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Category: space – Page 49

Why Aristotle didn’t invent modern science

Modern science has done astounding things: sending probes to Pluto, discerning the nature of light, vaccinating the globe. Its power to plumb the world’s inner workings, many scientists and philosophers of science would say, hinges on its exacting attention to empirical evidence. The ethos guiding scientific inquiry might be formulated so: “Credit must be given to theories only if what they affirm agrees with the observed facts.”

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Those are the words of the Greek philosopher Aristotle, writing in the fourth century BCE. Why, then, was it only during the Scientific Revolution of the 17th century, two thousand years later, that science came into its own? Why wasn’t it Aristotle who invented modern science?

The Hubble Tension Is Becoming a Hubble Crisis

A long-simmering disagreement over the universe’s present-day expansion rate shows no signs of resolution, leaving experts increasing ly vexed.

By Anil Ananthaswamy edited by Lee Billings

Over the past decade, two very different ways of calculating the rate at which the universe is expanding have come to be at odds, a disagreement dubbed the Hubble tension, after 20th-century astronomer Edwin Hubble. Experts have speculated that this dispute might be temporary, stemming from subtle shortcomings in observations or analyses that will eventually be corrected rather than from some flawed understanding of the physics of the cosmos. Now, however, a new study that relies on an independent measure of the properties of galaxies has strengthened the case for the tension. Quite possibly, it’s here to stay.

Space-time-topological events in photonic quantum walks

Combining space topology and time topology, topological states that are localized simultaneously in space and time are theoretically and experimentally demonstrated, potentially enabling the space-time topological shaping of light waves with applications in spatiotemporal wave control for imaging, communications and topological lasers.

Round trip to the ASTEROID BELT in 148 days?! Sunbird Fusion Drive update from Pulsar!

Yesterday, Richard Dinan, CEO of Pulsar Fusion, sent me a ton of new information about their new Sunbird Fusion Drive! Specific capabilities, travel times to multiple destinations throughout the Solar System…they’ve got it all!
And now, Angry is bringing it to you!
#space #fusion #nasa.

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Earth Might Be Sitting in a Massive ‘Supervoid’ in Space

When we gaze out into the cosmos beyond the borders of the Milky Way, we behold multitudes. Space is teeming with galaxies, speckled across the darkness like stars. If we stopped there, it would be easy to assume that the distribution of galaxies is more or less even throughout space-time.

But there’s some method to the madness: rather than wheeling freely about, galaxies tend to concentrate into clusters and clumps and filaments of the cosmic web, attracted by mutual gravity into matter highways, superhighways and nodes.

The inverse of that is voids – regions of significantly lower density, with relatively few galaxies.

Euclid Captures 26 Million Galaxies in Its First Glimpse of the Dark Universe

Euclid is on a quest to unravel one of the universe’s greatest mysteries: why it’s expanding faster and faster. With help from NASA, this space telescope is capturing sweeping views of billions of galaxies, allowing scientists to peer into the deep past. Using light that took billions of years to

Rivaling TNT: Scientists Discover Bizarre “Magic Molecules” With Explosive Potential

Skoltech scientists discovered over 200 carbon-oxygen compounds with high energy potential, some rivaling TNT, offering new insights into non-nitrogen-based explosives and applications in energy, space, and chemical research. Skoltech researchers have conducted a theoretical study exploring a wid

The Particle That Might Explain Why Anything Exists at All

Scientists at CERN have made a groundbreaking discovery that deepens our understanding of why the Universe is made of matter and not antimatter. By analyzing an enormous trove of data from the LHC, researchers observed a subtle but significant asymmetry in the behavior of a particle called the be

Earth’s First Crust Was Continental — Long Before Plate Tectonics Began

New research suggests that Earth’s first crust, formed over 4.5 billion years ago, already carried the chemical traits we associate with modern continents. This means the telltale fingerprints of continental crust didn’t need plate tectonics to form, turning a long-standing theory on its head.

Using simulations of early Earth conditions, scientists found that the intense heat and molten environment of the planet’s infancy created these signatures naturally. The finding shakes up how we understand Earth’s evolution and could even influence how we think about crust formation on other planets.

A surprising shift in earth’s history.