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NASA's MAVEN spacecraft reveals stunning ultraviolet views of Mars

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NASA's MAVEN (Mars Atmosphere and Volatile EvolutioN) mission has acquired stunning views of Mars in two ultraviolet images taken at different points along our neighboring planet's orbit around the sun. The images show how the Martian atmosphere responds to changes in seasons and solar activity. They also reveal the diversity of clouds and ozone in the upper atmosphere. © NASA/LASP/CU Boulder MAVEN is the first spacecraft dedicated to exploring the tenuous upper atmosphere of Mars. The mission's combination of detailed point measurements and global observations provides a powerful way to understand the properties of the upper atmosphere¹. MAVEN's Imaging Ultraviolet Spectrograph (IUVS) instrument captured the remarkable ultraviolet views. According to NASA, the instrument has been designed to measure ultraviolet wavelengths ranging from 110 to 340 nanometers, which fall outside of the visible range. One image was taken in July 2022, during the southern hemisphere's ...
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Phosphorus, a key element for life, found in Saturn's moon Enceladus

 Scientists have made a breakthrough discovery that could boost the chances of finding life beyond Earth. They have detected phosphorus, a vital element for life, in the ocean of Enceladus, one of Saturn's icy moons. The finding is reported in the journal Nature .  Phosphorus is one of the six essential elements for life, along with carbon, hydrogen, oxygen, nitrogen and sulfur. It is used to build DNA, RNA and cell membranes, and is crucial for energy metabolism and cellular communication. Enceladus is a small moon that has a global ocean of liquid water beneath its frozen surface. The ocean periodically erupts through cracks in the ice, sending plumes of water vapor and ice grains into space. These plumes were sampled by NASA's Cassini spacecraft, which orbited Saturn from 2004 to 2017. Using data from Cassini, researchers found traces of phosphorus in the form of sodium phosphates, a salt sometimes used in deli meat here on Earth, in the ice grains ejected by Enceladus....
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First ever image of a multi-planet system around a Sun-like star

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Astronomers have captured the first ever image of a multi-planet system around a star similar to our Sun. The star, named TYC 8998-760-1, is located about 300 light-years away from Earth and is only 17 million years old. The image, taken by the SPHERE instrument on ESO's Very Large Telescope, shows two giant exoplanets orbiting the star at distances of 160 and 320 astronomical units (au), respectively. For comparison, Neptune orbits the Sun at about 30 au. Image credit : eso The discovery, published in The Astrophysical Journal Letters , is a milestone for direct imaging of exoplanets, which are planets outside our Solar System. Direct imaging is a challenging technique that requires blocking the bright light of the host star to reveal the fainter planets around it. Most of the exoplanets that have been directly imaged so far are either very young or very massive, and orbit very far from their stars. This makes them easier to detect, but also less representative of the majority of ...
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