Mars, like Earth, is a climate-fickle water planet. The main difference, of course, is that water on the frigid Red Planet is rarely liquid, preferring to spend almost all of its time traveling the world as a gas or churning up the surface as ice. That's the global picture literally and figuratively coming into much sharper focus as various Mars-orbiting cameras send back tomes of unprecedented super high-resolution imagery of ever vaster tracts of the planet's surface. picked by AutumnLotus 2 years ago tags Mars ice shaken stirred water planet red planet |
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Evidence suggests flowing water formed the rivers and gullies on the Mars surface, even though surface temperatures were below freezing. Dissolved minerals in liquid water may be the reason. picked by AutumnLotus 6 months ago 1 comments edit related share science |
The Mars Reconnaissance Orbiter has just begun its science mission, and one of the first targets is Victoria Crater, where the rover Opportunity has just arrived after nearly 1000 sols on Mars. 4 comments edit related share technologyThe photos, using the largest interplanetary telescope ever lofted, are truly amazing. See comments for links to original imagery. picked by Fanatic 3 years ago |
Mars will be closer to Earth this month than any time until the year 2016. The red planet is now the brightest "star" in the evening sky and is already above the horizon as evening twilight fades away. But give it at least two more hours – until about 8 p.m. – for it to climb above the poor atmospheric seeing that's near the horizon. By then, this brilliant yellow-orange worl... read full post picked by AutumnLotus 2 years ago 0 comments edit related share plime.com |
Water is present on Mars today, but it is entirely bound up in ice because the surface is too cold for liquid water. 1 comments edit related share scienceBut evidence has been mounting that shows water once flowed across the Martian surface, potentially supporting life. While water does not mean there was life, it's a key prerequisite. picked by AutumnLotus 9 months ago |
The longstanding mystery of how oceans once formed on Mars could be solved by fire and brimstone. Specifically, researchers now suggest that ancient volcanoes could have released brimstone — now more commonly known as sulfur — that warmed up the red planet enough for liquid water oceans in the early days of Mars. These findings might also shed insight on the young Earth, including the ... read full post picked by AutumnLotus 2 years ago 0 comments edit related share plime.com |
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Mars, the only planet whose surface we can see in any detail from the Earth, is now moving toward the best viewing position it will provide to us until the year 2014. Planet watchers have already begun readying their telescopes. picked by AutumnLotus 2 years ago 0 comments edit related share plime.com |
NASA's Phoenix lander may have captured the first images of liquid water on Mars - droplets that apparently splashed onto the spacecraft's leg during landing, according to some members of the Phoenix team. picked by AutumnLotus 9 months ago 3 comments edit related share science |
Although many dispute that the atmosphere can support the presence of liquid water, these photos make an interesting case for it! picked by BrownTrout 2 years ago 7 comments edit related share science |
A planet orbiting a red dwarf star 20 light years away could be the first known water world, entirely covered by a deep ocean. picked by suebe 7 months ago 4 comments edit related share plime.com |
They show in astonishing detail a network of giant valleys, vast plains and towering waterfalls carved into the surface of our neighbouring planet, millions of miles away. picked by deEPCHIll 1 year ago 2 comments edit related share science |
The most productive and longest-lived mission to Mars has likely ended, NASA says. For nearly ten years, the orbiter mapped the surface of Mars, and it played a big role in selecting the landing sites for the successful Mars Rover missions. A problem with a solar panel joint led to its demise. picked by Fanatic 3 years ago 0 comments edit related share technology |
Days before its tenth anniversary in Mars orbit, the Mars Global Surveyor spacecraft ran into problems. They got a weak signal three days later, and nothing since. Plans are to take a photograph of it with another Mars Orbiter today or tomorrow. picked by Fanatic 3 years ago 1 comments edit related share technology |
The hottest planet ever discovered is charcoal black and makes even some stars seem cool. Scientists think the exoplanet absorbs nearly all the starlight that reaches its surface and then reradiates it back out into space as heat. picked by AutumnLotus 3 years ago 0 comments edit related share plime.com |
Astronomers have discovered a planet, WASP-17, that is twice the size of Jupiter. That makes it the largest planet ever discovered. Unlike other planets, it orbits opposite to its star’s direction. 0 comments edit related share plime.comBut why is WASP-17 so big? The discovery suggests that have been subjected to intense tides as it traveled in its strange orbit, causing it to become stretched and bloated. picked by Bingo 4 months ago |
The new definition, proposed this week by the International Astronomical Union (IAU), basically says every round object orbiting the sun is a planet, unless it orbits another planet. Asteroid Ceres will become a planet. Pluto's moon Charon will become a planet, things could get really strange. picked by Jaxomlotus 3 years ago 0 comments edit related share science |
New images obtained by a sharp-eyed Martian satellite reveal that some Red Planet features once thought to have been carved by flowing water were in fact created by other processes. picked by AutumnLotus 2 years ago 0 comments edit related share plime.com |
A probable active glacier has been identified for the first time on Mars. The icy feature has been spotted in images from the European Space Agency's (Esa) Mars Express spacecraft. Ancient glaciers, many millions of years old, have been seen before on the Red Planet, but this one may only be several thousand years old. picked by AutumnLotus 2 years ago 2 comments edit related share plime.com |
Mars was covered in an ocean of molten rock for about 100 million years after the planet formed, researchers found. The formation of the solar system can be dated quite accurately to 4,567,000,000 years ago. Mars' metallic core formed a few million years after that. Previous estimates for how long the surface remained molten ranged from thousands of years to several hundred million years picked by AutumnLotus 2 years ago 0 comments edit related share plime.com |
Mars was wet in its early history, but today it appears bone dry other than ice below the surface and at the poles. Astronomers have long wondered where all the water went. The water might have been blown into space long ago by strong gusts of solar winds, new satellite observations suggest. picked by AutumnLotus 2 years ago 1 comments edit related share plime.com |
Mars may not be as dormant as scientists once thought. The 2004 discovery of methane means that either there is life on Mars, or that volcanic activity continues to generate heat below the martian surface. ESA plans to find out which it is. Either outcome is big news for a planet once thought to be biologically and geologically inactive. picked by kakana 4 months ago 1 comments edit related share science |