Categories
Architecture & Design Space

What cities look like at night without electricity

In his series Villes éteintes (Darkened Cities), French photographer Thierry Cohen imagines the world’s biggest cities at night without urban light.

Cohen uses a special exposure technique called day for night which enables him to capture the cities in the daytime but increase the impression of darkness. Then, he combines the city skylines into the backdrop of starry skies captured at the same altitude.

“By combining two realities, I am making a third that you cannot see … but it exists! I am showing you the missing stars,” Cohen told Wired.

“Photography is way of showing things that we can’t see. Photography is a way to dream. I am not showing you post-apocalyptic cities, merely cities without electricity. I am bringing back the silence.”

Cities lit by the stars

What appears to be an eerie blackout in some of the world’s biggest cities (Hong Kong, LA, New York, Paris, Rio, Shanghai, Tokyo) nonetheless creates a beautiful mirage.

“Photography is about poetry more than it is about reality,” added Cohen. “It is how you see the world. You can show the world you want to show.” See more images on the artist’s website.

NYC at night
New York City
Hong Kong at night under stars
Hong Kong
Paris at night under stars
Paris
Tokyo at night under stars
Tokyo
San Francisco at night under stars
San Francisco
Categories
Science Space

See the sharpest movie of the sun ever made, with each plasma cell the size of Texas

The sun is about 93,000,000 miles away from Earth. The sun’s light travels at the speed of 186,000 miles per second, in total taking just 8 minutes to reach us.

The National Solar Observatory (NSO) has brought us the sharpest view of the sun we’ve seen yet using the Daniel K. Inouye Solar Telescope. Each plasma cell is about the size of Texas.

This is how NSO describes capturing the footage:

The Daniel K. Inouye Solar Telescope has produced the highest resolution observations of the Sun’s surface ever taken. In this movie, taken at a wavelength of 705nm over a period of 10 minutes, we can see features as small as 30km (18 miles) in size for the first time ever. The movie shows the turbulent, “boiling” gas that covers the entire sun.

The cell-like structures – each about the size of Texas – are the signature of violent motions that transport heat from the inside of the sun to its surface. Hot solar material (plasma) rises in the bright centers of “cells,” cools off and then sinks below the surface in dark lanes in a process known as convection. In these dark lanes we can also see the tiny, bright markers of magnetic fields. Never before seen to this clarity, these bright specks are thought to channel energy up into the outer layers of the solar atmosphere called the corona. These bright spots may be at the core of why the solar corona is more than a million degrees!

Categories
Space

Breathtaking views of the Earth from the International Space Station

Ever wanted to see Planet Earth from 248 miles away?

Now you can, thanks to these epic views of our planet from the International Space Station in the thermosphere.

Watch the crescent Earth rotate among the solar panels and the sun in various views as the International Space Station orbits Earth at 17,500mph.

Stunning. And be sure to follow the International Space Station on Twitter for more live shots.

views of the Earth from the International Space Station
views of the Earth from the International Space Station
views of the Earth from the International Space Station

Videos via Nasa/Images via Astro_Jessica

Categories
Space

What the northern lights look like from a U-2 spy plane at 70,000ft.

What the northern lights look like from a U-2 spy plane at 70,000ft.
What the northern lights look like from a U-2 spy plane at 70,000ft.
What the northern lights look like from a U-2 spy plane at 70,000ft.
What the northern lights look like from a U-2 spy plane at 70,000ft.

U-2 pilot and instructor and avid photographer Ross Franquemont took these snaps of the spectacular aurora borealis — or, northern lights, while flying the legendary U-2 spycraft.

“I had no idea how fast the aurora moved and changed. It danced around, changing shape several times a second. That made it a challenge for the photographer in a spacesuit sitting in shaking metal can moving 500 mph,” Ross told The Aviationist about the photos.

The northern lights, which also occur in the Southern Hemisphere — the “Aurora Australis” — have always fascinated mankind. They develop as a result of a solar storm that originates from the sun and blows a stream of charged electrons toward Earth.

The process creates a natural light phenomenon when the electrons collide with the Earth’s upper atmosphere. The colors green and red display between 60 to 150 miles in altitude when the electrons hit atoms of oxygen. Meanwhile, the blue and purple/violet colors occur up to 60 miles away from Earth’s magnetic field.

Categories
Science Space

Nasa unveils Pumpkin sun just in time for Halloween

Just in time for Halloween, NASA has posted a photo of the sun that looks like a massive flaming jack-o’-lantern.

NASA’s Solar Dynamics Observatory shot the photo earlier this month.

The fiery slits in the image reveal the most active parts of the sun.

Writes NASA:

Active regions on the sun combined to look something like a jack-o-lantern’s face on Oct. 8, 2014. The active regions appear brighter because those are areas that emit more light and energy — markers of an intense and complex set of magnetic fields hovering in the sun’s atmosphere, the corona. This image blends together two sets of wavelengths at 171 and 193 angstroms, typically colorized in gold and yellow, to create a particularly Halloween-like appearance.

Credit: NASA/GSFC/SDO
Categories
Space

The evolution of the spacesuit

As spacesuit design continues to become thinner and more dynamic — there are touchscreen sensitive gloves, an attached helmet and built-in ventilation in the latest uniform — it’s worth looking at how both US and Russian spacesuits have evolved over time.

Start by looking at the original suit designed for the moon mission above, then check out the diagram below. I still like the simplicity and balance of the Apollo A7-L EVA but the blue Apollo A5-L suit is ace as well.