Astronomy

Astronomers Probe Chemistry of Giant Exoplanet Beta Pictoris b

This artist’s impression shows how the gas giant exoplanet inside the disc of Beta Pictoris may look. Image credit: L. Calçada / ESO.

Using the upgraded GRAVITY+ instrument on ESO’s Very Large Telescope Interferometer (VLTI), astronomers have measured the ratio of carbon isotopes in the atmosphere of the young exoplanet Beta Pictoris b, offering new insights into how giant planets form. This artist’s impression shows how the gas giant exoplanet inside the disc of Beta Pictoris may look. Image credit: L. Calçada / ESO. Frist...

Archaeology

Ancient Turkish Cave Reveals Neanderthals and Homo sapiens Shared Same Way of Life

A group of Neanderthals in a cave. Image credit: Tyler B. Tretsven.

Üçağızlı II Cave on Türkiye’s Mediterranean coast has yielded a rare and detailed record of two Homo species living the same way of life, one after the other, over more than 20,000 years, offering new evidence that the transition from Neanderthals to modern humans in the region was far more culturally seamless than previously understood. A group of Neanderthals in a cave. Image credit: Tyler...

Biology

Scientists Discover Four New Genetic Lineages of Cacao in Peru

Recent findings document the domestication of cacao tree (Theobroma cacao) in the Ecuadorian Amazon region, its region of origin, by at least 5,300 years ago. Lanaud et al. demonstrate the large landscape of domestication of cacao, out of its area of origin, along the Pacific coast of South America, occurring concurrently during this same early time period and in subsequent time periods. Image credit: Fernando Graniel.

In an analysis of 390 traditionally cultivated cacao trees representing traditional Amazonian varieties, researchers identified four previously unknown genetic lineages, with two showing ancestry linked to exceptional flavor potential and offering new opportunities for growers and chocolate makers. Motilal et al. collected cacao samples from eight departments of Peru. Image credit: Fernando Graniel. Cacao...

Geology

Australia’s North Pole Dome Crater is Earth’s Oldest and Only Known Archean Impact Structure

The North Pole Dome crater: (A) simplified map of the East Pilbara Terrane (EPT, Western Australia), showing Paleoarchean granite domes (pink) and greenstone belts (greens and blues); the North Pole Dome (NPD) lies near the terrane center; (B) geological map of the NPD and the shatter-cone field (yellow star); (C) A quartz (Qtz)-carbonate vein cutting shatter-cone lineation. Image credit: Kirkland et al., doi: 10.1130/G54866.1.

Zircon crystals and impact-altered minerals show that a massive asteroid slammed into what is now the Pilbara region of Western Australia about 3 billion years ago. The North Pole Dome crater: (A) simplified map of the East Pilbara Terrane (EPT, Western Australia), showing Paleoarchean granite domes (pink) and greenstone belts (greens and blues); the North Pole Dome (NPD) lies near the terrane center;...

Other Sciences

Ancient Turkish Cave Reveals Neanderthals and Homo sapiens Shared Same Way of Life

A group of Neanderthals in a cave. Image credit: Tyler B. Tretsven.

Üçağızlı II Cave on Türkiye’s Mediterranean coast has yielded a rare and detailed record of two Homo species living the same way of life, one after the other, over more than 20,000 years, offering new evidence that the transition from Neanderthals to modern humans in the region was far more culturally seamless than previously understood. A group of Neanderthals in a cave. Image credit: Tyler...