. The wiki page cites a figure of 4 trillion years (!) for Proxima: https://en.wikipedia.org/wiki/Proxima_Centauri
11.
by throwaway_yy2Di 10y ago
The planet is about 0.05 AU from Proxima Centauri, meaning we need an angular resolution of about 1.9e-7 radians to even distinguish it from its host star. Is that realistic? Much more than that; that's the angle for
12.
by throwaway_yy2Di 10y ago
I don't think JWST could even resolve it from its parent star, judging by [0]. They're too close together. Proxima Centauri has a luminosity of 0.0017 suns [1], so Earth-like conditions would occur at ~sqrt(0.0017) au = 0.04 au, a
13.
by throwaway_yy2Di 10y ago
can it be easily ruled out? Yes: parallax breaks it. If something's colinear with a star today (and occults it), it won't be colinear 6 months later, when the Earth's on the other side of the sun. At 2 light years f
14.
by throwaway_yy2Di 10y ago
That can't physically work: for one because the parallaxes would be different and almost never line up. If something's colinear with a star today, it won't be colinear 6 months later, when the Earth's on the other side o
15.
KIC 8462852 Faded Throughout the Kepler Mission(arxiv.org)
6 points by throwaway_yy2Di 10y ago|1 comments
16.
by throwaway_yy2Di 10y ago
Which program are you referring to? LSST is fully funded. https://www.lsst.org/science/solar-system/potentially-hazard... https://en.wikipedia.org/wiki/Large_Synoptic_Survey_Telescop...
17.
Research bolsters case for a present-day subsurface ocean on Pluto(news.brown.edu)
1 points by throwaway_yy2Di 10y ago|0 comments
18.
by throwaway_yy2Di 10y ago
Mathematica is one the most useful tools for this kind of experimental programming. A minimum implementation can be a single REPL line (if you prefer FP style). That's one line from blank page to "play audio"; it's hard
19.
by throwaway_yy2Di 10y ago
If you are the first almost live form, you have plenty of time, and can evolved in an environment that has plenty of food. Something like the brown goo of Titan, with lots of hydrocarbons and other small molecules that yo
20.
by throwaway_yy2Di 10y ago
I think what will really help us to get at a better estimate is to answer the question whether there exists life in our solar system that evolved independently of that on Earth. That's definitely the big question. But
21.
by throwaway_yy2Di 10y ago
"One in 10 billion trillion" sounds like a very large number, and it's put in italics for emphasis," And the author even asserts it's "irrational" to think real-world probabilities are this small! It&#x2
22.
by throwaway_yy2Di 10y ago
If you parse the article carefully, the entire argument is summarized as "There are more than 10^22 planets, therefore ETI probably exists[ed] if P(intelligent life|planet) > 10^-22". Specifically, unless the probabilit
23.
by throwaway_yy2Di 10y ago
There's more than a dozen solar system objects predicted to have liquid water: http://www.planetary.org/blogs/emily-lakdawalla/2015/0312171...
24.
by throwaway_yy2Di 10y ago
The article neglects to mention that the Congressional Act which forces (?) the FDA's hand, was one that Phillip Morris sponsored and lobbied for. I think this is key to understanding why the FDA is acting like this, seemingly against
25.
by throwaway_yy2Di 10y ago
Here's the discovery paper: http://hubblesite.org/pubinfo/pdf/2016/18/pdf.pdf
26.
by throwaway_yy2Di 10y ago
Ah, thanks for the update.
27.
by throwaway_yy2Di 10y ago
Tangentially, there's even larger public datasets coming out of astronomy. PanSTARRS' imaging survey will make 2 PB available online. They even have a picture [0] of the completed dataset in transit, if you wondered what 2 PB of H
28.
by throwaway_yy2Di 10y ago
"For a 4m sail, for example, the diffraction limit spot size on Earth would be on order of 1000m." That must be a misprint; the diffraction-limited spot size would be on the order of 10 million kilometers. It's
29.
by throwaway_yy2Di 10y ago
The general idea is to draw n uniform samples from [1..N] and return them in sorted order. You can generate these incrementally, in order (no sort needed). The mean difference between successive samples is ~N/n. If the samples are unif
30.
by throwaway_yy2Di 10y ago
This works, and is so much simpler. It's not quite the same problem though; the algorithm described returns samples in sequential order . They mention performance reasons for this (C-f "tape sampling"). It also has the limit

More ›