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Why Were There No Tiny Non-Avian Dinosaurs? Mammals May Have Been to Blame

10 August 2026 at 19:06
Torvosaurus gurneyi. Image credit: Β© Sergey Krasovskiy.

Dinosaurs evolved into some of the largest animals ever to walk the Earth, but a new mathematical model suggests that early mammals may have crowded them out of the ecological niches reserved for the smallest creatures.

The post Why Were There No Tiny Non-Avian Dinosaurs? Mammals May Have Been to Blame appeared first on Sci.News: Breaking Science News.

Webb Finds Stellar β€˜Treasure Chest’ in Carina Nebula

10 August 2026 at 15:58
This Webb image shows the Treasure Chest, a cometary globule located within the famous Carina Nebula. Image credit: NASA / ESA / CSA / Webb / M. Reiter / M.H. Γ–zsaraΓ§.

A stunning new image from the NASA/ESA/CSA James Webb Space Telescope reveals a comet-shaped cloud in the Carina Nebula hiding a cluster of about 70 young stars, including a rare giant of O-type nearly 19 times as massive as the Sun.

The post Webb Finds Stellar β€˜Treasure Chest’ in Carina Nebula appeared first on Sci.News: Breaking Science News.

Liquid Nitrogen May Have Flowed on Pluto’s Surface in Recent Past

10 August 2026 at 01:25
This Pluto mosaic was made from New Horizons LORRI images taken on July 14, 2015, from a distance of 49,700 miles (80,000 km). This view is projected from a point 1,118 miles (1,800 km) above Pluto’s equator, looking northeast over the dark, cratered Cthulhu Regio toward the bright, smooth expanse of icy plains called Sputnik Planum. Pluto’s North Pole is off the image to the left. This mosaic was produced with panchromatic images from the New Horizons LORRI camera, with color overlaid from the Ralph color mapper onboard New Horizons. Image credit: S.A. Stern et al.

Planetary researchers analyzing images from NASA’s New Horizons spacecraft have found evidence that liquid nitrogen may still be seeping up from beneath the dwarf planet’s giant glacier, Sputnik Planitia, marking the first suggested case of recently flowing liquid on Pluto’s surface.

The post Liquid Nitrogen May Have Flowed on Pluto’s Surface in Recent Past appeared first on Sci.News: Breaking Science News.

520-Million-Year-Old Fossil from China Fills Gap in Evolutionary History of Cephalopods

30 July 2026 at 20:25
Life reconstruction of Eoceras shaanxiense. Image credit: Dinghua Yang.

Paleontologists have identified the earliest-known cephalopod equipped with a siphuncle -- a tubular extension of the mantle found in shelled cephalopods -- pushing back the fossil record of this key evolutionary feature to the Early Cambrian, roughly 520 million years ago.

The post 520-Million-Year-Old Fossil from China Fills Gap in Evolutionary History of Cephalopods appeared first on Sci.News: Breaking Science News.

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