Hidden Beta Pictoris giant world & Atmospheric retention ranks rocky planets - Space News (Jul 24, 2026)

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Atmospheric retention ranks rocky planets - A new exoplanet habitability model focuses on whether rocky worlds can hold onto their atmospheres over geologic timescales, giving researchers a better way to rank promising targets. By adding atmospheric survival to the usual habitable zone logic, scientists can better narrow the search for potentially life-friendly planets beyond Earth. Webb captures ancient galaxy cluster - The James Webb Space Telescope has captured a striking view of galaxy cluster MACS J0553.4-3342, showing it as it appeared 4.4 billion years ago. The image offers both a dramatic look-back-time snapshot and valuable data on how massive galaxy clusters form and evolve. Mercury ends apparent retrograde motion - Mercury has reached a stationary point in the sky, ending its apparent retrograde motion and beginning to move eastward again against the background stars. The event is a useful reminder that retrograde is a line-of-sight effect caused by orbital motion, and it gives skywatchers a timely target in the pre-dawn sky. SpaceX servicing launch Starship update - SpaceX has launched a robotic servicing spacecraft toward geosynchronous orbit for a long-duration mission focused on maintaining valuable satellites in space. At the same time, the company has retargeted Starship's thirteenth integrated flight test for July 24 because of weather, underscoring both the growth of orbital infrastructure and the realities of launch operations. Episode Transcript Hidden Beta Pictoris giant world First up, the James Webb Space Telescope has helped astronomers uncover Beta Pictoris d, a giant exoplanet hiding in a system that scientists have been studying for years. What makes this especially important is the method: instead of simply spotting the planet directly, researchers identified it through the spectral signature of its atmosphere, including molecules such as carbon monoxide, methane, and water vapor. In a dusty system where ordinary imaging can miss things, that kind of atmospheric detection could become a major new tool for finding worlds that were effectively hiding in plain sight. Atmospheric retention ranks rocky planets Next, a new exoplanet model is trying to answer a more practical question: not just where rocky planets are, but which ones are most likely to stay habitable for the long haul. The framework ranks planets by how well they can retain atmospheres over geologic timescales, taking into account the way gravity and stellar radiation can strip gases away. That's a big deal because a planet can sit in the so-called habitable zone and still be a poor candidate for life if it can't hold onto the atmosphere needed to regulate temperature and chemistry. Webb captures ancient galaxy cluster Webb is also making news on a much larger scale, with a new image of the young galaxy cluster MACS J0553.4-3342. The light in that image has taken about 4.4 billion years to reach us, so we're seeing the cluster as it existed deep in the past while its structure was still taking shape. Images like this are more than cosmic eye candy; they help astronomers study how galaxies gather into clusters, how gas behaves in these giant environments, and how the universe built up its large-scale structure over time. Mercury ends apparent retrograde motion Closer to home, Mercury has reached a stationary point in the sky, marking the end of its apparent retrograde motion. That doesn't mean the planet actually reversed course around the Sun; it's an effect created by the changing geometry between Mercury, Earth, and the background stars. For skywatchers, Mercury is a challenging pre-dawn target in Gemini, low in the eastern sky and only thinly illuminated, but events like this are a great chance to connect the idea of orbital mechanics with something you can actually try to observe yourself. SpaceX servicing launch Starship update Finally, on the spaceflight side, SpaceX launched a robotic servicing spacecraft toward geosynchronous orbit on July 23, starting what has been described as a decade-long mission. The broader significance is clear: satellite operations are moving toward a future where expensive spacecraft can be inspected, maintained, and potentially extended in service rather than simply abandoned when problems arise. Meanwhile, SpaceX has also shifted Starship's thirteenth integrated flight test to the evening of July 24 because of weather, a reminder that even the most ambitious launch systems still answer to conditions here on Earth. Subscribe to edition specific feeds: - Space news * Apple Podcast English * Spotify English * RSS English Spanish French - Top news * Apple Podcast English Spanish French * Spotify English Spanish French * RSS English Spanish French - Tech news * Apple Podcast English Spanish French * Spotify English Spanish Spanish * RSS English Spanish French - Hacker news * Apple Podcast English Spanish French * Spotify English Spanish French * RSS English Spanish French - AI news * Apple Podcast English Spanish French * Spotify English Spanish French * RSS English Spanish French Visit our website at https://theautomateddaily.com/ Send feedback to [email protected] Youtube LinkedIn X (Twitter)