☛ When Galaxies collide…

A composite image created by combining data from the Chandra X-Ray Observatory and the Hubble Space telescope, this is a stunning image of two galaxies colliding. Both of them are spiral galaxies, and they are on the verge of a collision—with their disks oriented at 90 degrees to each other!

Well, “on the verge” is in galactic time scales, which means they’ll collide in a few million years. And considering that this is 450 million lightyears away from us, the event has already occurred—we just haven’t seen it yet.

A detailed description of the image is present as a caption with the photo itself. Go see it!

Choosing passwords

To the modern web user, passwords are usually a nightmare, especially with the modern trend of “your password must contain every possible category of keys”. Well, how effective is that sort of thing?

Here’s a take on that.

(By the way, a measure of a great publication of any sort is when you end up “liking” and “sharing” most of its content. XKCD is one such.)

Of course, the flip side of the argument in the comic is: most users don’t think of random sequences of words, but most often come up with the easiest-to-guess phrases. In this case, some security is better than no security.

(Oh, and don’t forget to mouseover over the comic itself. And do that over every xkcd comic. You’re welcome.)