spacer
 
Advanced Search
Astrobiology Magazine Facebook  Astrobiology Magazine Twitter
Terrestrial Climate
Viewed: 1868 times
01/17/09
Viewed: 1786 times
01/17/09
Viewed: 1817 times
01/17/09
Viewed: 2030 times
01/17/09
Viewed: 5621 times
01/17/09

Viewed: 6300 times
01/17/09
Viewed: 4953 times
01/17/09
This image shows annual mean surface temperatures in degrees Celsius at the time of the Permian extinction. It is based on a
computer simulation generated by the Community Climate System Model at NCAR.
Illustration Credit: Jeff Kiehl, NCAR
Viewed: 2169 times
01/17/09
Jeffrey Kiehl
Viewed: 1791 times
01/17/09
A Flood Glacier in the Boundary Ranges of the Coast Mountains, British Columbia. Credit: University of Michigan
Viewed: 1676 times
01/17/09

The Autonomous Benthic Explorer (ABE) will be one of two unmanned vehicles used to explore and map hydrothermal vents sites near Papua New Guinea. (Photo by Woods Hole Oceanographic Institution)
Viewed: 1823 times
01/17/09
A hydrothermal vent chimney on the East Pacific Rise in the eastern Pacific Ocean. Vents like these exist at mid-ocean ridges on the ocean floor around the world. (Photo by Woods Hole Oceanographic Institution)
Viewed: 2047 times
01/17/09
Earth's early atmosphere of nitrogen, methane and carbon dioxide was hostile to life as we know it, but friendly to the first methane-loving bacteria. Astronomers modeled the history of Earth's atmosphere to learn what fingerprints to seek on alien worlds. This artist's rendering shows Earth at 4 billion years ago, before continents had formed and while our planet still suffered bombardment from asteroids and comets left over from the solar system's formation. Credit: David A. Aguilar (CfA)
Viewed: 1867 times
01/17/09
Early Earth banner Credit: David A. Aguilar (CfA)
Viewed: 1596 times
01/17/09
Analysis of the shale led scientists to conclude significant temperature variations occurred during the Cretaceous Period. Credit: Simon Brassell
Viewed: 1630 times
01/17/09

IU Bloomington geochemist Simon Brassell (right), Penn State sedimentologist Michael Arthur (middle), and Tohoku Univ. sedimentologist Harumasa Kano (left) inspect an ancient shale aboard the JOIDES Resolution research vessel. Credit: Ocean Drilling Program
Viewed: 1946 times
01/17/09
View of Mittelstation and Davos, in Switzerland. Photo credit: Leslie Mullen
Viewed: 3187 times
01/17/09
A new book by Peter Ward suggests dinosaurs became dominant because they developed efficient respiratory systems. Credit: National Academies Press
Viewed: 1692 times
01/17/09
Graphic shows changes in the concentrations of cloud droplets over the Southern Ocean. Researchers believe emissions from phytoplankton are increasing cloudiness in the area.
Credit: Nenes/Meskhidze
Viewed: 1656 times
01/17/09
This true-color image from NASA´ Visible Earth project shows a phytoplankton bloom off South Georgia Island in January 2004. Researchers have discovered an apparent link between the blooms and increased cloud cover.
Image: NASA
Viewed: 1712 times
01/17/09

This true-color image from NASA´ Visible Earth project shows a phytoplankton bloom off South Georgia Island in January 2004. Researchers have discovered an apparent link between the blooms and increased cloud cover.
Image: NASA
Viewed: 1621 times
01/17/09
Cosmic radiation penetrating the atmosphere promotes the formation of clouds which have a cooling effect on Earth's climate.
Credit: Danish National Space Center
Viewed: 1460 times
01/17/09
One of the ocean bottom seismometers trapped in fresh lava on the East Pacific Rise. The flag on top is used to help locate the device when it surfaces. Photo courtesy of Woods Hole Oceanographic Institution, National Science Foundation and Ridge 2000
Viewed: 1657 times
01/17/09
When researchers went to retrieve 12 ocean bottom seismometers placed along the East Pacific rise to monitor for submarine eruptions, they found most of the instruments were trapped in fresh lava or unresponsive. Credit: Nicolle Rager-Fuller, NSF
Viewed: 1778 times
01/17/09
Earth
Viewed: 1489 times
01/17/09

Clouds
Viewed: 1442 times
01/17/09
Clouds
Viewed: 1643 times
01/17/09
A rock from a banded iron formation in northern Quebec, Canada.

