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Does life exist on other planets?

Researchers argue that oxygen-rich atmospheres are essential for complex life to exist. However, since levels of oxygen won't have had time to develop sufficiently before a sun dies, life may not be able to evolve on planets orbiting short-lived suns.

SourceUniversity of Bristol·JournalAstrobiology·DateJun 20, 2005

Study explains mystery of mars icecaps

Scientists from Oregon State University have discovered new theories about Mars' climate and polar regions, shedding light on the mystery of the planet's icecaps. The study reveals that the southern pole's permanent icecap is comprised primarily of carbon dioxide ice, which could indicate global climate change.

SourceOregon State University·JournalNature·DateMay 13, 2005

AGU Journal highlights - 14 April 2005

Researchers reassess Martian landslides using recent images and propose alternative gravity-driven explanation. Ocean color tracking reveals 50-year dataset for phytoplankton abundance estimation. Aerosol concentrations in China's atmosphere reduce daily surface solar radiation since 1961, according to Geophysical Research Letters papers.

SourceAmerican Geophysical Union·JournalGeophysical Research Letters·DateApr 14, 2005

NASA picks two IU devices to go to Mars

Indiana University geologists David Bish and Juergen Schieber will join NASA's Mars Science Laboratory, a rover mission set to launch in 2009. The rover will explore a local region as a potential habitat for past or present life, shedding light on the Martian surface's composition.

Not finding life? Dig deeper.

A team of Arizona scientists, led by Raina Maier, found microbial life in the Atacama Desert's core, which is one to two inches below the arid surface. The discovery contradicts a previous study that claimed the region was sterile, highlighting the importance of searching beyond the surface.

SourceUniversity of Arizona·JournalScience·DateNov 18, 2004

New signs of life found at the Poles

Researchers have found that rock-dwelling micro-organisms can photosynthesise and store carbon just as much as plants in the polar regions. The discovery suggests that even the most inhospitable places may harbor surprising habitats for life, including other planets like Mars.

SourceBritish Antarctic Survey·JournalNature·DateSep 22, 2004

AGU Journal Highlights - 8 September 2004

Researchers found that El Nino climate changes contribute to Antarctic cooling through atmospheric circulation shifts. Deep-sea islands stir and fertilize the upper ocean by mixing cold waters with the surface layer, while Siberian forest fires produced hazardous air pollution in western North America.

SourceAmerican Geophysical Union·JournalGeophysical Research Letters·DateSep 8, 2004

Earth has 'blueberries' like Mars

Researchers suggest Martian and Utah rocks formed underground when minerals precipitated from flowing groundwater, providing clues to the origin of 'blueberries' discovered on Mars. The study also sheds light on the search for evidence of past life on Mars.

SourceUniversity of Utah·JournalNature·DateJun 16, 2004

Students fashion space suits for Mars

Three undergraduate students at the University of Alberta designed a space suit for Mars that balances radiation protection, mobility, and cost efficiency. The suit incorporates new polymeric materials, such as Demron, and innovative designs like ball bearings and compression rings to address the unique challenges of Martian exploration.

SourceUniversity of Alberta·JournalJournal of Materials Engineering and Performance·DateMay 21, 2004

Martian mystery explained

Researchers found that heating and cooling alone can create spiral patterns on Mars, contrary to previous theories. The model suggests that differential melting and refreezing cause the spirals' unique shape and spacing.

SourceUniversity of Arizona·JournalGeology·DateMar 24, 2004

Mars on Earth?

A joint research effort discovered Mars-like soils in Chile's Atacama Desert, which are depleted in organic materials and would have been missed by NASA's Viking missions. The team found that the conditions in this environment represent a limit for microbial life on Earth.

SourceLouisiana State University·JournalScience·DateJan 13, 2004

Sand ripples taller on Mars

Ripple features on Mars have been found to be almost 20 feet high, much taller than those on Earth, with the exact heights and grain sizes still unknown. The dimensions of these Martian ripples are likely influenced by lower gravity and may reveal insights into local and regional weather patterns.

Green mineral indicates red planet is dry

The USGS has discovered a vast area of green mineral olivine on Mars, suggesting that the planet's surface has been dry and free from recent water activity. This finding is significant as it implies that the Martian surface has not experienced significant chemical weathering due to liquid water.

SourceU.S. Geological Survey·JournalScience·DateOct 23, 2003