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Mars

665px-Mars_Hubble
Mars as seen from Hubble Credit: NASA ESA
Orbital period:
  687 days 188% Earth Year
Atmosphere:
  95% CO2, 3% N, 1.6% Ar, very thin 1% of Earth
Mass: 
  6.42*10^23kg 11% of Earth 
Equatorial diam: 
  6794km or 4222mi 53% of Earth
Surface gravity: 
  3.7m/s 38% of Earth  
Escape velocity: 
  5.0km/s or 3.1mi/s 45% of Earth
Surface temp:
  -220 F – 70 F 
Satellites (nat.): 
  2 Phobos and Deimos

Featured Mars posts:

NASA’s MAVEN Mission Finds Mars Has a Twisted Tail

NASA’s MAVEN Mission Finds Mars Has a Twisted Tail Mars has an invisible magnetic “tail” that is twisted by interaction ...
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Space Radiation Won’t Stop NASA’s Human Exploration

Space Radiation Won’t Stop NASA’s Human Exploration While it’s true that space radiation is one of the biggest challenges for ...
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What NASA’s simulated missions tell us about the need for Martian law

What NASA’s simulated missions tell us about the need for Martian law Off to court… D Mitriy/wikipedia, CC BY-SA Gbenga ...
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How we found our lost Mars lander after a decade of searching – and what’s next

How we found our lost Mars lander after a decade of searching – and what's next Images of the lost ...
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Mars Study Yields Clues to Possible Cradle of Life

Mars Study Yields Clues to Possible Cradle of Life The discovery of evidence for ancient sea-floor hydrothermal deposits on Mars ...
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Monster volcanoes on Mars: how space rocks are helping us solve their mysteries

Monster volcanoes on Mars: how space rocks are helping us solve their mysteries Olympus Mons, biggest volcano in the Solar ...
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Private companies are launching a new space race – here’s what to expect

Private companies are launching a new space race – here's what to expect satellite. Pixabay, CC BY-SA Monica Grady, The ...
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Another Chance to Put Your Name on Mars

Another Chance to Put Your Name on Mars When it lands on Mars in November of 2018, NASA's InSight lander ...
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Dear Elon Musk: Your dazzling Mars plan overlooks some big nontechnical hurdles

Dear Elon Musk: Your dazzling Mars plan overlooks some big nontechnical hurdles Will it be only a few decades before ...
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Dear diary: the Sun never set on the Arctic Mars simulation

Dear diary: the Sun never set on the Arctic Mars simulation Anastasiya (left) and myself working on the Haughton crater ...
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Revealed today, Elon Musk’s new space vision took us from Earth to Mars, and back home again

Revealed today, Elon Musk's new space vision took us from Earth to Mars, and back home again When will we ...
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Worries about spreading Earth microbes shouldn’t slow search for life on Mars

Worries about spreading Earth microbes shouldn't slow search for life on Mars The Viking landers in the 1970s were the ...
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A Fresh Look at Older Data Yields a Surprise Near the Martian Equator

A Fresh Look at Older Data Yields a Surprise Near the Martian Equator Scientists taking a new look at older ...
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Secret weapon for space travelers: A steady diet of TV?

Secret weapon for space travelers: A steady diet of TV? Deep-space journeys will have plenty of downtime. studiostoks/Shutterstock.com Jan Van ...
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Positive, Negative or Neutral, It All Matters: NASA Explains Space Radiation

Positive, Negative or Neutral, It All Matters: NASA Explains Space Radiation Charged particles may be small, but they matter to ...
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Seeds in space – how well can they survive harsh, non-Earth conditions?

Seeds in space – how well can they survive harsh, non-Earth conditions? Spend many months attached to the ISS and ...
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Ice mined on Mars could provide water for humans exploring space

Ice mined on Mars could provide water for humans exploring space There is water on Mars - but it’s buried, ...
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New Gravity Map Suggests Mars Has a Porous Crust

New Gravity Map Suggests Mars Has a Porous Crust NASA scientists have found evidence that Mars’ crust is not as ...
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NASA’s Next Mars Mission to Investigate Interior of Red Planet

NASA's Next Mars Mission to Investigate Interior of Red Planet Preparation of NASA's next spacecraft to Mars, InSight, has ramped ...
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NASA’s Webb Telescope Will Study Our Solar System’s “Ocean Worlds”

NASA’s Webb Telescope Will Study Our Solar System’s “Ocean Worlds” NASA’s James Webb Space Telescope will use its infrared capabilities ...
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There could be snow on Mars – here’s how that’s possible

There could be snow on Mars – here's how that's possible What Mars could have looked like during an ice ...
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Watch Martian Clouds Scoot, Thanks to NASA’s Curiosity

Watch Martian Clouds Scoot, Thanks to NASA's Curiosity Wispy, early-season clouds resembling Earth's ice-crystal cirrus clouds move across the Martian ...
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Five Years Ago and 154 Million Miles Away: Touchdown!

