A 500-kilometre-wide object in a similar orbit to Pluto challenges our assumptions about small bodies in the outer solar system
Category: space travel
Something Disturbing Happens When You Solve Einstein’s Equations This Way
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Kurt Gödel discovered a solution to General Relativity that allows time travel without any exotic physics, revealing that the theory doesn’t actually guarantee a consistent chain of cause and effect. His “Gödel universe” shows that under certain conditions, the structure of spacetime itself can loop back on itself—blurring the line between past and future and exposing a deep limitation in our understanding of reality.
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Hosted by matt o’dowd written by matt o’dowd post production by leonardo scholzer directed by andrew kornhaber associate producer: bahar gholipour executive producer: andrew kornhaber executive in charge for PBS: maribel lopez director of programming for PBS: gabrielle ewing assistant director of programming for PBS: mike martin.
Explosive evaporation unlocks new possibilities in 3D printing and chemical analysis
Water droplets might seem simple at first. But when nearing evaporation, a desperate power struggle of competing physical forces can emerge, with explosive effects. In a Proceedings of the National Academy of Sciences publication, researchers have taken a closer look at the physics of charged water droplets on frictionless surfaces, observing spontaneous jets of microdroplet emissions. Their insights may open new opportunities in nanoscale fabrication and electrospray ionization.
Professor Dan Daniel, head of the Droplet and Soft Matter Unit at the Okinawa Institute of Science and Technology (OIST) says, “From raindrops to spray coatings, mass spectrometry to microfluidics, sneezes to spacecraft plumes, charged droplets can show up in a surprising wealth of settings. Our observations enable new physical understanding of evaporating charged droplets, with a range of potential industrial applications.”
Sleep Documentary | Is Interstellar Travel Impossible?
We will achieve interstellar travel 300 years.
Relax as we explore the daunting question of whether humanity will ever journey beyond the stars. From the vast distances of space to the limits of technology, this soothing story unpacks the challenges (and the quiet hope) of interstellar travel.
Where are you watching from, and what time is it there? I’d love to hear in the comments—it’s always wonderful to see how far and wide this sleepy little community reaches.
If this helped you relax or stirred your sense of wonder, feel free to like the video and subscribe for more peaceful science stories to fall asleep to.
Wishing you a quiet night, wherever in the cosmos you may be.
World Science Festival
Does quantum mechanics actually imply that every possible outcome of every decision happens somewhere in an expansive reality? And if so, what does that mean for probability, free will, and our understanding of the universe itself?
Brian Greene sits down with David Deutsch, widely regarded as the father of quantum computing, to examine what many physicists are still reluctant to accept about their own theory. They explore why the many-worlds interpretation isn’t just a philosophical curiosity, what the wave function is really telling us about reality, and how decision theory may rescue probability in a fully deterministic multiverse. Deutsch also introduces constructor theory, his framework for rethinking the foundations of physics entirely and explains why the questions we’ve been trained not to ask might be the most important ones in all of science.
This program is part of the Rethinking Reality series, supported by the John Templeton Foundation.
Participant: David Deutsch.
Moderator: Brian Greene.
#worldsciencefestival #briangreene #cosmology #astrophysics.
ABOUT WORLD SCIENCE FESTIVAL:
The Science of PROJECT HAIL MARY
I talk about the science of Project Hail Mary and why it makes the story feel so grounded, exciting, and believable.
From microbes in space to the real challenges of long-duration space travel, this section looks at how the movie uses science as more than just background decoration. It also gets into why stories like this feel so refreshing right now, because they make curiosity, intelligence, and problem-solving feel dramatic again.
This is a conversation about the real science behind Project Hail Mary, what NASA’s work has to do with the movie, and why science fiction can still inspire wonder.
FULL EPISODE: • PROJECT HAIL MARY: Hope, Science, and Huma…
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Light-powered spaceships could get to our nearest star in 20 years. Fiction? Scientists say it could become fact
That would mean generations upon generations of human lifetimes, all lived out on board a rocket ship travelling across space, in the hope of a comfortable utopia waiting for us when we arrive.
Now, a team of researchers say they’ve demonstrated a form of light-driven propulsion that could one day get us to Alpha Centauri in 20 years.
A team of researchers at the J. Mike Walker ’66 Department of Mechanical Engineering at Texas A&M University say they’ve demonstrated lasers can be used to lift and steer objects without physical contact.
NASA Welcomes Jordan as 63rd Artemis Accords Signatory
The Hashemite Kingdom of Jordan signed the Artemis Accords Thursday during a ceremony hosted by NASA at the agency’s headquarters in Washington, becoming the latest nation to commit to responsible space exploration to benefit humanity.
“It is my privilege to welcome Jordan as the newest signatory to the Artemis Accords,” said NASA Administrator Jared Isaacman. “By signing the accords today, Jordan brings valuable perspective and capabilities that will help expand the Golden Age of exploration for all mankind. They join at a pivotal moment, as we take the accords principles and put them into practice with humanity’s return to the Moon. Through Artemis, we’re going back to the lunar surface, with contributions from our international partners, to build a Moon Base and to stay.”
Ambassador Dina Kawar of Jordan signed the accords on behalf of the country. U.S. Department of State Acting Principal Deputy Assistant Secretary for Oceans and International Environmental and Scientific Affairs Ruth Perry also participated in the ceremony.