Predicting snowstorms on Mars

A view of the north polar ice cap on Mars, as seen by the Mars Reconnaissance Orbiter. Credit: NASA-JPL / Caltech
A view of the north polar ice cap on Mars, as seen by the Mars Reconnaissance Orbiter.
Credit: NASA-JPL / Caltech

Mars is famous for its duststorms, which can grow big enough to cover the entire planet. But did you know that it also has snowstorms? These storms can dump a lot of snow on the north polar cap during the bitterly cold winter, and now scientists say they can more accurately forecast them, it was reported yesterday, which would aid any future rover missions in these areas.

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The ‘red rose’ of Saturn: stunning new colour images of giant hurricane

Cassini image, in false colour, showing the massive "red rose" hurricane at Saturn's north pole. Credit: NASA / JPL-Caltech / Space Science Institute
Cassini image, in false colour, showing the massive “red rose” hurricane at Saturn’s north pole.
Credit: NASA / JPL-Caltech / Space Science Institute

Hurricanes are an incredible force of nature, and these huge rotating vortexes of wind are an amazing sight when viewed from space. But Earth is not the only planet that has hurricanes, and there is one on Saturn that dwarfs any on our own planet. Now, the Cassini spacecraft has taken more breath-taking colour images of this colossal wind storm.

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Cassini sees meteor impacts in Saturn’s rings

Just like planets and moons, Saturn’s rings experience frequent meteor impacts. Credit: NASA / JPL
Just like planets and moons, Saturn’s rings experience frequent meteor impacts.
Credit: NASA / JPL

Meteors flashing across the sky are a common sight here on Earth, but of course they are not limited to only our planet; these bits of rocky debris, smaller pieces of asteroids and comets known as meteoroids, can be found just about everywhere in the solar system (becoming meteors when entering and burning up in the atmosphere). Now, the Cassini spacecraft has observed similar impacts occurring in another very different and far-away place: the rings of Saturn!

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There’s a lot of water in Jupiter’s atmosphere, thanks to comet impact

Dark scars in Jupiter's upper atmosphere created by the Shoemaker-Levy 9 impact in 1994, as photographed by the Hubble Space Telescope. Credit: Hubble Space Telescope / NASA
Dark scars in Jupiter’s upper atmosphere created by the Shoemaker-Levy 9 impact in 1994, as photographed by the Hubble Space Telescope. Credit: Hubble Space Telescope / NASA

The impact of comet Shoemaker-Levy 9 into Jupiter in 1994 was a spectacular event for astronomers. The scars in Jupiter’s atmosphere lasted for weeks afterward; while those have long since faded, there are still other features of the impact visible even now, it was announced last Tuesday.

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