NASA announced the discovery of 719 new planets today. That brings the tally of known planets in our universe to almost 1800. 20 years ago, that number was not more than 15 (including the nine planets orbiting the Sun). Here's a rough timeline of the dramatically increasing pace of planetary discovery:

4.54 billion BCE-1700: 6
1700-1799: 1
1800-1899: 1
1900-1950: 1
1951-1990: 1
1991-2000: 49
2001-2005: 131
2006-2010: 355
2006: -1 [for Pluto :( ]
2011-2014: 1243

Last year, Jonathan Corum made an infographic of the sizes and orbits of the 190 confirmed planets discovered at that point by the Kepler mission. I hope the Times updates it with this recent batch.

• astronomy
• infoviz
• Jonathan Corum
• NASA
• science

In a presentation for the Visualized conference, Jonathan Corum says that he looks for the "weight of rain" when working on data graphics.

So when I'm looking at data, or working on an explanatory graphic, these are the moments I'm looking for. Little "Aha!" moments that I can point to, and say "Look here, something happened," and then try to explain. Often those small moments can help lead a reader into the graphic, or help to explain the whole.

The actual non-metaphorical weight of rain is surprisingly heavy; an inch of rain on an acre of land weighs 113.31 tons.

• design
• infoviz
• Jonathan Corum
• weather