Five Years Ago and 154 Million Miles Away: Touchdown! NASA's Curiosity Mars rover, which landed near Mount Sharp five years ...
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Why looking for aliens is good for society (even if there aren’t any)

Why looking for aliens is good for society (even if there aren't any) Shutterstock Ian Crawford, UCL The search for ...
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Scientists find some of Mars’ youngest volcanoes – and discover they could have supported life

Scientists find some of Mars' youngest volcanoes – and discover they could have supported life 4000 km wide view of ...
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NASA’s Hubble Sees Martian Moon Orbiting the Red Planet

NASA’s Hubble Sees Martian Moon Orbiting the Red Planet The sharp eye of NASA's Hubble Space Telescope has captured the ...
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Humanity’s ‘sustainability’ is no excuse for abandoning planet Earth

Humanity's 'sustainability' is no excuse for abandoning planet Earth Stephen Allen, University of Hull “Spreading out into space will completely ...
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For Moratorium on Sending Commands to Mars, Blame the Sun

For Moratorium on Sending Commands to Mars, Blame the Sun This month, movements of the planets will put Mars almost ...
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How a Speck of Light Becomes an Asteroid

How a Speck of Light Becomes an Asteroid On the first day of the year 1801, Italian astronomer Gioacchino Giuseppe ...
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Space farms will feed astronauts and earthlings

Space farms will feed astronauts and earthlings Matt Damon as astronaut and exobotanist Mark Watney in the film The Martian ...
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Strict rules around contamination hamper exploration for life beyond Earth

Strict rules around contamination hamper exploration for life beyond Earth Artist’s impression of Cassini ending its life as a fireball ...
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Kennedy Scientists Developing Technology to Remove Martian Dust

Kennedy Scientists Developing Technology to Remove Martian Dust By Bob Granath NASA's Kennedy Space Center, Florida NASA's Journey to Mars ...
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Elon Musk releases details of plan to colonise Mars – here’s what a planetary expert thinks

Elon Musk releases details of plan to colonise Mars – here's what a planetary expert thinks Artist’s concept of the ...
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Why No One Under 20 Has Experienced a Day Without NASA at Mars

Why No One Under 20 Has Experienced a Day Without NASA at Mars As the Mars Pathfinder spacecraft approached its ...
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An unknown, unseen “planetary mass object” may lurk in the outer reaches of our solar system

An unknown, unseen "planetary mass object" may lurk in the outer reaches of our solar system An unknown, unseen "planetary ...
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1,000 Days in Orbit: MAVEN’s Top 10 Discoveries at Mars

1,000 Days in Orbit: MAVEN’s Top 10 Discoveries at Mars On June 17, NASA’s MAVEN (Mars Atmosphere and Volatile Evolution ...
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The new space race: why we need a human mission to Mars

The new space race: why we need a human mission to Mars A view from the ‘Kimberley’ formation on Mars ...
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How to backup life on Earth ahead of any doomsday event

How to backup life on Earth ahead of any doomsday event It’s happened before: why we need to plan for ...
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Dear diary: another day in the life on Mars

Dear diary: another day in the life on Mars Suited up to simulate the conditions of working outside on Mars ...
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NASA Finds Evidence of Diverse Environments in Curiosity Samples

NASA Finds Evidence of Diverse Environments in Curiosity Samples NASA scientists have found a wide diversity of minerals in the ...
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Mining the moon for rocket fuel to get us to Mars

Mining the moon for rocket fuel to get us to Mars Between the Earth and the moon: An artist’s rendering ...
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Five amazing ultrasound inventions set to change the world (and not a pregnancy scan in sight)

Five amazing ultrasound inventions set to change the world (and not a pregnancy scan in sight) Ultrasonic “tractor beam” Asier ...
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Seasonal Flows in Valles Marineris

