All articles tagged with #meteorites
Astronomers used computer simulations to show a dust-trap ring just outside Jupiter’s orbit that concentrates material into two generations of planetesimals, potentially explaining carbonaceous chondrite meteorites found on Earth and highlighting the ring as a key birthplace for early planets in our solar system.
Simulations show a dust-loaded ring just outside Jupiter acted as a long-lasting dust trap, producing multiple generations of planetesimals with varied compositions over millions of years and linking to meteorite types like carbonaceous chondrites, offering insight into the Solar System’s early planet-building history.
New isotopic evidence suggests Earth formed largely from material in the inner Solar System, with Jupiter’s gravity acting as a barrier that kept outer Solar System material from mixing into Earth; while most building blocks were local, some water and possibly carbon may have arrived later from outer-body impacts.
New isotopic analyses of meteorites and early Earth rocks indicate Earth formed predominantly from material from the inner Solar System, with Jupiter’s gravity acting as a barrier that limited outer-Solar-System material; the planet’s overall isotopic composition is homogeneous, while water (and some carbon) likely arrived later from outer-body sources.
A Basque Country team analyzed six Martian meteorite slices and found traces of ballpoint-pen ink and other contaminants tied to sample processing, not Martian material. Using Raman spectroscopy, they identified seven contaminants, including a copper compound, printer-ink molecules, and blue polyester, across samples with and without prior processing. While analytic methods can distinguish these contaminants, the study underscores the lack of standardized, contamination-aware prep protocols and proposes steps to minimize leftovers as future Mars sample-return missions proceed.
During a roughly seven-hour lunar observation, Artemis II crew reported six meteorite flashes on the Moon—seen in real time as white-to-bluish pinpricks of light—mostly during a solar eclipse. Scientists say these were likely small projectiles and plan to compare the sightings with orbital data to estimate meteoroid flux near the Moon, informing future lunar-base planning.
During Artemis II's flyby of the Moon's far side in near-dark conditions, the crew observed up to six brief flashes caused by tiny meteorites hitting the lunar surface; the flashes lasted under a second and weren't captured by the onboard cameras, but NASA confirmed they were natural impacts. The event, visible due to the solar eclipse darkening the far side, helps refine models of meteoroid risk for future bases and informs shielding and habitat planning for lunar exploration.
A bright fireball lit up Texas on Saturday as a roughly one-ton meteor traveled over the state, exploded midair, and fragmented into pieces that fell across Houston; NASA says fragments may have struck a home, with eyewitnesses reporting a loud boom and a ceiling hole while the American Meteor Society logged hundreds of sightings.
Three meteorites have fallen to Earth this month, including one that pierced a Texas home, sparking renewed interest from meteorite hunters who are racing to Ohio and other states to recover fragments that can fetch high prices. Experts say the events are random coincidences tied to Earth’s position in space, while ownership typically goes to landowners if a fragment lands on private property.
A rare daytime meteor exploded over the Houston area on March 21, with NASA's ARES releasing a provisional strewn-field map showing where meteorite fragments may have fallen, including heavier shards (about 1 kg) likely in red zones between Willowbrook and Northgate Crossing; the event produced a bright flash detectable by GOES satellites and ground-level pressure waves. The map is tentative and warns against trespassing as residents search private property; the piece also notes a separate daytime fireball in Ohio on March 17.
A meteor explosion over Northeast Ohio spurred a weekend influx of visitors to Medina County, boosting local businesses as people search for meteorites, while authorities report rising trespassing calls amid the hunt.
A rare daytime fireball over northern Ohio on March 17 exploded in the atmosphere, likely scattering meteor fragments in the Medina County area between Akron and Canton. Ground pieces are expected to be small (about 1–2 inches) with some residents already reporting walnut-sized finds. If you stumble on a rock, don’t touch it with bare hands, compare it to confirmed meteorite images, and contact a local university geology department for verification. Meteorites are generally safe but should be handled with care. The next notable sky show is the Lyrids meteor shower (April 16–25).
Two Ryugu aggregates contain all five canonical nucleobases (adenine, guanine, cytosine, thymine, uracil) plus related N-heterocycles, supporting extraterrestrial delivery of basic life-building blocks. The study finds purine/pyrimidine ratios that correlate with ammonia levels and differ from Bennu, Orgueil, and Murchison, suggesting different parent-body chemistries but a shared formation pathway for nucleobases on primitive Solar System bodies and implications for Earth's prebiotic inventory.
Astronauts aboard the International Space Station used bacteria and the fungus Penicillium simplicissimum to bioleach platinum and palladium from L-chondrite meteorite samples. The experiments showed microgravity enhances the fungus’s metal uptake and release, making space-based bioleaching more effective than on Earth and highlighting a potential path toward mining valuable metals in space, alongside ongoing asteroid-mining efforts like TransAstra.
Presolar grains in meteorites—older than the Sun—are helping scientists test how our solar system formed. Evidence of aluminum-26 without iron-60 argues against a simple nearby supernova trigger and favors a scenario where winds from a Wolf-Rayet star delivered aluminum-26 into the nascent solar nebula; researchers are using nanoprobe analysis of meteorite grains to confirm this, though the origin story remains under debate.