You're familiar with contrails, the tracks left by airplanes as they move across the sky. Those are made when hot water vapor from the exhaust of jet engines hits cold, high-altitude air and condenses into ice.
Under the right conditions, big ships can leave a very similar trail, but it's caused by a slightly different mechanism. Incomplete combustion of fossil fuels means little particles of dust—aerosols—come out in the exhaust. Water molecules are attracted to these aerosols. As water builds up around a piece of dust, you get a cloud. Yes, it's basically cloud-seeding.
This photo of oceanic "contrails" over the Pacific is one of NASA's Images of the Day today, but it's not the first time they've featured this kind of photo. This is a cool phenomenon and they've posted photos of it in 2002, 2005, and 2009.
Thanks Philip Bump!
The Breitbart chief and Trump campaign CEO’s sexist bullying was evident in the early days of Biosphere 2 in Arizona, then a quasi “space colonization” and environmental research project. Stephen K. Bannon, who recently took a leave from running Breitbart.com to become Donald Trump’s chief campaign executive, once bullied women in the historic environmental research […]
Jesse Singal requested this shoop, and I delivered. After all, who’s downloading pirated papers? Everyone. (I’ve uploaded this to Redbubble if you’d like a poster—of course, you can just as well pirate it.)
Hydraulic Press Channel shows why carbon fiber and variants like carbon nanotubes have so many uses: depending on the configuration, they can hold up against the hydraulic press.
If you’re like us, you occasionally get ambitious with your dinner and try to cook multiple sides plus a main dish. These efforts usually end as a cold meal plus a pile of dishes to wash. MasterPan Multi-Sectional Meal Skillet makes it super easy to make multiple dishes at once without the hassle. This heavy gauge bottom pan […]
The Lytro Illum is our all-time best-selling camera and here’s our best deal yet. Apply the code “Lytro10” to save an extra 10% off on this camera’s mind-blowing functionality in this exclusive one day only sale.
If you’re looking to earn a top salary in the tech industry, there’s no better career than coding. However, sometimes the hardest part of entering this career path is knowing where to begin.We took the Complete Web Developer Course because it took that decision out of our hands. This course teaches beginner-friendly coding languages that will also help land an immediate […]