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If Extraterrestrials Are Watching Our TV Signals, This Is What They Are Currently Seeing


(Click on image for high res version)

During the first 4.5 billion years nothing but silence has emanated from our planet on the cosmic radio dial. Then, during the past 100 years Earth started broadcasting radio and TV signals which have leaked off our planet and out into space. If there is an advanced civilization within 100 light years of Earth (as the radio and TV waves travel at the speed of light) listening for messages, they could hear our first broadcasts. They might think we are still in World War 1 or 2. It makes you wonder what impression this would give them of our race. If they were on the ball and sent out a reply to us, depending on their distance from us, it would take up to 100 years for their reply to reach us.

Via Flixxy.com.

Who needs Pokemon when you have creatures like this? Acraga coa

Technically known as Acraga coa, and first characterized by William Schaus in 1892. I can only imagine him stumbling upon one of these – I wonder what the vernacular of the day was for “Holy Sh*t!”

As well, this is the cristal stage before it grows up to be a moth. Which, apparently, means it will one day look like this:

Caterpillar image via Project Noah. Moth image by David Brownwell, via Whatisthatbug. Also via boingboing.net.

Where are you from? (Or how to tell if someone is in academia).

Sad but true.

By PHD Comics.

The “Have to Pee” versus “Have to Sneeze” Graph.

Via Imgur.

A is for Astronaut, C is for Chemist

Only the letters A, B, and C have been released at the Tiny Alphabet site, but so far, two science-y ones out of three isn’t bad.

By Tini Malitius.

RIP Maurice Sendak

This last picture is from a book that my kids used to LOVE. Called “A Very Special House,” it was very special indeed. Would quite often pass it on as a house warming gift.

RIP Maurice Sendak.

Neil deGrasse Tyson quote (in graphic novel form)

By Gavin Aung Than at Zen Pencils.

Incredibly clever photo of a light bulb (sort of)

This one would make an awesome slide when talking about energy generally.

By Brock Davis, via Colossal.

Petri Dish (with Microbial Growth) Mini Quilt.

By Cornflowerbluestudio.

I’m currently gutting one of our bathrooms, and Kate has just O.K.’d me redoing it in this style.

Should I?

Via Apartment Therapy.

This space video is beautiful to watch but also makes me feeling very very small. Stunning mix of Cassini and Voyager footage.

I suggest watching this in HD, on a large screen, and preferably in the dark.

The footage in this video is derived from image sequences from NASA’s Cassini and Voyager missions. I downloaden a large amount of raw images to create the video.

Mixed by Sander van den Berg.

Botanicula! Amazing looking video game where the protagonist look like fungi.

Check out the website here.

Short lived American bank notes from 1896 depict “Electricity” as a child and then as a pretty awe inspiring adult.

Plus, “Science” makes an appearance! From the Futility Closet.

On the $2 note, Science presents Steam and Electricity (as children) to Commerce and Manufacture. The reverse bears portraits of Robert Fulton and Samuel Morse.

The almost impossibly glorious $5 note depicts Electricity Presenting Light to the World. She is flanked by Strength, Fame, and Peace. The New York Times wrote, “The arrangement of this composition, the grace of pose in each figure, and the idea connected with the designs of this artist entitle it to a place beside the finest allegorical designs in the world.”

Unfortunately, the Treasury got a new secretary the following year, one who favored simple, clear designs, and he canceled more than $54 million in certificates as they came into the Treasury. “It can be said authoritatively … that no more of the so-called ‘new certificates’ will be printed,” the Times reported sadly in May 1897. “Neither will fresco painters be called in to make designs for the substitutes.”

Piñata Anatomy: In which we learn that twizzlers make an excellent stand-in for muscle tissue.

Makes the concept of dissection a little disconcerting (as in, let’s open it up by beating the crap out of it).

By the Carmichael Collective, via Colossal.

A modern classic: Is Chewbacca trapped in my nightstand?

IKEA instructions to assembling the Large Hadron Collider

From College Humor, via Boingboing.net.

In a word: “Whoa…” Augmented Reality Sandbox

This is seriously amazing. I want boardgames with this feature!

Via Colossal.

Imagination is more important than knowledge. Einstein quote. #poster

Also by Lea G. (but sold out for now). Via Hey Oscar Wilde!

Got Chemistry?

By Lea G. and available at Etsy.

The physics of the Hulk’s jump.

With lots of great discussion like the below:

While I am talking about mass, there is something that always bothered me. Bruce Banner is a pretty normal-looking human, right? But then he turns into The Hulk (I guess The is his first name since it is always capitalized). So, if he goes from 70 kilograms as a human to almost 300 kg as The Hulk, where does the extra mass come from? What if this is conversion of energy to mass from Einstein’s E = mc2? This would take 2.7 x 1019 Joules of energy. Where does that come from? The total power output from the Sun is about 4 x 1026 Watts. However, only about 1.7 x 1017 Watts hits the Earth. If The Hulk used ALL of this solar energy, it would take over two and a half minutes in order to capture enough energy to “transform.” I guess this could be the “getting angry time.”

Read the whole thing at Dot Physics.