All articles tagged with #meteorites
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.
Astronauts on the ISS hosted a BioAsteroid experiment where bacteria and a fungus leached metals from crushed meteorite fragments for 19 days. After return to Earth, 18 elements were found to be released, with the fungus producing more carboxylic acids in microgravity to aid dissolution. The microbes stayed active and stable in space, suggesting biology could help future space resource extraction and support life systems beyond Earth.
A NASA-led study of Apollo-era lunar regolith using triple oxygen isotope analysis finds only a small fraction of Earth's ocean water could have been delivered by meteorites over the past four billion years, challenging the long-held view that late meteorite impacts were the primary source of Earth's oceans.
NASA’s Apollo soil study using triple oxygen isotopes shows late meteorite delivery could account for only a small fraction of Earth’s ocean water since ~4 billion years ago, implying meteorites were not the dominant water source; the Moon’s regolith preserves a long impact history, and Artemis-era samples could reveal more.
The article explores the hypothesis that life on Earth may have originated from microorganisms on Mars, which could have been transported via meteorites. It discusses the timing of planetary formation, early conditions on Mars and Earth, and the challenges of microbial survival during space travel, ultimately questioning whether Earth’s life could have come from Mars or if it originated independently on Earth.
Researchers analyzing rare meteorites called carbonaceous chondrites from Antarctica have revealed their potential as sources of valuable materials like transition metals and water for future space mining, although concentrations are lower than Earth's deposits. These primitive asteroids could support in-space infrastructure development, but mining them remains complex and experimental, with specific asteroid types showing more promise for resource extraction.