Current Events

  • Kansas Legislator Proposes Bill to Outlaw Sustainability Education
    A bill has been introduced in the Kansas legislature this week that would prohibit the promotion of ...Read more

    x

    Kansas Legislator Proposes Bill to Outlaw Sustainability Education

    A bill has been introduced in the Kansas legislature this week that would prohibit the promotion of sustainability. Here is a link to the one-page bill: http://www.kslegislature.org/li/b2013_14/measures/documents/hb2366_00_0000.pdf. See report on Bloomberg News.
  • Earth's Center Is 1,000 Degrees Hotter Than Previously Thought, Synchrotron X-Ray Experiment Shows
    Scientists have determined the temperature near the Earth’s center to be 6000 degrees Celsius, 1000 ...Read more

    x

    Earth's Center Is 1,000 Degrees Hotter Than Previously Thought, Synchrotron X-Ray Experiment Shows

    Scientists have determined the temperature near the Earth’s center to be 6000 degrees Celsius, 1000 degrees hotter than in a previous experiment run 20 years ago. These measurements confirm geophysical models that the temperature difference between the solid core and the mantle above, must be at least 1500 degrees to explain why the Earth has a magnetic field. For more information about this study, see the press release from the European Synchrotron Radiation Facility.
  • Ocean Volcanic Rocks Contain Samples of Recycled Crust
    Scientists have long believed that lava erupted from certain oceanic volcanoes contains materials fr...Read more

    x

    Ocean Volcanic Rocks Contain Samples of Recycled Crust

    Scientists have long believed that lava erupted from certain oceanic volcanoes contains materials from the early Earth’s crust. But decisive evidence for this phenomenon has proven elusive. New research from a team including Carnegie’s Erik Hauri demonstrates that oceanic volcanic rocks contain samples of recycled crust dating back to the Archean era 2.5 billion years ago. Their work is published in Nature. Oceanic crust sinks into the Earth’s mantle at so-called subduction zones, where two plates come together. Much of what happens to the crust during this journey is unknown. Model-dependent studies for how long subducted material can exist in the mantle are uncertain and evidence of very old crust returning to Earth’s surface via upwellings of magma has not been found until now. For more information about these results, see the press release from the Carnegie Institution.
This artist's concept of the Phoenix lander shows the spacecraft during the final stages of its descent to the Martian surface on May 25, 2008. After parachutes slow Phoenix during its plunge through the thin Martian air, retrorockets will take over during the final stages of the landing.
Click on image for full size
Image courtesy of NASA/JPL-Calech/University of Arizona.

Phoenix Mars Lander

The Phoenix Mars Lander is a space mission sent by NASA to the North Polar Region of Mars. Phoenix is searching for and analyzing water ice that scientists believe exists just below the surface of Mars at high northern latitudes. Since water is crucial for the existence of life as we know it, this search for water ice has important implications for the possibility of life on Mars.

Phoenix was launched aboard a Delta rocket from Cape Canaveral in Florida on August 4, 2007. After a 9-month cruise to the Red Planet, Phoenix landed on the northern plains of Mars near the polar ice cap on May 25, 2008. NASA hopes the lander will function for at least 90 sols (Martian days; just over 92 Earth days). The lander uses solar panels to generate electricity, so the onset of winter in the Martian northern hemisphere will eventually deprive the lander of sunlight, ending the mission.

Click here to learn about the instruments onboard the spacecraft and the objectives of the Phoenix mission.

The landing site on Mars is located at 233° East longitude by 68.35° North latitude, a comparable latitude to northern Alaska on Earth. Although diminishing winter sunlight will almost certainly "kill" the lander by preventing it from drawing power from its solar panels, mission scientists hope Phoenix will survive long enough to observe the buildup of ice in its surroundings as the Martian winter sets in. They believe that as much as one meter (3 feet) of dry ice could accumulate in the vicinity of Phoenix, possibly burying the lander under a thick blanket of frozen carbon dioxide!

Phoenix Instruments and Mission Objectives

Animation depicting Phoenix mission (small 3 Mb | large 31 Mb)

Location of Phoenix landing site on Mars

Map of water ice near the Martian North Pole

Last modified May 27, 2008 by Randy Russell.

Shop Windows to the Universe Science Store!

Our online store includes books on science education, ranging from evolution, classroom research, and the need for science and math literacy!

Windows to the Universe Community

News

Opportunities

You might also be interested in:

Traveling Nitrogen Classroom Activity Kit

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

The Cryosphere

The cryosphere includes the parts of the Earth system where water is in its frozen (solid) form. This includes snow, sea ice, icebergs, ice shelves, glaciers, ice sheets, and permafrost soils. Approximately...more

The Four Seasons

The Earth travels around the sun one full time per year. During this year, the seasons change depending on the amount of sunlight reaching the surface and the Earth's tilt as it revolves around the sun....more

Phoenix Mars Lander - Instruments and Mission Objectives

The Phoenix Mars Lander is a space mission sent by NASA to the North Polar Region of Mars. This page describes the instruments aboard the spacecraft and the mission objectives for Phoenix. Click here to...more

Carbon Dioxide - CO2

Carbon dioxide is a colorless and non-flammable gas at normal temperature and pressure. Although much less abundant than nitrogen and oxygen in Earth's atmosphere, carbon dioxide is an important constituent...more

Hubble Space Telescope

The Hubble Space Telescope (HST) was one of the most important exploration tools of the past two decades, and will continue to serve as a great resource well into the new millennium. The HST is credited...more

Apollo 11

Driven by a recent surge in space research, the Apollo program hoped to add to the accomplishments of the Lunar Orbiter and Surveyor missions of the late 1960's. Apollo 11 was the first mission to succeed...more

Apollo 12

Apollo 12 survived a lightning strike during its launch on Nov. 14, 1969, and arrived at the Moon three days later. Astronauts Charles Conrad and Alan Bean descended to the surface, while Richard Gordon...more

Shop Windows to the Universe

The Winter 2010 issue of The Earth Scientist includes a variety of educational resources, ranging from astronomy to glaciers. Check out the other publications and classroom materials in our online store.

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF