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It’s ‘full spin ahead’ for NASA soil moisture mapper
SMAP will produce global maps of soil moisture, which will help improve our understanding of Earth's water and carbon cycles and our ability to manage water resources. Credit: NASA/JPL-Caltech Enlarge...
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What happens at the poles does not stay at the poles
Over the past 30 years, the Arctic has warmed more than any other region on the Earth. In fact, Arctic air temperatures have been increasing twice as much as the global average. Arctic warming is...
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How can dark matter cause chaos on Earth every 30 million years?
Are you afraid of the dark matter? Credit: European Southern Observatory, CC BY Enlarge In 1980, Walter Alvarez and his group at the University of California, Berkeley, discovered a thin layer of clay...
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The pale blue dot and other ‘selfies’ of Earth
Pale Blue Dot – Earth, imaged by Voyager 1 from 6 billion kilometres away. NASA. Twenty-five years ago a set of images were taken that provided a unique view of Earth and helped highlight the...
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Expedition will sample crater left by dinosaur-killing asteroid
Artist's impression of the Chicxulub asteroid impacting the Yucatan Peninsula as pterodactyls fly in the sky above. Painting by Donald E. Davis. Credit: NASA An international research team is...
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Top 8 Earth Images for 2015
Each year, NASA's Earth Observatory runs its own March Madness contest at the same time as the basketball tourney, pitting the year's best Earth images against each other in a online contest. Here are...
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The TRMM rainfall mission comes to an end after 17 years
TRMM observes the 3-D rain structure of Hurricane Katrina on Aug. 28, 2005, including the red spikes known as hot towers that appear where the storm is most intense. The center tower is located on the...
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Will asteroid 2012 TC4 hit Earth in October 2017?
On Oct. 12, 2017, the asteroid 2012 TC4 is slated to whizz by Earth dangerously close. The exact distance of its closest approach is uncertain, as well as its size. Based on observations in October...
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Meteorites key to the story of Earth’s layers
Credit: NASA A new analysis of the chemical make-up of meteorites has helped scientists work out when the Earth formed its layers. The research by an international team of scientists confirmed the...
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Scientists hope Venus will give up the secret of how life evolved on Earth
Venus – a planet that could hold the key to life itself. Photograph: Elvele Images /Alamy Enlarge Venus has a special place in the sun’s family of planets. It is the solar system’s most inhospitable...
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Earth’s Mysterious Hum Explained
ENLARGE / A view of Earth from above created from images snapped by the Suomi-NPP satellite. Credit: Image by Norman Kuring, NASA/GSFC/Suomi NPP. Caption by Michael Carlowicz. Suomi NPP is the result...
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Early Earth May Have Absorbed Mercury-like Object
ENLARGE / The early Earth absorbed a planetary body similar to Mercury (seen here in a NASA photo from the MESSENGER spacecraft), according to a new study in Nature released on April 15, 2015. The...
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‘PLANETARY’ Documentary Gives Astronaut’s-Eye View of Fragile Earth
The new film "PLANETARY," which comes out April 22, urges viewers to take an astronaut's-eye view of their home planet. Credit: Planetary Collective Enlarge Fifteen years ago, a teenage Guy Reid was...
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Exploding stars help to understand thunderclouds on Earth
This shows a particle shower initiated by a cosmic ray reaches LOFAR through a thundercloud. Credit: Radboud University Enlarge How is lightning initiated in thunderclouds? This is difficult to answer...
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Millimeter-sized stones formed our planet
Asteroids were formed by capturing chondrules with the help of gravitational force. Credit: NASA/JPL-Caltech Fragments of asteroids regularly land on Earth as meteorites. If you examine such a find,...
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Research trio suggest low-relief mountain surfaces due to river network...
This beautiful scenery in Yunnan Province, China, at 3000 m asl is not likely a time capsule that preserved a relict lowland landscape. It must have formed over million of years in situ. Credit:...
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Ascent or no ascent? How hot material is stopped in the Earth’s mantle
Clouds over Australia are shown. Credit: NASA Enlarge The largest magmatic events on Earth are caused by massive melting of ascending large volumes of hot material from the Earth's interior. Gigantic...
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Map shows content and origins of the nation’s geologic basement
Map showing basement domains according to generalized original crust types. Credit: USGS Enlarge A map showing the many different pieces of Earth's crust that comprise the nation's geologic basement...
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New evidence suggests Isthmus of Panama was formed earlier than thought
An 1850 oil painting by Charles Christian Nahl, titled, The Isthmus of Panama on the height of the Chagres River Enlarge (Phys.org)—A team of researchers with members from Panama, Sweden, Switzerland...
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Study uncovers lakes, signs of life under Antarctica’s dry valleys
A helicopter begins a survey with an airborne electromagnetic sensor at Bull Pass in the Wright Valley, McMurdo Dry Valleys, Antarctica. Credit: J. Mikucki Enlarge Many view Antarctica as a frozen...
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