Curious Mars

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Mars: Hellas Basin Chaos

© ESA/DLR/FU Berlin

Mars: Hellas Basin Chaos

Hellas Chaos, in the southern central part of the giant Hellas basin, stretches roughly 200 km north-south and for about 500 km in an east-west direction.


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Mars, Like Earth, Has Macroweather

© NASA

Mars

Weather, which changes day-to-day due to constant fluctuations in the atmosphere, and climate, which varies over decades, are familiar.

Mars Spacecraft Reveal Comet Flyby Effects on Martian Atmosphere

Mars Spacecraft Reveal Comet Flyby Effects on Martian Atmosphere

Two NASA and one European spacecraft that obtained the first up-close observations of a comet flyby of Mars on Oct. 19, have gathered new information about the basic properties of the comet's nucleus and directly detected the effects on the Martian atmosphere.


Curiosity Finds Mineral Match With Orbital Data

Curiosity Finds Mineral Match With Orbital Data

Reddish rock powder from the first hole drilled into a Martian mountain by NASA's Curiosity rover has yielded the mission's first confirmation of a mineral mapped from orbit.


Chaos in Atlantis Basin on Mars

Chaos in Atlantis Basin on Mars

Mars is peppered with craters. Scientists have deduced that the red planet is struck by around 200 meteoroids every year that dig out new craters.


Comet Siding Spring Seen Next to Mars

Comet Siding Spring Seen Next to Mars

This composite NASA Hubble Space Telescope Image captures the positions of comet Siding Spring and Mars in a never-before-seen close passage of a comet by the Red Planet, which happened at 2:28 p.m. EDT October 19, 2014. The comet passed by Mars at approximately 87,000 miles (about one-third of the distance between Earth and the Moon). At that time, the comet and Mars were approximately 149 million miles from Earth.


Increasing Cosmic Radiation May Boost Danger For Human Mars Missions

Increasing Cosmic Radiation May Boost Danger For Human Mars Missions

Humans have long dreamed of traveling to Mars, hopscotching across the solar system and fanning out into the cosmos beyond.


Opportunity Views Comet Near Mars

Opportunity Views Comet Near Mars

Mars Exploration Rover Opportunity captured images of a comet passing much closer to Mars than any previous known comet flyby of Earth or Mars. The images of comet Siding Spring were taken against a backdrop of the pre-dawn Martian sky on Sunday (Oct. 19).


All Three NASA Mars Orbiters Healthy After Comet Flyby

All Three NASA Mars Orbiters Healthy After Comet Flyby

All three NASA orbiters around Mars confirmed their healthy status Sunday after each took shelter behind Mars during a period of risk from dust released by a passing comet.


Comet Siding Spring Close Encounter with Mars Q & A

Comet Siding Spring Close Encounter with Mars Q & A Video in Story

Jared Espley and Michelle Thaller talk about the close encounter between Mars and Comet Siding Spring at the Oct 17, 2014.


MAVEN Provides Its First Look at the Upper Atmosphere of Mars

MAVEN Provides Its First Look at the Upper Atmosphere of Mars

NASA's Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft has provided scientists their first look at a storm of energetic solar particles at Mars.


The Look of a Young Mars

The Look of a Young Mars

This artist's concept depicts the early Martian environment (left) - believed to contain liquid water and a thicker atmosphere - versus the cold, dry environment seen at Mars today (right).


NASA News Briefing on Comet Siding Spring Close Encounter With Mars

NASA News Briefing on Comet Siding Spring Close Encounter With Mars Video in Story

During an October 9 press briefing at NASA headquarters, panelists discussed the Earth and space-based assets that will be in position to observe the October 19 flyby of Mars by comet C/2013 A1, also known as comet Siding Spring. These assets include NASA's iconic Hubble Space Telescope and spacecraft orbiting and roving Mars.


ScienceCasts: First Light for MAVEN

ScienceCasts: First Light for MAVEN Video in Story

NASA's MAVEN spacecraft has reached Mars and it is beaming back "First Light" images of the Red Planet's upper atmosphere. The data could help researchers understand what transformed Mars from a hospitable planet billions of years ago into a desiccated wasteland today.


New Image From Mars Orbiter

New Image From Mars Orbiter

Full disc image of Mars taken by Mars Orbiter's Color Camera, from an altitude of 66,543 km. The dark region towards south of the cloud formation is Elysium. Larger image


Four Candidate Landing Sites for ExoMars 2018

Four Candidate Landing Sites for ExoMars 2018

Four possible landing sites are being considered for the ExoMars mission in 2018. Its rover will search for evidence of martian life, past or present.


India's Mars Orbiter Image of Martian Dust Storms

India's Mars Orbiter Image of Martian Dust Storms

Regional dust storm activities over Northern Hemisphere of Mars - captured by Mars Color Camera on-board Mars Orbiter Spacecraft from altitude of 74500 km on Sep 28, 2014 High resolution image.


MAVEN Returns First Mars Observations

MAVEN Returns First Mars Observations

NASA's Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft has obtained its first observations of the extended upper atmosphere surrounding Mars.



More top stories from November.