Mostrando postagens com marcador Earth. Mostrar todas as postagens
Mostrando postagens com marcador Earth. Mostrar todas as postagens

This Is What the Hottest Place on Earth Looks Like


You're looking at a satellite image of the Dasht-e Lut salt desert in southeast Iran. If you think it looks a bit weird, that' because it is: it's widely regarded as the hottest place on Earth.

The highest land surface temperature ever recorded—from space, by satellites—was in the Lut Desert back in 2005. It reached a staggering 70.7ºC. That's 160 Fahrenheit. That is off the wall.

So, what can you see in the picture? The European Space Agency explains:

The light area in the centre of the image are the long, parallel wind-carved ridges and furrows. The darker area to the east is an extent of massive sand dunes, some reaching up to 300 m tall. In the upper-right section we can see a light green, shallow body of water that straddles Iran’s border with Afghanistan... In the lower-left we can see the white, snow-capped Jebal Barez mountains.

The image was captured by Envisat’s MERIS instrument. And is a welcome reminder that we shouldn't grumble about the weather. [ESA]


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What Earth Would Be Like if Humans Had Never Existed


It's one of those things you've probably idly wondered but never really lent masses of thought: what the hell would the planet be like if humans had never existed? Fortunately, this video tries to explain.

It's hard enough to imagine what the world was like before humans, let alone how it may've turned out if we'd never appeared. But New Scientist decided to "rewind time, erase our ancestors, and hit play"—and this is the result. I won't ruin the surprise: watch it and find out for yourself. [New Scientist]


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How Life Would Look If the Moon Was as Close to Earth as the ISS


Even though it might not look like much when it's so far away, the Moon is pretty huge. In fact, if it was a little closer—as close as the ISS for example—it would monopolize the entire sky.

Yetipc1, apparently a serious astronomy nerd, took the liberty of figuring out what it would look like if ol' Luna was a mere 270 miles out, instead of the 238,855 miles it actually is. Suffice it to say it looks a bit...different. Destiny, anyone?

Yetipc1 explains some of the trickier details in the video's description:

Normally the Moon orbits much slower than the earth rotates so it rises in the east and sets in the west, however at 420km it orbits much faster, faster than the earth rotates underneath, therefore it will rise in the west and set in the east.

...The Moon would orbit very fast, somewhere between 130 mins and 90 mins. ...The time in the video is sped up. The moon would transverse the sky slower. Like 10 mins (rough guess)

Number-fudging aside, it's a wild look into a weird alternate universe. Pretty awesome. [Yetipc1 via Reddit]

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