Hues In A Crater Slope

Hues in a Crater Slope

by NASA’s Marshall Space Flight Center   Impact craters expose the subsurface materials on the steep slopes of Mars. However, these slopes often experience rockfalls and debris avalanches that keep the surface clean of dust, revealing a variety of hues, like in this enhanced-color image from NASA’s Mars Reconnaissance Orbiter, representing different rock types. The bright reddish material at the top of the crater rim is from a coating of the Martian dust. The long streamers of material are from downslope movements. Also revealed in this slope are a variety of bedrock textures, with a mix of layered and jumbled deposits. This sample is typical of the Martian highlands, with lava flows and water-lain materials depositing layers, then broken up and jumbled by many impact events. This image was acquired by the High Resolution Imaging Science Experiment (HiRISE) camera on Feb. 28, 2011 at 15:24 local Mars time. It is a stereo pair with image ESP_021454_1550. The University of Arizona, Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., Boulder, Colo. NASA’s Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Mars Reconnaissance Orbiter Project for NASA’s Science Mission Directorate, Washington. Image Credit: NASA/JPL/University of Arizona Caption: Alfred McEwen NASA Media Usage Guidelines

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8 years ago

23 science facts we didn't know at the start of 2016

1. Gravitational waves are real. More than 100 years after Einstein first predicted them, researchers finally detected the elusive ripples in space time this year. We’ve now seen three gravitational wave events in total.

2. Sloths almost die every time they poop, and it looks agonising.

3. It’s possible to live for more than a year without a heart in your body.

4. It’s also possible to live a normal life without 90 percent of your brain.

5. There are strange, metallic sounds coming from the Mariana trench, the deepest point on Earth’s surface. Scientists currently think the noise is a new kind of baleen whale call.

6. A revolutionary new type of nuclear fusion machine being trialled in Germany really works, and could be the key to clean, unlimited energy.

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8. Earth has a second mini-moon orbiting it, known as a ‘quasi-satellite’. It’s called 2016 HO3.

9. There might be a ninth planet in our Solar System (no, Pluto doesn’t count).

10. The first written record demonstrating the laws of friction has been hiding inside Leonardo da Vinci’s “irrelevant scribbles” for the past 500 years.

11. Zika virus can be spread sexually, and it really does cause microcephaly in babies.

12. Crows have big ears, and they’re kinda terrifying.

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8 years ago
Please Join The Department Of Awesome Natural Phenomena As They Marvel At The Jaw-dropping Sight Of A

Please join the Department of Awesome Natural Phenomena as they marvel at the jaw-dropping sight of a ‘dirty thunderstorm’ taking place above Sicily’s Mount Etna during its latest eruption on December 3, 2015. Mount Etna is the tallest active volcano on the European continent.

A dirty thunderstorm, also known as volcanic lightning, is the result of electrical charges generated by the collision of rock fragments, ash, and ice particles in a volcanic plume. These collision produce a static charge in the same way that colliding ice particles do during regular thunderstorms.

Freelance photographer Marco Restivo captured this incredible image by combining a sequence of five separate photos.

Head over to The Huffington Post for timelapse video and additional images.

[via The Telegraph]


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8 years ago
The Clouds Of Orion The Hunter Https://go.nasa.gov/2n7rVh9

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7 years ago

Physicists: we don’t really understand how the big bang happened

Secondary media:

Physicists: We Don’t Really Understand How The Big Bang Happened

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saients - How Cool Is That?
How Cool Is That?

Stardate: 2258.42...or, uh, 4... Whatever. Life is weird, at least we've got science.

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