The Origin of Earth’s Water
Earth is an ocean world with approximately 70 percent of its surface covered with water. In addition, a quantity of water equal to several Earth-size oceans is thought to be […]
Tag Archives: Earth
Rapid Variations of Earth’s Magnetic Field
Earth’s magnetic field provides a barrier shielding Earth from harmful cosmic rays as well as helping sustain our atmosphere by deflecting the solar wind. It is produced by a geodynamo […]
Gases from Yellowstone Suggest a Chondritic Source of Earth’s Volatiles During Early Accretion
Earth is a volatile-rich planet. Volatile elements have played an important role in the geological evolution of Earth and were also responsible for creating habitable environments, where life could evolve […]
New Isotopic Constraints Support Early Plate Tectonics on Earth and Rapid Mantle Mixing
The differentiation of silicate mantles in the terrestrial planets can be traced by examining the Sm-Nd (samarium-neodymium) isotopic system in available mantle-derived samples. For example, the decay of 146Sm yields […]
Earth and the Moon Aren’t as Similar as Previously Thought
How the Moon formed is a long-debated question. According to the giant impact theory, the Moon formed from a collision between the early Earth and a rocky body called “Theia.” […]
Oldest Impact Structure on Earth Identified
A study led by Timmons Erickson of Jacobs/NASA Johnson Space Center has identified Yarrabubba, a 70-kilometer-diameter crater in Western Australia, as the oldest impact structure on Earth. Rock samples from […]
Earth and Moon Were Pummeled Beginning 300 Million Years Ago
Impact cratering from asteroids and comets is perhaps the most important process that shapes planet surfaces in the solar system, so it is important to know the rate of impact […]
Helium Mineral Suspected in Earth’s Deepest Mantle
While it has been known for a long time that Earth’s mantle contains primordial helium that dates back to the early days of our universe and is continuously degassed into […]
EPSC 2018 Call for Abstracts: Late Accretion onto the Moon, Earth and other Terrestrial Planets
Dear colleagues, We would like to invite you to submit an abstract to the European Planetary Science Congress 2018, EPSC 2018 (16–21 September 2018, Berlin, Germany), on the Session LSE1/TP15: […]
2018 Goldschmidt Session: From Source to Sink – Geochemical Sulfur Cycles on Earth and Mars
We would like you to consider submitting an abstract and attending the following technical session: 11d “From Source to Sink – Geochemical Sulfur Cycles on Earth and Mars” during the […]
Extra Mass Goes Straight to Earth’s Core
After the formation of the Moon, leftover planetesimals continued to bombard Earth for a prolonged period of time, adding as much as 0.5% of Earth mass (2×1024 kg of material). […]
GSA 2017 Session T.199: Basalt Weathering on Earth and Mars
We invite you to submit an abstract to our session on “Basalt weathering on Earth and Mars” at this year’s GSA Annual Meeting in Seattle, WA on October 22-25, 2017. […]
THE 4TH ELSI SYMPOSIUM IN TOKYO, JAPAN
Three Experiments in Biological Origins: Early Earth, Venus and Mars January 12 – January 16, 2016 Kuramae Hall, Tokyo Institute of Technology, Tokyo, Japan Only Earth has generated and maintained a […]
Advanced Deadline for Student Travel to May 2015 Comparative Tectonics and Geodynamics of Venus, Earth, and Exoplanets Conference at Cal Tech
ADVANCED DEADLINE FOR STUDENT TRAVEL TO MAY COMPARATIVE TECTONICS AND GEODYNAMICS OF VENUS, EARTH, AND EXOPLANETS CONFERENCE AT CAL TECH To meet NASA/JPL requirements for forecasting Conference Travel, the applications […]
Comparative Tectonics and Geodynamics-First Announcement Available Now
Comparative Tectonics and Geodynamics of Venus, Earth, and Rocky Exoplanet Workshop First Announcement Available Now! The Comparative Tectonics and Geodynamics of Venus, Earth, and Rocky Exoplanets Workshop will be held May 4–6, […]
AGU SESSION PS2464 – ICY WORLD ERUPTIONS AND THEIR ANALOGUES
AGU Fall Meeting in San Francisco, CA, December 15-19, 2014. The potential existence of large plumes of water emitted from Europa’s surface has exciting implications for assessing the habitability of this icy […]
NASA Mars Rover Curiosity Sees ‘Evening Star’ Earth
New images from NASA’s Curiosity Mars rover show Earth shining brighter than any star in the Martian night sky. The rover’s view of its original home planet even includes our […]
NASA: Back to Work, Back to Mission
NASA is once again open for business in a big way. While we were out, several of our on-going missions achieved significant milestones, and although it will take a little […]
Earth from Juno
On Oct. 9, Juno flew by Earth using the home planet’s gravity to get a boost needed to reach Jupiter. The JunoCam caught this image of Earth, and other instruments […]