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New analysis upends belief that asteroid Vesta has planetary interior
East Lansing MI (SPX) Apr 30, 2025 For decades, scientists believed Vesta, one of the largest objects in our solar system's asteroid belt, wasn't just an asteroid. They concluded that Vesta has a crust, mantle and core - fundamental properties of a planet. Astronomers studied it for clues to how early planets grew, and what Earth might have looked like in its infancy. Now, Michigan State University has contributed to research that flips this notion on its head. A team led by the NASA Jet Propulsion Lab or JPL published ... read more |
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Ancient Scottish meteorite strike rewrites timeline of life on landSydney, Australia (SPX) Apr 30, 2025 New research from Curtin University has dated a massive meteorite strike in northwestern Scotland to 990 million years ago, 200 million years later than previously thought. This discovery reshapes t ... more 
Carbon reactions during impacts reveal why meteorites seem less shockedTokyo, Japan (SPX) Apr 28, 2025 A mystery that has puzzled planetary scientists for three decades-why carbon-bearing meteorites appear less damaged by impacts than their carbon-poor counterparts-has been solved by researchers at K ... more 
NASA's Lucy Spacecraft Images Asteroid DonaldjohansonSan Antonio TX (SPX) Apr 23, 2025 In its second asteroid encounter, NASA's Lucy spacecraft obtained a close look at a uniquely shaped fragment of an asteroid that formed about 150 million years ago. The spacecraft has begun returnin ... more 
A little bit of space on EarthBerlin, Germany (SPX) Apr 22, 2025 There is a large diversity in the chemical composition of astronomical objects such as planets, comets, circumstellar envelopes, or galactic gas clouds. One great challenge in astrochemistry is to u ... more |
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Asteroid risk reevaluated with fresh data from Earth and spaceBerlin, Germany (SPX) Apr 10, 2025 An international coalition of scientists is closely monitoring near-Earth asteroid 2024 YR4, with new calculations showing a dramatic reduction in its potential to strike Earth in 2032. Initially es ... more
Mammals made landfall long before asteroid wiped out dinosaursLondon, UK (SPX) Apr 10, 2025 More mammals were moving from life in the trees to living on the ground several million years before the mass extinction that ended the age of dinosaurs, according to a new study led by the Universi ... more
NASA Webb Telescope Sizes Up Small Asteroid with Big ImplicationsLos Angeles CA (SPX) Apr 10, 2025 NASA's James Webb Space Telescope has provided critical new data on asteroid 2024 YR4, confirming that this near-Earth object poses no significant risk of impact in 2032 or the foreseeable future. ... more
Life rebounded quickly after dinosaur-killing impactLos Angeles CA (SPX) Apr 10, 2025 Roughly 66 million years ago, a colossal asteroid collided with Earth, triggering the mass extinction of the non-avian dinosaurs and wiping out approximately 70% of marine species. But new research ... more
NASA Webb Measures Size and Surface of Near-Earth Asteroid 2024 YR4Los Angeles CA (SPX) Apr 03, 2025 NASA's James Webb Space Telescope has observed asteroid 2024 YR4, revealing it to be roughly 60 meters in diameter-about the height of a 15-story building-and confirming it poses no significant thre ... more |
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Mammals were shifting to ground life long before dinosaur extinction
London, UK (SPX) Apr 03, 2025 New findings from the University of Bristol suggest that mammals had begun transitioning from arboreal habitats to terrestrial ones several million years prior to the asteroid strike that caused the extinction of the dinosaurs. Published in the journal Palaeontology, the research highlights that numerous mammalian species were already adapting to life on the ground before the catastrophic event at the end of the Cretaceous. The study draws on the analysis of fossilised limb bone ends from marsupia ... read more
NASA says asteroid 2024 YR4 size of a 10-story building; increases chances of moon impactWashington DC (UPI) Apr 3, 2025 NASA said that an asteroid previously believed to be destined for Earth is the size of a 10-story building and is now more likely to make impact with the moon. ... more |
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Rising odds asteroid that briefly threatened Earth will hit Moon Paris (AFP) April 3, 2025 An huge asteroid that was briefly feared to strike Earth now has a nearly four percent chance of smashing into the Moon, according to new data from the James Webb Space Telescope. ... more 
Key Component for NASAs NEO Surveyor Returns to JPLLos Angeles CA (SPX) Apr 02, 2025 NASA's Near-Earth Object (NEO) Surveyor mission is on track for a planned launch in late 2027, with a major milestone recently achieved. A critical part of the spacecraft-its instrument enclosure-re ... more
In the asteroid belt a mudball meteorite defied the oddsLos Angeles CA (SPX) Apr 01, 2025 An international team of scientists has unraveled the story behind the April 2019 fall of rare meteorites near Aguas Zarcas in northern Costa Rica, highlighting that these so-called "mudball" meteor ... more 
Meteorite origins mapped to regions of asteroid beltLos Angeles CA (SPX) Mar 19, 2025 A comprehensive review in *Meteoritics and Planetary Science* reveals how astronomers have traced the source of various meteorite types to specific, previously unknown regions within the asteroid be ... more 
New Modeling Assesses Age of Next Target Asteroid for NASA's LucySan Antonio TX (SPX) Mar 18, 2025 Although NASA's Lucy spacecraft's upcoming encounter with the asteroid Donaldjohanson is primarily a mission rehearsal for later asteroid encounters, a new paper suggests that this small, main belt ... more |
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