Search results for drag force

Space Exploration Mar 4, 2024

New study addresses how lunar missions will kick up moondust

Before the end of this decade, NASA plans to return astronauts to the moon for the first time since the Apollo Era. But this time, through the Artemis Program, it won't be a "footprints and flags" affair.

Astronomy Feb 16, 2024

Even if we can't see the first stars, we could detect their impact on the first galaxies

For a long time, our understanding of the universe's first galaxies leaned heavily on theory. The light from that age only reached us after traveling for billions of years, and on the way, it was obscured and stretched into ...

Economics & Business Feb 13, 2024

China's doom loop: A dramatically smaller (and older) population could create a devastating global slowdown

China has announced that in 2023 its population declined from 1.4118 to 1.4097 billion people. Forecasting by the UN suggests China's population will dip to 1.313 billion by 2050 and then down to about 800 million by 2100. ...

Earth Sciences Feb 6, 2024

Geoscientists find Pacific plate is scored by large undersea faults that are pulling it apart

A team of geoscientists from the University of Toronto is shedding new light on the century-old model of plate tectonics, which suggests the plates covering the ocean floors are rigid as they move across the Earth's mantle.

Polymers Jan 26, 2024

Bioinspired hydrogel pattern enhances atmospheric water harvesting via directional droplet steering

The water in the air originates from both natural and forced evaporation, with condensation being the final and crucial step in water harvesting. Condensation involves nucleation, growth, and shedding of water droplets, which ...

General Physics Jan 10, 2024

Scientists resolve intriguing phenomenon of superlubricity and formulate its laws

Skoltech researchers have explained why very weak friction obeys different laws than those governing regular friction as we know it from school physics. Among other unexpected and counterintuitive features, the alternative ...

Biotechnology Jan 9, 2024

Fastest swimming insect could inspire uncrewed boat designs

Whirligig beetles, the world's fastest-swimming insect, achieve surprising speeds by employing a strategy shared by speedy marine mammals and waterfowl, according to a new Cornell University study that rewrites previous explanations ...

Evolution Jan 2, 2024

The mighty coast redwoods are born to change. But can they evolve fast enough to survive climate warming?

Coast redwoods—enormous, spectacular trees, some reaching nearly 400 feet, the tallest plants on the planet—thrive mostly in a narrow strip of land in the Pacific Northwest of the United States. Most of them grow from ...

Paleontology & Fossils Dec 27, 2023

Unusual ancient elephant tracks had our team of fossil experts stumped—how we solved the mystery

Over the past 15 years, through our scientific study of tracks and traces, we have identified more than 350 fossil vertebrate tracksites from South Africa's Cape south coast. Most are found in cemented sand dunes, called ...

Ecology Dec 21, 2023

In mighty Atlantic Ocean, ecosystem wonders and threats lie below the surface

Scientists from numerous countries are joining forces to tackle risks to life in the world's second-largest ocean.

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