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Ancient two-legged crocodile left behind these impressive footprints

Artist’s interpretation of the Cretaceous two-legged crocodiles.Image: Anthony Romilio Modern crocodiles are known for their sprawling four-legged gait, but this Cretaceous crocodile walked on two legs as it roamed the prehistoric coasts, as evidenced by well-preserved footprints that it left behind. This extraordinary fossil trace, called Batrachopus grandis, was discovered on the Sacheon Jahye-ri site in South Korea, which dates …

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In the movement of the largest moon of Saturn, a shock

(Newser) – Saturn’s largest moon is moving away from the planet 100 times faster than you think – a discovery that helps cement a new theory on how moons migrate. NASA explains why moons move at all: the gravity of a moon attacks the planet it is orbiting, “causing a temporary swelling in the planet as it passes. Over time, …

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The Mars 2020 launch expires in three days

WASHINGTON – A “hiccup” launch vehicle dismissed NASA’s Mars 2020 three-day rover mission launch next month. Steve Jurczyk, NASA associate administrator, revealed the delay in a presentation at a joint meeting of the National Academies’ Aeronautics and Space Engineering Board and Space Studies Board (SSB) on June 9. “We had a minor glitch with ULA and the launch vehicle processing, …

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The largest asteroid to close by (and not spotted) this year Space

-> We hear a lot about asteroids or comets passing close to Earth, but what does “close” mean? For a comet, it could mean millions of miles. For an asteroid, it could also mean huge distances, beyond the moon’s orbital distance of about a quarter of a million miles. On the other hand, space rocks arrive closer our moon attracts …

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The largest asteroid to close by (and not spotted) this year Space

-> We hear a lot about asteroids or comets passing close to Earth, but what does “close” mean? For a comet, it could mean millions of miles. For an asteroid, it could also mean huge distances, beyond the moon’s orbital distance of about a quarter of a million miles. On the other hand, space rocks arrive closer our moon attracts …

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Observation of Bose-Einstein condensates in a research laboratory in orbit around the Earth

1. Leanhardt, A. E. et al. Adiabatic and evaporative cooling of Bose-Einstein condensates below 500 picokelvin. Science 301, 1513-1515 (2003). ADS CAS Article Google Scholar 2. Ammann, H. & Christensen, N. Delta kick cooling: a new method for cooling atoms. Phys. Rev. Lett. 78, 2088–2091 (1997). ADS CAS Article Google Scholar 3. Safronova, M. et al. Search for new physics …

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Scientists grow “model” human embryos from stem cells

Paris (AFP) – Scientists developed a “model” of human embryos using human stem cells, in a breakthrough that could provide a vital insight into the early stages of childhood development, new research showed Thursday. The teams from the University of Cambridge and the Hubrecht Institute based in the Netherlands said that their model will allow them to observe unprecedented processes …

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The extraordinary 3-star experiment validates the fundamental principle of Einstein’s general relativity

Again, scientists validated an important component of Einstein’s theory of general relativity. In particular, a trio of two dwarf white stars and a collapsed neutron star demonstrated the concept of freefall, according to research published this month in the journal Astronomy and astrophysics. This is the idea, notoriously illustrated by the thought experiment of Galileo’s Leaning Tower of Pisa, according …

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