Tag Archives: MARSIS

Radar shows thick, porous sediments & no ground ice under Meridiani Planum

New findings reveal deposits on Mars that could be interpreted to be ice-rich may contain little or no ice at all, based on an analysis of radar sounder data for Meridiani Planum — an area on the planet’s equator being … Continue reading

Posted in Reports | Tagged , , , , , | Comments Off

Mars ionosphere shaped by crustal magnetic fields

Scattered pockets of magnetism across the surface of Mars have a significant influence on the planet’s upper atmosphere, according to observations from ESA’s Mars Express. Understanding these effects may be crucial for ensuring safe radio communications between Mars and Earth … Continue reading

Posted in Reports | Tagged , , , , , , , , , , , | Comments Off

Comet Siding Spring’s effects on Mars 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 … Continue reading

Posted in Reports | Tagged , , , , , , , , , , , , , , , , , | Comments Off

NASA telecon to discuss Mars comet findings

NASA will host a media teleconference at 9 a.m. PST (noon EST) on Friday, Nov. 7, to provide initial science observations of comet C/2013 A1 Siding Spring’s close flyby of Mars and the impact on the Martian atmosphere. Briefing participants … Continue reading

Posted in Reports | Tagged , , , , , , , , , , , , , | Comments Off

Radar measures thickness of Meridiani Planum sedimentary units

Landed upon and explored by the Opportunity rover, the rocks of Meridiani Planum have been intensively studied, both from orbit and from ground level. Now scientists in a team led by Thomas Watters (Smithsonian Institution) have used the MARSIS ground-penetrating … Continue reading

Posted in Reports | Tagged , , , , | Comments Off

Hidden valley at the north pole

The north polar cap of Mars has a wide, deep trough called Chasma Boreale that slices into the polar cap for 560 kilometers (350 miles). The floor of the chasma exposes a layer of sand and dust cemented with water … Continue reading

Posted in Reports | Tagged , , , , , , , , | Comments Off

MARSIS detects “Oceanus Borealis” sediments

The ground-penetrating radar instrument MARSIS on the Mars Express orbiter has measured the electrical properties of the north and south polar regions. The results, reported in Geophysical Research Letters by Jérémie Mouginot (University of California, Irvine) and colleagues, strongly support … Continue reading

Posted in Reports | Tagged , , , , , , | 3 Comments