Astronomy
Will Europa Become a New Habitable World When the Sun Becomes a Red Giant?
People always want to know what will happen to Earth when the Sun eventually swells up as a red giant. For one thing, the expanding Sun will turn the inner planets into cinders. It will almost certainly spell the end of life on our planet. Mars might become more temperate and hospitable to life. In addition, it could well be a boon for the gas giant Jupiter and its moons. That's because the habitable zone of the Solar System will move outward from where it is now, to a spot encompassing the Jovian system and forcing changes on all of those worlds.
Demonstrating Lunar Surface Raman Spectroscopy with the Raman Cube Rover
Raman spectroscopy uses scattered to identify a substance’s chemical ingredients and is one of the most widely used scientific methods in space exploration. It is used for lunar exploration to identify volcanic minerals, water ice, and space weathering, and has been limited to obtaining data from lunar orbiters. But how can Raman spectroscopy be conducted on the lunar surface to help us better understand our nearest celestial neighbor? This is what a recent study presented at the 56th Lunar and Planetary Science Conference hopes to address as a team of NASA and academic researchers discussed the Raman Cube Rover (R3R), which would be delivered to the lunar surface via the private space company, Astrobotic.
After Awesome Launch, SpaceX's Starship Spins Out of Control
SpaceX’s Starship super-rocket got off to a great start for its ninth flight test, but the second stage ran into a host of issues and made an uncontrolled re-entry.
SpaceX reached space with Starship Flight 9 launch, then lost control of its giant spaceship (video)
Test of AI weather forecasts shows they miss extreme storms
Test of AI weather forecasts shows they miss extreme storms
AI-powered weather forecasts could miss extreme storms
AI-powered weather forecasts could miss extreme storms
The Last of Us Science Adviser Says COVID Changed How We View Zombie Stories
Behavioral ecologist David Hughes, who consulted on the video game that inspired the hit TV show The Last of Us, speaks about how our experience with the COVID pandemic changed the way we relate to zombie fiction
One Big Beautiful Bill Act Called a Clean Energy ‘Nightmare Scenario’
The One Big Beautiful Bill Act, passed by the House of Representatives last week, would slow efforts to green the energy system as climate change accelerated
How to watch the 2025 Humans to the Moon & Mars Summit May 28 and 29 (video)
Ministrokes Can Be Just as Dangerous for the Brain as Regular Strokes
Ministrokes, also known as transient ischemic attacks, can eventually lead to cognitive declines as steep as those that follow a full-on stroke, new research finds
The Webb Captures Faint Galaxies from the Universe's Ancient Past
The galaxy cluster Abell S1063 dominates the center of this JWST image. It's a massive cluster of galaxies about 4.5 billion light-years away. While it dominates the picture, it's not the primary target. It serves as a gravitational lens that magnifies even more distant galaxies that appear as glowing streaks of light around its circular edges.
A New Nuclear Rocket Technology Takes Another Step Forward
Nuclear Thermal Propulsion (NTP) has stood as a promising potential alternative propulsion technology for decades. Chemical rockets have begun to reach their theoretical maximum efficiency, and their developers have switched their focus to making them cheaper rather than more efficient. NTP should answer that by offering high thrust and specific impulse. NASA's DRACO Program, the standard-bearer for NTP systems, provides a specific impulse of around 900 seconds, about double a traditional chemical rocket, but half that of most ion thrusters. To increase that number even further, researchers at the University of Alabama at Huntsville and The Ohio State University have been working on a novel configuration of NTP called the Centrifugal Nuclear Thermal Rocket (CNTR) that promises almost to double the specific impulse of traditional NTP systems while maintaining similar thrust levels. However, the system has some engineering challenges to overcome, and a new paper coming out in Acta Astronautica describes some incremental progress on making this improved engine a reality.