seismic shaking and perhaps intensified volcanic activity on the Red Planet. “The peak of this impact episode aligns with a period of extensive cooling and major biospheric transitions, making it tempting to link the two,” Bottke said. “On Mars, such...

what scientists call lateralized behavior. The organism, Spriggina floundersi, inhabited the seafloor during the Ediacaran Period (approximately 635–538 million years ago). Its fossilized imprints, recovered from sites in South Australia such as Nilpena...

than a military burial site. Radiocarbon dating places the graves between the 13th and 16th centuries, aligning with the period before the 1540 demolition. Some individuals may have been affiliated with the religious community of St Bavo’s Abbey, while...

clothing customs and military ties. A rare conical hat fashioned from felted wool and dating to the late Roman period in Egypt has been restored and is now on view at the Bolton Museum in England. Radiocarbon dating places the object between A.D. 395...

before being melted down for currency. The find, now known as the Cuerdale Hoard, dates to between 905 and 910 C.E., a period when Viking influence permeated large parts of England and silver circulated through conquest, trade, and diplomatic exchange....

indicate the structure formed about 390 million years ago, pointing to a meteorite impact that occurred during the Devonian period. In collaboration with the Innu Council of Ekuanitshit, the feature has been designated the Uhakkatik crater. Impact melt...

an anomalously slow rotation rate for a star of a given type and age. Researchers could therefore target stars whose spin periods deviate markedly from the norm, rather than searching for excess infrared emission. To test this hypothesis, Torlakcik...

spins up the remnant star and powers it as a celestial lighthouse. What sets this newcomer apart is its unusually high period derivative—a metric of how quickly the spin slows. Measurements indicate a value at least a hundred times larger than those...

remains active, with the helium star transferring material to the white dwarf on a 3.7‑day orbital cycle—roughly twice the period previously estimated. Stripped helium stars are exceedingly scarce, with only a few thousand expected among the Milky Way’s...

heliocentric orbit. Currently classified as an Aten asteroid—objects that cross Earth’s path but have shorter orbital periods—the body completes a solar circuit in roughly 0.9 years. After the flyby, calculations indicate it will shift into the Apollo...

between 1800 and 1850. A sketch reveals the unusual design of the unidentified Great Lakes wreck. Credit: James Conolly The period between 1800 and 1850 was a bustling era for Great Lakes commerce, yet documentation of shipbuilding practices remains...

rather than disease, the identified mechanism may help explain both the fleeting nature of adolescent memories and periods of heightened vulnerability. Retrosplenial Cortex Shows Transient Gap in Early‑Adolescent Memory Access The retrosplenial cortex,...

dates the jars to the late fifth and early fourth centuries BCE, situating the cargo firmly within the late Classical period. No definitive information has yet emerged regarding the ship’s construction date or the circumstances of its sinking. Three...

The find adds a rare interior‑Iberian data point, expanding the geographic scope of known human occupation during this period. “This fossil is only the tip of the iceberg,” she said. “Ruidera still has much to reveal about human evolution in Europe, and...

hanging‑coffin individuals and populations that inhabited southern China and Southeast Asia during the Neolithic era, a period spanning roughly 10,000 B.C. to 2,000 B.C. Genetic parallels suggest that these ancient peoples were likely related to early...

strategies,” Plemper added. “If similar effects are observed in humans, the therapeutic use of GHP‑88310 could shorten the period of contagiousness and lessen the socioeconomic impact of prolonged quarantines.” First author Carolin Lieber, a senior...

Planitia, a vast plain lacking a clearly defined lake basin, and overlays terrain dated to roughly 757 million years ago—a period generally associated with a colder, drier Martian climate. The team hypothesizes that subsurface heat—perhaps from ancient...

suggesting controlled exposure to fire whose purpose remains uncertain. Interior view of Bruniquel Cave during the period when the original entrance remained open. Credit: Génuite and coworkers Reassessing the Timeline Initial investigations in the...

The Stanley R. Mickelsen Safeguard Complex, a concrete monolith built to shield U.S. missile forces, saw only a fleeting period of active service before its mission was rendered moot. Situated close to Nekoma, North Dakota, the installation was...

of the mineral fraction places the bone in the pre‑Roman Iron Age, corresponding to the late fourth–third centuries BCE, a period when Carthaginian forces regularly deployed war elephants across the western Mediterranean. (A) Right third carpal (CIII)...