Astronomers explain Mars’ watery reflections

This image from NASA’s Mars Reconnaissance Orbiter shows the edge of the Martian South Pole Layered Deposit. The stack of fine layering is highlighted by the rays of the polar sun. Credit: NASA, JPL-Caltech, University of Arizona/Provided There is water in many places on Mars, including most of both polar ice caps—all in the frozen … Read more

Search for clues may explain collapse of ancient city in Mexico

Feben Ruscitti, a senior majoring in anthropology and classical studies, and Serena Webster, a graduate student in anthropology, sift through dirt to recover any missed artifacts from the excavation site in Mexico, July 2022. Credit: Andrew Somerville/Iowa State University Built more than a thousand years before the Aztec arrived in central Mexico, Teotihuacan was once … Read more

A baby fossil helped scientists explain how mammals thrived after the dinosaur extinction

An artist’s impression of the Pantolambda bathmodon. Credit: H Sharpe, Author provided Sixty-two million years ago, a mother gave birth to a baby. Overcoming the shock of birth in a matter of minutes, the baby began to explore the world around it. The baby started to suckle from its mother, a natural instinct shared by … Read more

Size alone doesn’t explain how they can eat such big prey

Integrative Organismal Biology (2022). DOI: 10.1093/iob/obac033″ width=”520″ height=”530″/> Range of sizes used to determine maximal gap. The inset shows brown treesnakes (SVL = 40,177 cm; gape = 1.2, 5.7 cm), whereas the Burmese pythons (SVL = 61,397 cm; gape = 2.8, 22 cm) are in the background. All images are to the same scale. The … Read more

Researchers unfold elegant equations to explain the enigma of expanding origami

Some origami figures expand when stretched, a configuration useful to scientists and engineers. Credit: Robert Felt/Georgia Tech Most materials—from rubber bands to steel beams—thin out as they are stretched, but engineers can use origami’s interlocking ridges and precise folds to reverse this tendency and build devices that grow wider as they are pulled apart. Researchers … Read more

Experts explain why China is unlikely to seize the moon

This article was originally published at The Conversation. (opens in new tab) The contributed the article to Space.com’s Expert Voices: Op-Ed & Insights. Svetla Ben-Itzhak (opens in new tab)Assistant Professor of Space and International Relations, Air UniversityR. Lincoln HinesAssistant Professor, West Space Seminar, Air University, Air University NASA Administrator Bill Nelson recently expressed concerns over … Read more

Clashes of inference and perspective explain why children sometimes lose the plot in conversation

An example of the cards used in the experiment. The child could see all four cards, but had a conversation with a puppet manipulated by an adult, which could not ‘see’ the card top right. Thus, if the puppet asked for “the card with pears on”, the child had to grasp that they meant the … Read more

Gemini north telescope helps explain why Uranus and Neptune are different colors — ScienceDaily

Astronomers may now understand why the similar planets Uranus and Neptune are different colors. Using observations from the Gemini North telescope, the NASA Infrared Telescope Facility, and the Hubble Space Telescope, researchers have developed a single atmospheric model that matches observations of both planets. The model reveals that excess haze on Uranus builds up in … Read more