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Astronomy

Cassini Spies Titan’s Tallest Peaks

The trio of ridges on Titan known as Mithrim Montes is home to the hazy Saturnian moon’s tallest peak. Image credit: NASA/JPL-Caltech/ASI Click for a full size image Image credit: NASA/JPL-Caltech/ASI Click for a full size image Cassini Spies Titan’s ...

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HiRISE: 45,000 Mars Orbits and Counting

NASA’s Mars Reconnaissance Orbiter shortly before swinging into orbit around Mars ten years ago. (NASA/JPL-Caltech) Click for a full size image HiRISE: 45,000 Mars Orbits and Counting Ten years ago on March 24, the UA-built camera began taking the most ...

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Solar storms trigger Jupiter’s Northern Lights

Jupiter’s X-ray emission (in magenta and white). Credit: Joseph DePasquale, Chandra X-ray Center. Solar storms trigger Jupiter’s ‘Northern Lights’ Solar storms trigger Jupiter’s intense ‘Northern Lights’ by generating a new X-ray aurora that is eight times brighter than normal and ...

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The Wilds of the Local Group

The Wilds of the Local Group This scene, captured by ESO’s OmegaCAM on the VLT Survey Telescope, shows a lonely galaxy known as Wolf-Lundmark-Melotte, or WLM for short. Although considered part of our Local Group of dozens of galaxies, WLM ...

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A ‘Tail’ of Two Comets

Comet 252P/LINEAR will safely fly past Earth on March 21, 2016, at a range of about 3.3 million miles (5.2 million kilometers). The following day, comet P/2016 BA14 will safely fly by our planet at a distance of about 2.2 ...

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Hubble Unveils Monster Stars

The image shows the central region of the Tarantula Nebula in the Large Magellanic Cloud. The young and dense star cluster R136 can be seen at the lower right of the image. This cluster contains hundreds of young blue stars, ...

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La Silla Dawn Kisses the Milky Way

La Silla Dawn Kisses the Milky Way This picture was taken just before dawn at the La Silla Observatory, in outskirts of the Chilean Atacama Desert. A layer of orange hovering over the horizon announces the imminent arrival of the ...

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