Flood lavas on Earth, Io and Mars

Glassy Subaqueous Lavas as a Habitat for Life on Earth, Mars, and Elsewhere?

Introduction: Numerous studies over the past decade have demonstrated that microbial life rapidly colonizes terrestrial subaqueous volcanic glass [1-5]. Evidence for microbial alteration of terrestrial subaqueous volcanic rocks has been reported from modern ocean crust, ophiolites, and Archean greenstone belts [1-5]. Microbial alteration structures with characteristic granular and tubular morph...

Paleoflooding in the Solar System: comparison among mechanisms for flood generation on Earth, Mars, and Titan

Conditions allow surficial liquid flow on three bodies in the Solar System, Earth, Mars, and Titan. Evidence for surficial liquid flood flow has been observed on Earth and Mars. The mechanisms for generating flood flow vary according to the surficial conditions on each body. The most common flood-generating mechanism on Earth is wide-spread glaciation, which requires an atmospheric cycle of a v...

Sand Dunes on Mars and on Earth

Simultaneous ionospheric variability on Earth and Mars

[1] Ionospheric physics deals with the basic structure and variability of plasma within the upper atmospheres of the Earth and planets. Comparative studies foster both exploration and synthesis within diverse settings. In this paper we examine observations of the ionospheric profiles on Mars obtained on 9–27 March 1999 by the radio science experiment onboard the Mars Global Surveyor satellite, ...

Crater Fields on Venus , Earth and Mars

Introduction: Meteoroids that are disrupted and dispersed in the atmosphere may give rise to crater fields at the surface. For lower mass objects fragmentation may produce a strewn field of meteorite fragments, and then (with increasing mass) meteorites plus impact pits; small meterto tens m-sized well separated craters; craters whose rims overlap; and finally single craters produced by a swarm...