Seasonal Flows in Valles Marineris Recurring slope lineae (RSL) are seasonal flows on warm slopes, and are especially common in ...
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NASA Rover Samples Active Linear Dune on Mars

NASA Rover Samples Active Linear Dune on Mars As it drives uphill from a band of rippled sand dunes, NASA's ...
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Japanese space agency’s mission aims to uncover how moons of Mars formed

Japanese space agency's mission aims to uncover how moons of Mars formed Elizabeth Tasker, Japan Aerospace Exploration Agency (JAXA) The ...
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Water, water, everywhere in our Solar system but what does that mean for life?

Water, water, everywhere in our Solar system but what does that mean for life? This illustration shows Cassini diving through ...
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New Look at 2004’s Martian Hole-in-One Site

New Look at 2004's Martian Hole-in-One Site A new observation from NASA's Mars Reconnaissance Orbiter (MRO) captures the landing platform ...
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NASA’s Mars Rover Opportunity Leaves ‘Tribulation’

NASA's Mars Rover Opportunity Leaves 'Tribulation' NASA's senior Mars rover, Opportunity, is departing "Cape Tribulation," a crater-rim segment it has ...
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Lakebeds in Holden Crater

Lakebeds in Holden Crater Holden Crater was once filled by at least two different lakes. The sediments deposited in those ...
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A Mesa in Noctis Labyrinthus

A Mesa in Noctis Labyrinthus This image from NASA's Mars Reconnaissance Orbiter shows a small (0.4 kilometer) mesa, one of ...
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NASA’s MAVEN Reveals Mars Has Metal in its Atmosphere

NASA's MAVEN Reveals Mars Has Metal in its Atmosphere Mars has electrically charged metal atoms (ions) high in its atmosphere, ...
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Ethiopia’s inhospitable Danakil Depression gives us clues about life on Mars

Ethiopia's inhospitable Danakil Depression gives us clues about life on Mars Hydrothermal pool in the Dallol hot springs, Danakil Depression ...
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NASA’s MAVEN Reveals Most of Mars’ Atmosphere Was Lost to Space

NASA's MAVEN Reveals Most of Mars' Atmosphere Was Lost to Space Solar wind and radiation are responsible for stripping the ...
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THE BIGGEST SPACE MISSION YOU’VE NEVER HEARD OF

THE BIGGEST SPACE MISSION YOU’VE NEVER HEARD OF An ambitious project to fly to Mercury is set to be tracked ...
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Mars Volcano, Earth’s Dinosaurs Went Extinct About the Same Time

Mars Volcano, Earth's Dinosaurs Went Extinct About the Same Time New NASA research reveals that the giant Martian volcano Arsia ...
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Extinction or survival: how storytellers explore the ethics of colonising other planets

Extinction or survival: how storytellers explore the ethics of colonising other planets Colonising other planets may be possible, but does ...
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Scientists Shortlist Three Landing Sites for Mars 2020

Scientists Shortlist Three Landing Sites for Mars 2020 Participants in a landing site workshop for NASA’s upcoming Mars 2020 mission ...
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NASA’s Curiosity Rover Sharpens Paradox of Ancient Mars

NASA's Curiosity Rover Sharpens Paradox of Ancient Mars Mars scientists are wrestling with a problem. Ample evidence says ancient Mars ...
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The Outer Space Treaty has been remarkably successful – but is it fit for the modern age?

The Outer Space Treaty has been remarkably successful – but is it fit for the modern age? Jill Stuart, London ...
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Fluctuating Forces of Flight Captured by New, High-Tech Paint

Fluctuating Forces of Flight Captured by New, High-Tech Paint As it thunders upward through the Earth’s atmosphere to carry a ...
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Similar-Looking Ridges on Mars Have Diverse Origins

Similar-Looking Ridges on Mars Have Diverse Origins Thin, blade-like walls, some as tall as a 16-story building, dominate a previously ...
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Bursts of methane may have warmed early Mars

Bursts of methane may have warmed early Mars Findings may help in search for life in the universe By Leah ...
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Mars Rover Curiosity Examines Possible Mud Cracks

Mars Rover Curiosity Examines Possible Mud Cracks Scientists used NASA's Curiosity Mars rover in recent weeks to examine slabs of ...
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Wind Tunnel Testing Underway for Next, More Powerful Version of NASA’s Space Launch System

Wind Tunnel Testing Underway for Next, More Powerful Version of NASA's Space Launch System As engines are fired, software written ...
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Small Troughs Growing on Mars May Become ‘Spiders’

Small Troughs Growing on Mars May Become 'Spiders' Erosion-carved troughs that grow and branch during multiple Martian years may be ...
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Is NASA going to Mars? Or the Moon? Or nowhere?

