Science

Tags:

NASA Mars Curiosity Rover: Two Years and Counting on Red Planet

pia18590-640_0.jpg
This image from the Navigation Camera on NASA's Curiosity Mars rover shows wheel tracks printed by the rover as it drove on the sandy floor of a lowland called "Hidden Valley" on the route toward Mount Sharp.

Tags:

Study of Aerosols Stands to Improve Climate Models

earth20140805-640_0.jpg
Low-level clouds along the California coast are visible in this July 26, 2014 image from the NOAA/NASA Geostationary Operational Environmental Satellite (GOES)-15 satellite. A new NASA/Caltech study examines how changes in aerosol levels affect this key type of cloud that helps cool our planet.

Tags:

World Bank Group Commits US$ 5 Billion to Boost Electricity Generation in Six African Countries

The World Bank Group committed $5 billion in new technical and financial support for energy projects in six African countries-- Ethiopia, Ghana, Kenya, Liberia, Nigeria, and Tanzania—which have partnered with President Obama’s Power Africa initiative.

Tags:

Rosetta's Comet: Imaging the Coma

pia18423-640_0.jpg
The nucleus of comet 67P/Churyumov-Gerasimernko as seen by Rosetta's OSIRIS instrument from a distance of 1,210 miles (1,950 kilometers) on July 29, 2014.

Tags:

Mars 2020 Rover's PIXL to Focus X-Rays on Tiny Targets

pia18405-640_0.jpg
This diagram shows components of the investigations payload for NASA's Mars 2020 rover mission.

Tags:

Scientists Measure Medical Species Simultaneously Using Statistical Methods

Iranian researchers from Kashan University designed a nanosensor with low detection limit for the simultaneous measurement of medical species.

49922_0.jpg

Tags:

Scientists Determine Fluctuations Caused by Temperature on Graphene Surface

Iranian researchers from Shahid Rajayee Teacher Training University in association with foreign researchers succeeded in the measurement of thermal fluctuations created on the surface of graphene.

49923_0.jpg

Tags:

Graphene surfaces on photonic racetracks

Graphene could enable new kind of photonics-based chemical sensors and photo-detectors, University of Manchester researchers have shown.

49916_0.jpg
Graphene biochemical sensors could become reality

Tags:

NASA Mars Rover Curiosity Nears Mountain-Base Outcrop

pia18409-640_0.jpg
This full-circle panorama of the landscape surrounding NASA's Curiosity Mars rover on July 31, 2014, offers a view into sandy lower terrain called "Hidden Valley," which is on the planned route ahead. It combines several images from Curiosity's Navigation Camera. South is at the center.

Tags:

Light pulses control graphene's electrical behavior: Finding could allow ultrafast switching of conduction, and possibly lead to new broadband light sensors

Light pulses control graphene's electrical behavior: Finding could allow ultrafast switching of conduction, and possibly lead to new broadband light sensors

49912.jpg
Researchers at MIT have found a way to control how graphene conducts electricity by using extremely short light pulses. In this illustration, a lattice of graphene is shown with its bonds (bars) connecting carbon atoms (balls). When the light pulse hits the atoms, electrons can accumulate or diminish in number. By controlling the concentration of electrons in a graphene sheet, researchers can change the material's electrical conductivity.