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Wednesday, 11 September 2024 06:39

Voyager 1 team accomplishes tricky thruster swap

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Voyager 1 team accomplishes tricky thruster swap
A model of NASA’s Voyager spacecraft. The twin Voyagers have been flying since 1977 and are exploring the outer regions of our solar system. Credit: NASA/JPL-Caltech

Engineers working on NASA's Voyager 1 probe have successfully mitigated an issue with the spacecraft's thrusters, which keep the distant explorer pointed at Earth so that it can receive commands, send engineering data, and provide the unique science data it is gathering.

After 47 years, a fuel tube inside the thrusters has become clogged with , a byproduct that appears with age from a rubber diaphragm in the spacecraft's fuel tank. The clogging reduces how efficiently the thrusters can generate force. After weeks of careful planning, the team switched the spacecraft to a different set of thrusters.

The thrusters are fueled by liquid hydrazine, which is turned into gases and released in tens-of-milliseconds-long puffs to gently tilt the spacecraft's antenna toward Earth.

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Berlin, Germany (SPX) Sep 11, 2024
Dark matter, an unseen force believed to hold the universe together, constitutes approximately 85% of all matter and 27% of the universe's content. Although its gravitational effects on galaxies and cosmic structures are well-documented, the true nature of dark matter remains elusive. A dominant theory posits that dark matter could be made up of particles that interact only through gravity
Wednesday, 11 September 2024 16:04

Parker Solar Probe Lines Up for Final Venus Flyby

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Baltimore MD (SPX) Sep 11, 2024
NASA's Parker Solar Probe executed a short maneuver on Aug. 26 that kept the spacecraft on course for the mission's seventh and final planned Venus flyby on Nov. 6. Operating on preprogrammed commands, Parker fired its small directional thrusters for about 17 seconds, changing its velocity by less than a mile per hour, and setting its trajectory some 386 miles (593 kilometers) closer to a
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Greenbelt MD (SPX) Sep 11, 2024
Like two Sumo wrestlers squaring off, the closest confirmed pair of supermassive black holes have been observed in tight proximity. These are located approximately 300 light-years apart and were detected using NASA's Hubble Space Telescope and the Chandra X-ray Observatory. These black holes, buried deep within a pair of colliding galaxies, are fueled by infalling gas and dust, causing them to s
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Los Angeles CA (SPX) Sep 11, 2024
The mystery of how supermassive black holes, which can be millions of times more massive than the sun and sit at the heart of most galaxies, came to exist is one of the great questions in astrophysics. Researchers from the Nevada Center for Astrophysics at UNLV (NCfA) have uncovered new evidence that the supermassive black hole at the center of the Milky Way, called Sagittarius A' (Sgr A')
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Columbus OH (SPX) Sep 11, 2024
In a new study, astronomers report novel evidence regarding the limits of planet formation, finding that after a certain point, planets larger than Earth have difficulty forming near low-metallicity stars. Using the sun as a baseline, astronomers can measure when a star formed by determining its metallicity, or the level of heavy elements present within it. Metal-rich stars or nebulas form
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Los Angeles CA (SPX) Sep 11, 2024
Using a Google AI tool, scientists have revealed how proteins in a heat-loving microbe respond to intense pressure, similar to conditions found in the planet's deepest ocean trenches. This research offers key insights into how life's building blocks may have evolved under early Earth conditions and opens new doors for future studies. The research, now published in 'PRX Life', highlights th
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Berlin, Germany (SPX) Sep 11, 2024
Many imagine the solar system's edge is marked by Neptune, the furthest known planet. However, astrophysicist Susanne Pfalzner from Forschungszentrum Julich notes, "Several thousand celestial bodies are known to move beyond the orbit of Neptune." It is estimated that tens of thousands of objects larger than 100 kilometers exist in this region. "Surprisingly, many of these so-called trans-Neptuni
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Paris, France (SPX) Sep 11, 2024
European Space Agency (ESA) engineers are advancing the capabilities of autonomous Mars rovers, as demonstrated in recent trials conducted in a UK quarry. The ExoMars Rosalind Franklin rover, nicknamed "Codi," showcased its ability to locate and retrieve sample tubes using its robotic arm and sophisticated computer vision system. Codi drove to the sample locations with a remarkable accurac
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Los Angeles CA (SPX) Sep 11, 2024
As part of the Artemis lunar exploration campaign, NASA aims to deepen its understanding of the moon's surface and prepare for future Mars missions. The Artemis missions will target the lunar south pole, a region that holds scientific interest due to its permanently shadowed areas, which may contain water ice reserves vital for sustaining human exploration. This will be NASA's first crewed moon
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