Pore-scale mechanisms of drag reduction by micro-blowing have rarely been explored. A direct numerical simulation (DNS) study ...

A series of about 5,200 holes stretching nearly a mile (1.5 kilometers) across the Pisco Valley in the southern Peruvian Andes has baffled researchers for nearly a century. But a fresh look at the ...

In South America, a mysterious monument stretches almost a mile (1.5 kilometers) through the southern Peruvian Andes. Called Monte Sierpe, meaning serpent mountain, it consists of rows of around 5,200 ...

In 2023, astronomers detected a huge collision. Two unprecedentedly massive black holes had crashed an estimated 7 billion light-years away. The enormous masses and extreme spins of the black holes ...

A hillside in Peru covered by more than 5000 aligned holes may have been a giant Inca accounting device – a spreadsheet, but on a monumental scale. Tracing across the slopes of Monte Sierpe (Serpent ...

Whenever someone talks about black holes, they almost always talk about the event horizon and the singularity. After all, that's what defines a black hole, right? Well, it depends on what you mean by ...

Sacramento County, California, vote-by-mail envelopes were designed with holes punched into either side of the envelopes’ signature section. The holes’ purpose is to indicate to low-vision voters ...

Some things in cosmology may simply be unknowable. Why is there something rather than nothing? What lies outside the universe? What is inside a black hole? That last one has been niggling at ...

Astronomers have detected a collision between two black holes in unprecedented detail, offering the clearest view yet into the nature of these cosmic oddities and confirming long-held predictions made ...

Assembling data from multiple black hole collisions, that group found that the data agreed with Einstein’s theory as best they could tell. Any deviation from what general relativity predicts for the ...

A powerful 8.8 magnitude earthquake that struck near Russia’s Kamchatka Peninsula on July 29 sent ripples nearly 4,000 miles across the Pacific, disturbing one of the most fragile ecosystems in the ...

One of the most notable aspects about our planet—if observed from the outside—is that it spins. Earth’s spin defines our days, setting the fundamental rhythm of life on our world. The moon spins, too.