Curiosity’s View Into Marias Pass

The image above shows Curiosity’s view southwest into “Marias Pass,” a low valley in Gale Crater where the rover was on May 22, 2015 – mission Sol 992. At the left (east) edge is the western slope of a rise called Akipuni Mountain, and Mount Shields rises off to the right (west). The image is a…

Surprise: it can snow on Venus! (But it’s made of metal.)

Our neighboring planet Venus is pretty badass. Sulfuric acid-laden clouds, crushing atmospheric pressure, and broiling surface temperatures soaring to nearly 900 degrees Fahrenheit (480 degrees Celsius) make Earth’s “sister” world quite the alien horror show. And now there may be another strange phenomenon to add to Venus’ list of extreme oddities: heavy metal ferroelectric “snow”…

What’s Ahead for Cassini?

If you’ve been a faithful reader of Lights in the Dark over the past five years you know that I just love Cassini (and you probably do too!) In orbit around Saturn since 2004, Cassini has taken us on an intimate tour of the Saturnian system for a decade now, revealing the incredible beauty of the…

Solving a Martian Mystery

“The Red Planet bleeds. Not blood, but its atmosphere, slowly trickling away to space. The culprit is our sun, which is using its own breath, the solar wind, and its radiation to rob Mars of its air. The crime may have condemned the planet’s surface, once apparently promising for life, to a cold and sterile…

Follow the Dotted Line

A dotted line marks the path of a large boulder that has bounced down the inner slope of this 1-km-wide crater in this image from the HiRISE camera, taken on November 12, 2006. The boulder can be seen where it came to rest among the sand dunes on the crater’s floor. See the original release…