Anjo

Over geological timescales – on the order of millions of years – even hard substances like rock can flow like a fluid. Heat from the Earth’s core drives convection inside our mantle, and that fluid motion ultimately drives the plate tectonics we experience here at the surface. But most other planetary bodies, including those with mantle convection similar to ours, don’t have a surface that shifts like our tectonic plates. Mars and Venus, for example, have solid, unmoving surfaces. The images above provide a peek at what goes on beneath. The upper image shows a simulation of mantle convection inside Mars over millions of years. The lower image is a timelapse of dye convecting through a layer of glucose syrup being heated from below. Notice how both examples show evidence of convective cells and plumes that help circulate warm fluid up and colder fluid downward. (Image credit: Mars simulation - C. Hüttig et al, source; N. Tosi et al., source; submitted by Nicola T.)

Transit of Venus in 2012

Credit: NASA / SDO

Um olhar apenas.

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Não importa o tempo ou o artista a cerejeira sempre é a rainha da imagem.

Hawk and Cherry Blossoms.   Woodblock print, about 1834, Japan, by artist Katsushika Hokusai

Mitosis vs meiosis comparison? There’s a GIF for that. (⌐■_■)

Be sure to check out all our science GIFs here for your studyblrs, teacher websites, presentations, or general amusement! Just please keep our name on there and don’t sell them! :D

Linda imagem.

A stereo image of Jupiter’s atmosphere, derived from data collected by the Juno spacecraft during perijove 3.  These images, taken at different point in the orbit, can be combined to reveal the 3D structure and relief of clouds in the southern atmosphere.  To see the image in 3D, relax the eyes until the white circles overlap, then look at the image.  Alternatively the image can be viewed with Google Cardboard or another VR device.

Image source: NASA

Processing: James Tyrwhitt-Drake

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