At a distance of about 1,400 parsecs (4,600 light-years), Cygnus OB2 is the closest massive young association to the Sun. It contains hundreds of massive stars as well as thousands of lower-mass stars ...

Dedicated to the Egyptian deity Khnum, the temple of Esna is one of the last examples of ancient Egyptian temple architecture. Only the vestibule, called the pronaos, of the original temple complex ...

Paleontologists have found a fossilized jaw fragment and three isolated teeth from a new, relatively large (by Late Cretaceous standards) metatherian species in the layers of the Williams Fork ...

On Earth, solar radiation can transmit down to multiple meters within ice, depending on its optical properties. Organisms within ice can harness energy from photosynthetically active radiation while ...

New research shows that approximately 70% of meteorites originate from at least three recent break-ups of massive asteroids. A class of meteorites called ordinary chondrites make up around 80% of ...

Astronomers using the NASA/ESA Hubble Space Telescope have made a unique timelapse of R Aquarii’s dynamic behavior from observations spanning from 2014 to 2023. Located 650 light-years away, R Aquarii ...

In the study, University of Maryland paleontologist Thomas Holtz Jr. and his colleagues examined two-toed footprints produced by a small, bird-like microraptorine dinosaur moving at high speed.

A bright comet from the Oort cloud named C/2023 A3 (Tsuchinshan-ATLAS) is passing by Earth and will be visible through the second half of October 2024. Comet Tsuchinshan-ATLAS was discovered by ...

Paleontologists say they’ve identified a new species of marine reptile in the ophthalmosaurid genus Platypterygius that lived approximately 125 million years ago. Ophthalmosauridae are a family of ...

The El Niño-Southern Oscillation, which is characterized by irregular alternations between anomalously warm (El Niño) and cold (La Niña) conditions, was present at least 250 million years in the past, ...

ESA astronomers have released a 208-gigapixel mosaic of images taken by Euclid, a mission launched in 2023 to study why the Universe is expanding at an accelerating rate. The new Euclid mosaic ...

Two ecospecies of Helicobacter pylori — named ‘Hardy’ and ‘Ubiquitous’ — co-existed in the stomachs of modern humans since before they left Africa and were dispersed around the world by human ...