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Ancient magnetic fields from the dawn of time might finally solve the "Hubble Tension."
The universe is expanding, but our measurements don't agree on how fast. Ancient magnetic fields from the dawn of time might finally solve the "Hubble Tension."
Cosmology is in crisis. When we measure the expansion of the universe using the Cosmic Microwave Background (CMB) (the afterglow of the Big Bang), we get one number: 67 km/s/Mpc.
Feb 161 min read


How bubbly geysers in the Utah desert are helping NASA prepare for the icy plumes of Europa and Enceladus.
How bubbly geysers in the Utah desert are helping NASA prepare for the icy plumes of Europa and Enceladus. In the arid landscape of Green River, Utah, cold water bubbles and sprays from the ground. These aren't powered by volcanic heat like Yellowstone's geysers. They are Cold-Water Geysers, driven by carbon dioxide saturation—essentially giant, natural soda bottles.
Feb 161 min read


The binary pulsar J1906+0746 is revealing the secrets of gravity.
Two compact objects locked in a 4-hour dance. A hidden planet. A glitch in the spin. The binary pulsar J1906+0746 is revealing the secrets of gravity.
PSR J1906+0746 is extreme. Discovered in 2004, it spins every 144 milliseconds and whips around its companion in just under 4 hours.
Feb 161 min read


Researchers have found a candidate millisecond pulsar near the supermassive black hole at our galaxy's center
Researchers have found a candidate millisecond pulsar near the supermassive black hole at our galaxy's center—a potential "cosmic clock" to test Einstein's theories.Deep in the chaotic center of the Milky Way lies Sagittarius A* (Sgr A*), a black hole 4 million times the mass of our sun. Finding a pulsar near this monster has been a holy grail for astronomers.
Feb 111 min read


A China-led space telescope has captured an intermediate-mass black hole tearing apart a white dwarf star.
A China-led space telescope has captured a rare cosmic meal: an intermediate-mass black hole tearing apart a white dwarf star.On July 2, 2025, the Einstein Probe (EP) detected a flash so bright it defied explanation. It wasn't a standard gamma-ray burst. The X-ray signal appeared before the explosion, flared to immense brightness, and then vanished in just 20 days.
Feb 111 min read


How did massive galaxies exist just after the Big Bang?
How did massive galaxies exist just after the Big Bang? New research reveals they didn't grow slowly—they exploded into existence. For two decades, astronomers have been puzzled by a timeline problem. Massive, "old" elliptical galaxies were found existing just 1.4 billion years after the Big Bang. According to standard models, they shouldn't have had time to grow that big.
Feb 111 min read


The James Webb Space Telescope has found galaxies that appear to be older than the universe itself.
The James Webb Space Telescope has found galaxies that appear to be older than the universe itself. Is the standard Big Bang model broken?
The standard model of cosmology (Lambda-CDM) says the universe is 13.8 billion years old. When we look deep into space, we look back in time. At high redshifts ($z$), the universe should be very young.
Feb 111 min read


How do massive gas giants form far from their stars?
How do massive gas giants form far from their stars? Astronomers used JWST to find a chemical fingerprint that points to a surprising answer.
The HR 8799 system is a giant version of our own solar system, with four massive planets orbiting far from their star. The smallest is five times heavier than Jupiter.
Feb 101 min read


A nearby orange dwarf star was known to host two worlds.
A nearby orange dwarf star was known to host two worlds. Now, precise measurements have revealed a massive third planet lurking further out.
HD 176986 is a K-type star (smaller and cooler than our Sun) located 91 light-years away. In 2018, astronomers found two hot super-Earths orbiting it.
Feb 91 min read


Venus is hiding a secret. Radar data has revealed a massive volcanic cave system
Venus is hiding a secret. Radar data has revealed a massive volcanic cave system lurking beneath the planet's thick, toxic atmosphere.
Volcanic activity isn't unique to Earth. We've seen lava tubes on Mars and the Moon. But finding them on Venus is a different challenge entirely. The planet is shrouded in thick sulfuric acid clouds that block visible light.
Feb 91 min read


Enceladus isn't just an icy moon. It's a planetary-scale generator, pumping energy and plasma waves more than 500,000 km
Enceladus isn't just an icy moon. It's a planetary-scale generator, pumping energy and plasma waves more than 500,000 km through the Saturnian system.
Famous for its water geysers, Enceladus has long been known to feed Saturn's E-ring. But a new study of 13 years of Cassini data reveals something much bigger: a vast "lattice" of magnetic waves connecting the moon to the planet.
Feb 91 min read


Samples from asteroid Bennu reveal that the building blocks of life didn't need warm water to form
Samples from asteroid Bennu reveal that the building blocks of life didn't need warm water to form—they could have been forged in the freezing, radioactive dark of the early solar system.
When NASA's OSIRIS-REx mission dropped a capsule containing dust from asteroid Bennu into the Utah desert, it delivered a time capsule from 4.6 billion years ago. Inside, scientists found amino acids—the molecules that make up proteins and DNA.
Feb 91 min read
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