Is NASA going to Mars? Or the Moon? Or nowhere? ONCE MORE, LIFE ON MARS Let’s take a deep hopeful ...
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Mars Rock-Ingredient Stew Seen as Plus for Habitability

Mars Rock-Ingredient Stew Seen as Plus for Habitability NASA's Curiosity rover is climbing a layered Martian mountain and finding evidence ...
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Coldest Martian Landscape With Striking Resemblance To Earth

Coldest Martian Landscape With Striking Resemblance To Earth Many Martian landscapes contain features that are familiar to ones we find ...
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To Mars in 70 Days. Science Fiction or Fact?

To Mars in 70 Days. Science Fiction or Fact? After months of speculation and rumor, NASA has finally released its ...
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Curiosity Rover Team Examining New Drill Hiatus

Curiosity Rover Team Examining New Drill Hiatus NASA's Curiosity Mars rover is studying its surroundings and monitoring the environment, rather ...
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Climate cycles may explain how running water carved Mars’ surface features

Climate cycles may explain how running water carved Mars' surface features Dramatic climate cycles on early Mars, triggered by buildup ...
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First views of Mars show potential for ESA’s new orbiter

First views of Mars show potential for ESA’s new orbiter ESA’s new ExoMars orbiter has tested its suite of instruments ...
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NASA Radio on Europe’s New Mars Orbiter Aces Relay Test

NASA Radio on Europe's New Mars Orbiter Aces Relay Test Data from each of the two rovers active on Mars ...
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Mars Ice Deposit Holds as Much Water as Lake Superior

Mars Ice Deposit Holds as Much Water as Lake Superior Fast Facts: -- Water ice makes up half or more ...
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ESA’s new Mars orbiter prepares for first science

ESA’s new Mars orbiter prepares for first science The ExoMars orbiter is preparing to make its first scientific observations at ...
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Nili Fossae A Glimpse into History of Mars

Nili Fossae A Glimpse into History of Mars Nothing gets a geologist more excited than layered bedrock, except perhaps finding ...
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Mars’ ionosphere shaped by crustal magnetic fields

Mars' ionosphere shaped by crustal magnetic fields Scattered pockets of magnetism across the surface of Mars have a significant influence ...
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Curiosity Mars Rover Checks Odd-looking Iron Meteorite

Curiosity Mars Rover Checks Odd-looking Iron Meteorite Laser-zapping of a globular, golf-ball-size object on Mars by NASA's Curiosity rover confirms ...
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New Theory Explains How the Moon Got There

New Theory Explains How the Moon Got There Earth’s moon is an unusual object in our solar system, and now ...
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Camera on Mars Orbiter Shows Signs of Latest Mars Lander Schiaparelli

Camera on Mars Orbiter Shows Signs of Latest Mars Lander Schiaparelli NASA’s Mars Reconnaissance Orbiter has identified new markings on ...
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NASA’s MAVEN Mission Observes Ups and Downs of Water Escape from Mars

NASA's MAVEN Mission Observes Ups and Downs of Water Escape from Mars After investigating the upper atmosphere of the Red ...
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The Red Planet welcomes ExoMars

The Red Planet welcomes ExoMars Mars as seen by the webcam on ESA’s Mars Express orbiter on 16 October 2016, ...
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ExoMars arrives at the Red Planet

ExoMars arrives at the Red Planet The ExoMars 2016 mission will enter orbit around the Red Planet on 19 October ...
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Study Predicts Next Global Dust Storm on Mars

Study Predicts Next Global Dust Storm on Mars Global dust storms on Mars could soon become more predictable -- which ...
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Mars 2020 Lander Vision System Tested

Mars 2020 Lander Vision System Tested NASA tested new "eyes" for its next Mars rover mission on a rocket built ...
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NASA’S MAVEN Spacecraft Celebrates One Mars Year of Science

