Earth

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    Chemists have uncovered a chemical reaction that could allow scientists to study the ancient atmospheres of Earth and Mars. The technique could yield clues about past life on Earth - and the potential for past life on Mars.
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    The Earth has plunged into a deep freeze several times in the past, with ice covering the land and sea for millions of years. Researchers are studying how the planet eventually escaped these cold spells, and whether Earth-like planets elsewhere in the galaxy may be
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  • A Late Birth for the Earth and Moon
    The Earth and Moon may have been formed much later than previously believed. Understanding the history and formation of the Earth is important in determining the potential for habitable worlds around distant stars.
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    Four billion years ago, the Sun radiated less energy than it does today. Scientists once believed that greenhouse gases must have helped the Earth stay warm during this time. However, new research shows that the large oceans may have simply absorbed more heat.
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    According to NASA scientist David Morrison, the widespread Internet rumor that the world will end in 2012 due to some astronomical event is a hoax. Dr. Morrison attributes the hype to 'cosmophobia' fueled by fake science websites and people trying to cash in on public
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    De acordo com o cientista David Morrison da NASA, o rumor da internet amplamente difundido de que o mundo acabará em 2012 devido a algum evento astronômico é uma farsa. O Dr. Morrison atribui o engodo à “cosmofobia” abastecida por páginas virtuais de falsa ciência
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    The atmosphere of the early Earth may have been filled with particulate haze, much like a smoggy day in Los Angeles. This hazy air would have affected the ancient climate and even may have influenced the origin and evolution of life.
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  • A Carbonyl Sulphide Blanket
    In the early days of the solar system, our Sun would not have been hot enough to keep the Earth from freezing. However, liquid water was present on the early Earth. Now, scientists believe that greenhouse gasses may have played a role in keeping Earth's
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    Sedimentary rocks that are 2.4 billion years old may indicate that the early atmosphere of Earth was oxygen-rich. The strongest evidence for an oxygen-poor atmosphere on the early Earth has now been brought into question.
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    Scientists have shown that variations in earthshine – the reflection of light from the Earth's land masses and oceans – can be viewed on the dark side of the moon. The study may help astronomers search for habitable, earth-like planets around distant stars.
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  • Sick Earth
    Geologists studying mass extinctions in Earth's history have determined that the majority of extinction events were due to climate change rather than asteroid impacts.
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  • Space on Earth
    In his book, "Space on Earth," microbiologist Charles Cockell urges space scientists and environmentalists to work together for the future for humanity.
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