Labs assigned to an underfunded S. Labs Outpost 72 in the Arctic Circle, where the deceased researcher Dr. Louise Lincoln had been working on a Self-Sustaining Thermodynamic Ultraconductor Engine that could subvert the second law of thermodynamics in order to create perpetual motion. Caitlin became interested in continuing Lincoln's work, in spite of her colleagues warning her against it.
Take the weather, for instance.
But does it snow? Might settlers on Mars be able to see the red planet turn white? A new study surprisingly suggests so.
Get the latest music news, watch video clips from music shows, events, and exclusive performances from your favorite artists. Discover new music on MTV. At such cold temperatures, it does snow on Mars – NASA’s Phoenix Mars Lander detected snow falling from the Martian clouds back in September However, before the snow had a chance to reach the ground, it vaporised into streaks called virgae. Even more-recent studies with the Mars. Here Are Photos of Snow on Mars. New research suggests that ancient Mars was carved, in part, by rain and snow. In honor of that finding -- and to remind you that there is, indeed, snow on.
Mars is clearly cold enough for snow. It has ice — the amount of which has varied significantly over time. When its axis is tilted at only a small angle relative to its orbit, its surface is ice-free except for the polar caps.
Mars emerged from its most recent ice age aboutyears ago. Since then, its polar caps have been small, and any ice surviving near the equator has been buried under dust.
Although it is still possible for clouds to form at an altitude of several kilometres, until now it has been generally believed A discussion on snow on mars any true snowfall would not reach the ground. Being only a few micrometres in size, ice particles falling from the clouds would would drop at about only a centimetre a second.
This allows more than enough time for them to evaporate before reaching the ground strictly speaking, the process should be called "sublimation", because the ice goes directly to vapour, without melting first. Overnight and seasonal frost spotted on Mars have been explained by water-ice particles falling quickly because they had been made temporarily larger and heavier by an outer coating of frozen carbon dioxide from the atmosphere.
The new study, published in Nature Geosciencehas found a way in which tiny specks of water-ice could travel down to the ground without this strange frozen carbon dioxide coat. If correct, this would mean genuine snow on Mars — just like that on Earth.
The team used measurements from two orbiting spacecraft the Mars Global Surveyor and Mars Reconnaissance Orbiter to study how temperature varies with height in the martian atmosphere.
They found that at night, the lower atmosphere below ice clouds can become unstable, because it becomes less dense below than above. Shots by the Curiosity rover of cirrus clouds made of tiny crystals of water-ice on Mars. This leads to rapid downdrafts of air, travelling at about 10 metres per second, which could carry ice crystals to the surface too quickly for them to "evaporate".
However, the snow layer would probably be thin and not last too long before it sublimes back into the atmosphere — where it could form new clouds and snowfall.
The phenomenon is similar to what is known on Earth a "microburst", when a localised 60mph 97km per hour downdraft below a thunderstorm can be powerful enough to flatten trees.
The same process can also be responsible for intense snowfall at a particular location, by carrying snowflakes groundward in a blast, punching through the near-surface layer of air that would normally be warm enough to melt them.
Seasonal frost or snowfall? This view is about metres wide. It used a LIDAR like radar but relying on reflections from a laser beam to probe the atmosphere, and on at least two nights observed curtains of falling snow hanging below the cloud layer.
If a downdraft powerful enough had occurred, then maybe one morning Phoenix would have woken up to a winter wonderland, instead of the usual red landscape — at least for a few hours.
Frost or a light dusting of snow seen at the Viking 2 lander site, Utopia Planitia, Mars.Site Feedback Discussion about this site, its organization, how it works, and how we can improve it.
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There could be snow on Mars – here's how that's possible August 22, by David Rothery, The Conversation What Mars could have looked like . Massive, deep deposits of ice found on Mars. an avalanche of dusty snow racing down the weakened side of an eroded slope on Mars.
In this image, the snow is made up of dry ice (frozen carbon. Get the latest music news, watch video clips from music shows, events, and exclusive performances from your favorite artists. Discover new music on MTV. What is the Weather like on Mars?
Here’s Mars Compared to Earth, It Only Happens on Mars: Carbon Dioxide Snow is Falling on the Red Planet, Snow is Falling from Martian Clouds, Surprise!