I know this can be hard to picture in your head, but the beauty of it is that once you do, this map sings. You can instantly see what’s what: the motion of the gas, where it’s more dense than other locations, how it’s distributed. It also shows our location in the galaxy! All those changing velocities depend on the Sun’s velocity, the velocity of the gas, but also the direction of the Sun’s motion and its position in the Milky Way’s disk. That’s a stunning amount of information.

This is fascinating.

If you like card tricks, you’ll love this.

I’m always fascinated by documentaries about marine life, and I found this quite brilliant.

How the crab invites its house guests to come along to its new house is particularly interesting.

(I won’t say any more; go watch.)

Britain has voted to leave the European Union, a historic decision sure to reshape the nation’s place in the world, rattle the Continent and rock political establishments throughout the West.

With 309 of 382 of the country’s cities and towns reporting early on Friday, the Leave campaign held a 52 percent to 48 percent lead. The BBC called the race for the Leave campaign shortly before 4:45 a.m., with 13.1 million votes having been counted in favor of leaving and 12.2 million in favor of remaining.

The value of the British pound plummeted as financial markets absorbed the news.

This is historic. Only time will tell whether the net effects will be good or bad — for Britain and for the European Union. (I haven’t followed the intricate details of the pros and cons, but I understand that the full effects and implications are hard to predict if only because the interactions and agreements between countries are so intertwined.)

P.S.— The following are required viewing:

• Difference between the United Kingdom, Great Britain and England
• European Union explained

A great fighter—“The greatest ever”—but he was so much more than that.

[…] as a young heavyweight champion he converted to Islam and refused to serve in the Vietnam War, and became an emblem of strength, eloquence, conscience and courage. Ali was an anti-establishment showman who transcended borders and barriers, race and religion. His fights against other men became spectacles, but he embodied much greater battles.

Also, these are must watch, if you haven’t seem them already:

Rest in peace, sir.