Tag Archives: early Mars

Mars: not as dry as it seems

When searching for life, scientists first look for an element key to sustaining it: fresh water. Although today’s Martian surface is barren, frozen and inhabitable, a trail of evidence points to a once warmer, wetter planet, where water flowed freely. … Continue reading

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Did bursts of methane warm early Mars?

The presence of water on ancient Mars is a paradox. There’s plenty of geographical evidence that rivers periodically flowed across the planet’s surface. Yet in the time period when these waters are supposed to have run — three to four … Continue reading

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Ancient Mars was icy and cold

The high seas of Mars may never have existed. According to a new study that looks at two opposite climate scenarios of early Mars, a cold and icy planet billions of years ago better explains water drainage and erosion features … Continue reading

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‘Early Mars’ topical website launched

The Lunar and Planetary Insitute in Houston has launched a new website on the subject of early Mars. It will provide links to new papers, conference programs and abstracts, field-trip guides, and more. The site’s introduction states, “The influx of … Continue reading

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Was nitrogen in the early Mars atmosphere a key to ancient habitability?

Scientists have long suspected that ancient Mars had a thicker atmosphere and temperatures warmer and far more habitable than at present. But modelers have difficulties making the numbers come out right,

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Mars’ explosive childhood

Mars is widely understood to be a volcanic planet — its surface shows abundant evidence of volcanic activity, both ancient and more recent. Spacecraft detect lava flows in many locations, and spectroscopic evidence of volcanic rocks lies almost everywhere. The … Continue reading

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