Earth-size, habitable-zone planet found hidden in early NASA Kepler data

Exoplanet illustration (stock image; elements furnished by NASA).Credit: © sdecoret / Adobe Stock A team of transatlantic scientists, using reanalyzed data from NASA’s Kepler space telescope, has discovered an Earth-size exoplanet orbiting in its star’s habitable zone, the area around a star where a rocky planet could support liquid water.advertisement Scientists discovered this planet, called Kepler-1649c, […]

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When three species of human ancestor walked the Earth

Homo erectus word cloud (stock image).Credit: © ibreakstock / Adobe Stock An international team, including Arizona State University researcher Gary Schwartz, have unearthed the earliest known skull of Homo erectus, the first of our ancestors to be nearly human-like in their anatomy and aspects of their behavior.advertisement Years of painstaking excavation at the fossil-rich site of Drimolen, nestled […]

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In Earth’s largest extinction, land animal die-offs began long before marine extinction

View of Earth from space (stock image).Credit: © studio023 / Adobe Stock The mass extinction at the end of the Permian Period 252 million years ago — one of the great turnovers of life on Earth — appears to have played out differently and at different times on land and in the sea, according to newly […]

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Geologists determine early Earth was a ‘water world’ by studying exposed ocean crust

Ocean panorama (stock image).Credit: © peangdao / Adobe Stock The Earth of 3.2 billion years ago was a “water world” of submerged continents, geologists say after analyzing oxygen isotope data from ancient ocean crust that’s now exposed on land in Australia.advertisement And that could have major implications on the origin of life. “An early Earth without […]

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Ancient meteorite site on Earth could reveal new clues about Mars’ past

Illustration of Mars and Jezero Crater, landing site for upcoming Mars 2020 rover mission (stock image; elements furnished by NASA).Credit: © mkarco / Adobe Stock Scientists have devised new analytical tools to break down the enigmatic history of Mars’ atmosphere — and whether life was once possible there.advertisement A paper detailing the work was published today […]

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A plan to save Earth’s ocean

At least 26 per cent of our oceans need urgent conservation attention to preserve Earth’s marine biodiversity, a University of Queensland-led international study has found.advertisement Dr Kendall Jones said the international community needed to rapidly increase marine conservation efforts to maintain the health of the world’s oceans. “Preserving a portion of habitat for all marine […]

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Earth formed much faster than previously thought, new study shows

Illustration of protoplanetary disk (stock image).Credit: © Peter Jurik / Adobe Stock The precursor of our planet, the proto-Earth, formed within a time span of approximately five million years, shows a new study from the Centre for Star and Planet Formation (StarPlan) at the Globe Institute at the University of Copenhagen.advertisement On an astronomical scale, this […]

Read More Earth formed much faster than previously thought, new study shows