Credit: University of Chicago
Viewed: 1553 times
01/17/09
Viewed: 1655 times
01/17/09
This map illustrates the horizontal surface motions of sites in Asia. Eric Calais, a Purdue associate professor of geophysics, used global positioning systems to measure the precise movements of hundreds of points on the continent to determine how they react to collisions of the underlying tectonic plates. Credit: Purdue graphic/Calais laboratory
Viewed: 3335 times
01/17/09

The familiar continents of Earth are embedded in tectonic plates on the planet's surface that slowly collide with each over time.
Viewed: 4716 times
01/17/09
Jiayong Wei, Payne´ colleague, examined a block of early Triassic microbial limestone.
Credit: Stanford University
Viewed: 1796 times
01/17/09
In south China, Jonathan Payne searched for clues to the recovery from a
250-year-old extinction event.
Credit: Stanford University
Viewed: 1529 times
01/17/09
A prototype Venus balloon in a JPL cleanroom.
Credit: NASA/JPL-Caltech
Viewed: 1595 times
01/17/09
Earth's biosignatures include methane, liquid water, and ozone. Image Credit: NASA PlanetQuest.
Viewed: 1516 times
01/17/09

A team of geochemists has new ideas about how gases are expelled from the Earth, and
their theories may change our understanding of how an atmosphere formed on Earth.
Credit: Rensselaer Polytechnic Institute
Viewed: 1567 times
01/17/09
Amplitude of the M2 tidal constituent (in centimetres) derived from the FES99 model. Cotidal lines indicating the phase every 30 degrees originate at amphidromic points where the tidal range is zero. Image Credit: Legos/CNRS
Viewed: 2322 times
01/17/09
The new findings resulted from studying a kilometer-long drill core dubbed the
'Hamersley core'. It was recovered as part of the Deep Time Drilling Project (DTDP)
of the Astrobiology Drilling Program (ADP) of the NASA Astrobiology Institute (NAI).
This project involves collaborators from Arizona State University, Harvard, MIT, U.
Maryland, U. C. Riverside and U. Washington as well as the Geological Survey of
Western Australia, Randolph Resources, Hamersley Iron, SIPA Resources International,
and the University of Western Australia.
Credit: Anbar Lab, Arizona State University
Viewed: 1486 times
01/17/09
The Hamersley core was acquired from a region in Western Australia. Click here for a
complete image of the region.
Credit: NASA Astrobiology Institute
Viewed: 1524 times
01/17/09
This balloon was able to carry a solar telescope to 120,000 Feet.
Credit: NCAR
Viewed: 1414 times
01/17/09

The latest rock cores examined for the study were collected from the state of Iowa
in upper Midwest of the United States, and from the state of Queensland in
Australia.
Viewed: 1440 times
01/17/09
ESA's Envisat spacecraft was launched in February of 2002 and continues
to help researchers understand Earth's atmosphere and climate.
Credit: ESA
Viewed: 1427 times
01/17/09
This image shows a polished face of the Mezö-Madaras meteorite from Romania - one
example of a common chondrite. The material that composes meteorites like
Mezö-Madaras is thought to be the same material that formed the planets of our Solar
System.
Credit: Arizona State University
Viewed: 1848 times
01/17/09
Diagram showing the exploration of subglacial Lake Ellsworth.
Credit: BAS
Viewed: 1525 times
01/17/09
The research team includes Dr. Dan Fitzgerald and Dr. John Woodward of the
University of Northumbria, Dr. Andy Smith of the British Antarctic Survey and Dr.
Neil Ross of University of Edinburgh.
Credit: BAS
Viewed: 1560 times
01/17/09

This image from a USGS field site in Nevada shows fractures in a rock that are
filled with silica and calcium carbonate. If scientists can determine whether or not
deposits like this have been precipitated by microbes, it might be one way to
identify signs of past life on other planets.
Photo credit: USGS
Viewed: 1518 times
01/17/09
Calcium carbonate is found in rocks all over the world. It can form with or without
microbes - but scientists have long wondered if there was a way to distinguish
between the calcium carbonate precipitated by microbes and that which forms through
non-biological means.
Credit: University of Texas
Viewed: 1623 times
01/17/09
The Toarcian occurred at the end of the early Jurassic Period, between 183 million years ago to 175 million years ago.
Credit: UC Berkeley
Viewed: 1494 times
01/17/09
The carbon cycle is one of the most important biogeochemical cycles on Earth. In any given year, tens of billions of tons of carbon move between the atmosphere, hydrosphere, and geosphere. The illustration above shows total amounts of stored carbon in black, and annual carbon fluxes in purple.
Credit: NASA/NASA Earth Science Enterprise
Viewed: 1499 times
01/17/09
Sometime between 180 and 120 million years ago, the great Pangaea landmass broke apart into two continents. Gondwana, the southern continent, consisted of Africa, South America, India, Madagascar, Australia and New Zealand. The northern continent, Laurasia, was composed of what are now North America, Europe, Asia and Greenland.
Viewed: 1317 times
01/17/09

Pages : 1 2 3 4 5 6 7   | Next   Last  
  Back to List of Albums



About Us
Contact Us
Links
Sitemap
Podcast Rss Feed
Daily News Story RSS Feed
Latest News Story RSS Feed
Learn more about RSS
Chief Editor & Executive Producer: Helen Matsos
Copyright © 2014, Astrobio.net