NASA’S MAVEN Spacecraft Celebrates One Mars Year of Science Today, NASA’s Mars Atmosphere and Volatile EvolutioN (MAVEN) mission completed one ...
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Some Ancient Mars Lakes Came Long After Others

Some Ancient Mars Lakes Came Long After Others Lakes and snowmelt-fed streams on Mars formed much later than previously thought ...
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Mars Rover Views Spectacular Layered Rock Formations

Mars Rover Views Spectacular Layered Rock Formations The layered geologic past of Mars is revealed in stunning detail in new ...
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NASA Approves 2018 Launch of Mars InSight Mission

NASA Approves 2018 Launch of Mars InSight Mission NASA is moving forward with a spring 2018 launch of its InSight ...
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NASA Awards Launch Services Contract for Mars 2020 Rover Mission

NASA has selected United Launch Services LLC of Centennial, Colorado, to provide launch services for a mission that will address ...
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Test for Damp Ground at Mars’ Seasonal Streaks Finds None

Seasonal dark streaks on Mars that have become one of the hottest topics in interplanetary research don't hold much water, ...
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Curiosity has disproved ‘old idea of Mars as a simple basaltic planet’

As NASA’s Mars Science Laboratory (MSL) celebrates four years on the Red Planet Leicester planetary scientist Professor John Bridges recounts ...
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Veins on Mars were formed by evaporating ancient lakes

Mineral veins found in Mars’s Gale Crater were formed by the evaporation of ancient Martian lakes, a new study has ...
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NASA Rover Game Released for Curiosity’s Anniversary

As Curiosity marks its fourth anniversary (in Earth years) since landing on Mars, the rover is working on collecting its ...
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Engine burn gives Mars mission a kick

Following a lengthy firing of its powerful engine this morning, ESA’s ExoMars Trace Gas Orbiter is on track to arrive ...
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Traveling to Mars with powerful and immortal plasma rockets

Nearly 50 years after landing on the moon, mankind has now set its sights on sending the first humans to ...
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Mars Gullies Currently Not Likely Formed by Liquid Water

New findings using data from NASA's Mars Reconnaissance Orbiter show that gullies on modern Mars are likely not being formed ...
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Digging deeper into Mars

Water is the key to life on Earth. Scientists continue to unravel the mystery of life on Mars by investigating ...
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NASA Selects Five Mars Orbiter Concept Studies

NASA's Mars Exploration Program includes two active rovers and three active orbiters. Concept studies have begun for a potential future ...
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Curiosity Rover Findings Point to a More Earth-like Martian Past

Chemicals found in Martian rocks by NASA's Curiosity Mars rover suggest the Red Planet once had more oxygen in its ...
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NASA Scientists Discover Unexpected Mineral Tridymite on Mars

Scientists have discovered an unexpected mineral in a rock sample at Gale Crater on Mars, a finding that may alter ...
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ExoMars sets sights on the Red Planet

ExoMars captured its first images of Mars this week as part of its preparations for arriving at the Red Planet ...
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NASA Mars Rover Descends Plateau, Turns Toward Mountain

NASA's Curiosity Mars rover has analyzed its 12th drilled sample of Mars. This sample came from mudstone bedrock, which the ...
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NASA Mars Orbiters Reveal Seasonal Dust Storm Pattern

After decades of research to discern seasonal patterns in Martian dust storms from images showing the dust, but the clearest ...
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Hubble Takes Mars Portrait Near Close Approach

On May 12, 2016, astronomers using NASA's Hubble Space Telescope captured this striking image of Mars, when the planet was ...
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Mars Mission By 2018 Congress wants NASA To Build Deep Space Habitat

http://gty.im/521148485 Mars Mission By 2018 Congress wants NASA To Build Deep Space Habitat. Congress announced it would increase the space ...
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NASA Confirms Flowing Water On Mars!

NASA Confirms Flowing Water On Mars! Nasa researchers confirm salty briny water. Flows during the summer season of Mars. Giving rise ...
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NASA MAVEN: Solar Winds Strip Away Mars Upper Atmosphere

NASA MAVEN: Solar Winds Strip Away Mars Upper Atmosphere. Mars Atmosphere and Volatile Evolution mission - MAVEN Solar winds stripped ...
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Did Mars undergo a mass extinction event?

Did Mars undergo a mass extinction event? Maybe not unlike what we here on Earth are going through now. According to ...
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