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New observations of the red giant R Doradus reveal that our understanding is wrong
New observations of the red giant R Doradus reveal that our understanding of how stars spread the building blocks of life is wrong.
Red giant stars are the older, cooler cousins of our Sun. As they die, they act as cosmic engines, pumping out carbon, oxygen, and nitrogen via powerful stellar winds. These elements become the planets and lifeforms of the future.
Dec 23, 20251 min read


Supermassive black holes are notorious for gobbling up everything in sight
Supermassive black holes are notorious for gobbling up everything in sight. But new data from ALMA reveals they might actually have a very inconsistent appetite.
When two massive galaxies collide, gravity acts like a funnel, driving vast amounts of cold molecular gas toward the center. This should be an "all-you-can-eat buffet" for the supermassive black holes (SMBHs) residing there.
Dec 23, 20251 min read


SN 2022ngb, a supernova that challenges our standard models of stellar death
Astronomers have characterized SN 2022ngb, a "faint and slow" supernova that challenges our standard models of stellar death.
Type IIb supernovae come from stars that have lost most, but not all, of their hydrogen envelopes. This usually happens in binary systems where a companion star acts as a "parasite," stealing gas.
Dec 22, 20251 min read


How did life begin from dead rock?
How did life begin from dead rock? A new study reveals how volcanoes, asteroid impacts, and a surprising mineral ingredient cooked up the first RNA.
4.3 billion years ago, the Earth was bombarded by asteroids. While destructive, these impacts had a silver lining: they chemically "reduced" the atmosphere.
This process converted inert nitrogen and carbon dioxide into reactive gases. When these gases dissolved into surface water, they formed the basic sugars (ribose) needed fo
Dec 22, 20251 min read


Was Earth's formation a miraculous accident or a common cosmic event?
Was Earth's formation a miraculous accident or a common cosmic event? New research suggests supernovas "cook" planetary systems with cosmic rays, making rocky worlds abundant.
How do you dry out a wet planet? You heat it from the inside.
The supernova accelerates protons to relativistic speeds. These Cosmic Rays slam into the protoplanetary disk, triggering nuclear reactions that turn ordinary silicon and magnesium into radioactive Aluminum-26.
Dec 22, 20251 min read


Scientists are hunting for "Decaying Dark Matter" in the X-ray light of galaxy clusters.
Scientists are hunting for "Decaying Dark Matter" in the X-ray light of galaxy clusters. If found, a tiny spectral line could reveal the nature of 85% of the universe. We know neutrinos exist—ghostly particles that pass through Earth constantly. But standard "active" neutrinos are too light to be Dark Matter.
Dec 21, 20251 min read


ALMA is now fully equipped, allowing us to see the birth of stars and the chemistry of life like never before
ALMA is now fully equipped. New German-made amplifiers have unlocked "Band 2," allowing us to see the birth of stars and the chemistry of life like never before.
To hear the faint whispers of the universe, you need an amplifier that doesn't add its own noise.
Fraunhofer IAF developed new Low-Noise Amplifiers (LNAs) using Indium Gallium Arsenide (InGaAs). They operate at a chilling 22 Kelvin noise temperature—unmatched worldwide.
Dec 21, 20251 min read


Astronomers have looked back in time to chart exactly how our galaxy evolved
Using JWST, astronomers have looked back in time at 877 "Milky Way Twins" to chart exactly how our galaxy evolved from a chaotic youth to a majestic spiral.
By observing "twins" of the Milky Way at different distances (and thus different ages), the team reconstructed our galaxy's baby photo album.
The Discovery: Galaxies like ours build their dense central cores first. Only later does gas settle into the outer regions to form the wide, flat spiral disk we live in today.
Dec 21, 20251 min read


Data reanalysis suggests Saturn's largest moon isn't an open ocean world.
A decade of data reanalysis suggests Saturn's largest moon isn't an open ocean world. It's a viscous, icy mix of "Arctic sea ice" and aquifers.
Researchers revisited Cassini data and found something previous models missed: Energy Dissipation.
If Titan had a global ocean, it would flex easily. But the data shows massive energy loss as heat. This requires friction.
Dec 20, 20251 min read


NASA's IMAP spacecraft and its novel CoDICE instrument have an invisible magnetic bubble that protects us from the galaxy
NASA's IMAP spacecraft and its novel CoDICE instrument have begun their mission to chart the invisible magnetic bubble that protects us from the galaxy.
The Sun blows a constant "wind" of particles that inflates a bubble called the Heliosphere. This bubble protects us from high-energy galactic radiation.
Dec 19, 20251 min read


Astronomers using the Australian SKA Pathfinder have found a millisecond pulsar locked in a deadly dance with a companion star
Astronomers using the Australian SKA Pathfinder have found a millisecond pulsar locked in a deadly dance with a companion star, eclipsing its signal for nearly half its orbit.
Millisecond Pulsars (MSPs) are old neutron stars spun up by eating material from a companion. When they turn on, their intense radiation begins to blast their partner.
Dec 19, 20251 min read


A new "Interpretable AI" framework called CKAN is revealing the physical laws hidden inside galaxy clusters
Conventional AI is powerful but mysterious. A new "Interpretable AI" framework called CKAN is revealing the physical laws hidden inside galaxy clusters.
When galaxies collide, normal matter (gas) drags due to friction. Dark matter usually passes right through (ghostly).
However, if Dark Matter interacts with itself (Self-Interacting Dark Matter or SIDM), it should also experience drag. This would cause the Dark Matter halo to separate from the galaxies.
Dec 19, 20251 min read
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