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Chris Hines
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298 followers
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Watch and behold!
These are my people. I must go to them.
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An excellent thought provoking presentation about how to design and write software. Worth the time.
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Science FTW
Baby Picture

Every now and then in astronomy we’ll get an image that lets us actually see phenomena we have previously just deduced from other observations. The image above is one of them. It was taken by the Atacama Large Millimeter/submillimeter Array (ALMA), and shows an exoplanetary system in the process of forming. This isn’t an artistic rendering, it’s an actual image.

We’ve known for a while that planetary systems form along with a star. Known as the nebular model, the basic idea is that as a star forms within a large nebula (known as a stellar nursery) the surrounding gas and dust form an accretion disk around the star. Over time, protoplanets form within these disks, eventually clearing the system and becoming a planetary system such as our own solar system. We have a lot of evidence to support this model. We’ve observed stars forming within nebulae, and we have computer simulations showing how stars form an are cast out of a stellar nursery.  We’ve observed protoplanetary disks around young stars, and we have computer simulations showing how protoplanets begin forming within these disks. We’ve also found lots and lots of exoplanets. So we’ve known that out in the universe there are young stars where protoplanets are actively forming, we just haven’t observed them directly. Until now.

This particular image is of a star known as  HL Tauri. It is a young T-tauri type star about 450 light years away. The image was taken at wavelengths on the order of a millimeter, which is particularly good at penetrating the nebular material surrounding the young star. Because ALMA is an array of telescopes spread across 15 kilometers, it can capture images with a higher resolution than Hubble.

It’s the detail of this image that is astounding. Not only can you clearly see the disk, you can actually see gaps in the disk. These gaps are due to protoplanets either clearing the region of their orbit, or creating resonances within the disk to produce gaps, similar to the way Jupiter produces Kirkwood gaps in the asteroid belt. This image is crystal clear evidence of protoplanet formation, just as the nebular model predicts.

ALMA is still in its early stages. In a way, it is one of ALMA’s baby pictures as it gets up to speed. It also happens to be a baby picture of a whole new solar system.

Image: ALMA (ESO/NAOJ/NRAO)
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I've seen several articles like this recently. This one resonated the most with me.
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I bet you've never seen fireworks like this before.
This is absolutely beautiful.

Having always been fascinated by heights, and viewing things from high places, this is like a realization of a childhood dream. Ever since I was a child, I've dreamed of flying like this. Now it makes me want to go spend way too much money on a high-end drone :)

Fireworks filmed with a drone

Given that I'd probably be a terrible (or at least reckless) pilot, I now need one of these as well: GimBall (h/t +David Brin)
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On Friday I had the occasion to use the excellent pipe package written by +Gustavo Niemeyer and it really made my day.

Gustavo, if the opportunity arises at Gophercon in a few weeks, I would gladly buy you a beverage. If that doesn't work out, let this serve as my public thanks for all you have done for the benefit of the Go community.

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This tidbit came to me via +Craig Trader.

Pretty cool if you're not interested in accumulating a collection of Legos, but you still want to have the fun of putting the sets together.
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