A new study by Curtin University has revealed what could be the oldest direct evidence of ancient hot water activity on Mars. The research focused on a 4.45 billion-year-old zircon grain from the Martian meteorite NWA7034, also called Black Beauty. The analysis found geochemical signatures suggesting that water-rich fluids were present, providing evidence that Mars may have been habitable in the past.
Do you remember the moment in “Star Wars” when the Death Star destroys Alderaan? Eight laser beams converge at a single point to form a super-powered laser that obliterates the planet. It was a memorable scene that demonstrated the unrelenting power of the Empire.
Although it is unclear whether they were inspired by the scene, Chinese scientists claim they have created a new type of microwave weapon that combines several high-powered electromagnetic waves. They can then concentrate them onto a target.
The weapon system consists of multiple microwave-transmitting vehicles that are deployed to different locations. Each of the vehicles fire microwaves with high-precision synchronization. These merge together into a powerful energy beam to attack one target.
Most of the diverse elements in the universe come from supernovae. We are, quite literally, made of the dust of those long-dead stars and other astrophysical processes. But the details of how it all comes about are something astronomers strive to understand.
How do the various isotopes produced by supernovae drive the evolution of planetary systems? Of the various types of supernovae, which play the largest role in creating the elemental abundances we see today? One way astronomers can study these questions is to look at presolar grains.
These are dust grains formed long before the formation of the sun. Some of them were cast out of older systems as a star fired up its nuclear furnace and cleared its system of dust. Others formed from the remnants of supernovae and stellar collisions. Regardless of its origin, each presolar grain has a unique isotopic fingerprint that tells us its story.
A SPACEPLANE that uses regular runways could fly to space as soon as next year.
Called Dream Chaser, the futuristic spacecraft will fly on a NASA mission to resupply the International Space Station.
The mission – officially called SSC Demo-1 – is due to take place “no earlier than May 2025”
Using the set of first-light observations from the new William Herschel Telescope Enhanced Area Velocity Explorer (WEAVE) wide-field spectrograph, a team of more than 50 astronomers, led by Dr. Marina Arnaudova at the University of Hertfordshire, has presented the first WEAVE scientific results on Stephan’s Quintet in the Monthly Notices of the Royal Astronomical Society.
This state-of-the-art wide-field spectrograph is a 20-million Euro project that brings together leading experts from around the world. WEAVE is set to revolutionize our understanding of the universe, offering unprecedented detail, as demonstrated in this new study of Stephan’s Quintet.
Stephan’s Quintet, also known as the Hickson Compact Group 92, is a nearby galaxy group that consists of five galaxies (NGC 7,317, NGC 7318a, NGC 7318b, NGC 7,319 and NGC 7320c). Ever since its discovery in 1877, it has captivated astronomers, particularly because it represents a galactic crossroad where past collisions between galaxies have left behind a complex field of debris.
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The planet, a very young gas giant, is about 521 light-years away from Earth. Its strange orbit also enables researchers to get exciting information as it transits in front of its parent star with little to no obstructions to Earth-based instruments, like NASA’s Transiting Exoplanet Survey Satellite (TESS), which made the discovery.
IRAS 04125+2902 b is roughly the same age as its parent star, which is far too brief in cosmic terms under our current understanding of planet formation.
IRAS 04125+2902 b has a radius roughly 10.7 times larger than that of Earth, making it comparable in size to Jupiter. However, it is significantly less dense, possessing only 30% of Jupiter’s mass.
New Curtin University-led research has uncovered what may be the oldest direct evidence of ancient hot water activity on Mars, revealing the planet may have been habitable at some point in its past.
The study analyzed a 4.45 billion-year-old zircon grain from the famous Martian meteorite NWA7034, also known as Black Beauty, and found geochemical “fingerprints” of water-rich fluids.
Study co-author Dr. Aaron Cavosie from Curtin’s School of Earth and Planetary Sciences said the discovery opened up new avenues for understanding ancient Martian hydrothermal systems associated with magmatism, as well as the planet’s past habitability.
A massive collision of galaxies sparked by one traveling at a scarcely-believable 2 million mph (3.2 million km/h) has been seen in unprecedented detail by one of Earth’s most powerful telescopes.
The dramatic impact was observed in Stephan’s Quintet, a nearby galaxy group made up of five galaxies first sighted almost 150 years ago.
It sparked an immensely powerful shock akin to a “sonic boom from a jet fighter”—the likes of which are among the most striking phenomena in the universe.
Returning to those Red Monsters, the new JWST data showed that these galaxies produce stars at about two to three times more efficiently than galaxies in the later universe.
The stellar masses of these three galaxies are so large that they require a stellar-mass conversion efficiency of about 50%, higher than the typical efficiency observed in galaxies today. For example, most galaxies at later times convert only about 20% of their available gas into stars. These findings suggest that the early universe may have had a different set of conditions that allowed for much faster and more efficient galaxy growth.
“Our research is transforming our understanding of early galaxy formation,” Mengyuan Xiao, lead author of the study and a postdoctoral researcher at the UNIGE Faculty of Science, said in the statement.
