A Galaxy Cluster's Wild Youth

By Evan Gough - May 15, 2026 05:24 PM UTC | Extragalactic
The galaxy cluster Abell 2029 is sometimes described as “the most relaxed cluster in the Universe.” This moniker does not arise from some sort of mellow vibe, but rather because of how calm and undisturbed the superheated gas that pervades the cluster appears to be. But new Chandra X-ray observations of the massive cluster highlight a major merger 4 billion years ago that still shape it today.
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Is Earth’s Constant Companion a Stray Asteroid or a Chunk of the Moon?

By Andy Tomaswick - May 15, 2026 04:02 PM UTC | Planetary Science
Earth has a group of cosmic stalkers. Known as “co-orbitals”, these small bits of rock have a 1:1 mean motion resonance with Earth. Basically, they take the exact same amount of time to orbit the Sun as we do. Astronomers have long believed these objects wandered in from the main asteroid belt between Mars and Jupiter, but recent spectral analysis suggests they better match the space-weathered lunar silicates that make up the Moon’s surface. As such, there has been an ongoing debate about whether these cosmic stalkers are actually visitors from the belt or blasted pieces of the Moon. A new study, published in Icarus, from researchers Elisa Alessi and Robert Jedicke provides strong hints that the belt is the more likely source - but pretty soon we’ll get a definitive answer from a spacecraft.
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Dark Matter May Have Left Its Fingerprint in a Gravitational Wave.

By Mark Thompson - May 15, 2026 07:03 AM UTC
Dark matter makes up roughly 85 percent of all the matter in the universe. We have never directly detected a single particle of it. But a new method developed by physicists at MIT and across Europe may have just opened a door we didn't know existed. When two black holes collide and merge, they send ripples through the fabric of spacetime, these are known as gravitational waves and if those black holes happened to spiral through a dense cloud of dark matter on their way in, those waves carry an imprint of it. For the first time, scientists have a technique to read that imprint and one signal in the existing data is already raising eyebrows.
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Artemis III: The Mission That Has to Work Before Humans Can Return to the Moon.

By Mark Thompson - May 15, 2026 06:56 AM UTC
Artemis II has barely left the headlines. On April 1st 2026, four astronauts climbed aboard NASA's Orion spacecraft, rode the most powerful rocket ever to carry humans beyond low Earth orbit, and swung around the far side of the Moon. The world watched. Now, before the dust has settled, NASA has outlined its plans for what comes next. Artemis III won't be landing on the Moon. But what it will do is arguably just as important and if history is any guide, it's exactly the kind of mission that makes the difference between a Moon landing and a disaster.
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It's Raining Stardust. It Has Been for Thousands of Years.

By Mark Thompson - May 15, 2026 06:50 AM UTC | Stars
Right now, as you read this, Earth is drifting through a cloud of debris from an ancient stellar explosion. Stardust, real stardust, is raining down on us so thinly scattered that we have only just found the proof. Locked inside Antarctic ice cores up to 80,000 years old, an international team led by the Helmholtz-Zentrum Dresden-Rossendorf has discovered traces of iron-60, a radioactive isotope that can only be created in the heart of an exploding star.
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We've Been Listening for Ten Years. Here's What We Heard

By Mark Thompson - May 14, 2026 10:49 PM UTC | Astrobiology
For ten years, astronomers at UCLA have been pointing one of the world's most powerful radio telescopes at the stars and listening. Not for pulsars or gas clouds, or the hiss of the cosmic microwave background, but for something far more extraordinary. A signal from another civilisation. The result of a decade's work, 70,000 stars, and 100 million candidate signals is now in and every single one of them was us! But far from being a disappointment, the findings are among the most rigorous and revealing in the history of the search for extraterrestrial intelligence.
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The Roman Space Telescope is Ahead of Schedule, and the Hubble is Giving it a Jump Start

By Evan Gough - May 14, 2026 05:28 PM UTC | Telescopes
One of the core community surveys of NASA’s Nancy Grace Roman Space Telescope, the Galactic Bulge Time-Domain Survey, is expected to locate over a thousand exoplanets that orbit far away from their stars, beyond the orbital distance of Earth from the Sun. Although Roman hasn’t launched yet, astronomers already are gathering useful supporting data by utilizing NASA's Hubble Space Telescope, which could assist astronomers in analyzing Roman data.
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The Universe's Biggest Black Holes Aren't Born, They're Built

By Mark Thompson - May 14, 2026 11:04 AM UTC | Black Holes
When a massive star dies, it can leave behind a black hole. That much has been understood for decades. But the most monstrous black holes in the universe, the heavyweights detected by the faint ripples they send through the fabric of space and time aren't born that way at all. According to a new Cardiff University study, they're built through repeated, catastrophic collisions in the most densely packed star clusters in the cosmos.
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The Planet That Shouldn't Exist… But Does

By Mark Thompson - May 14, 2026 10:56 AM UTC
Hot Jupiters are the bullies of the planetary world. These colossal gas giants orbit impossibly close to their stars and their gravity is so overwhelming that anything nearby gets scattered, swallowed, or flung into oblivion. Finding a smaller planet surviving inside a hot Jupiter's orbit should be virtually impossible. Yet 190 light years away, that's exactly what astronomers have found.
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We've Been Wasting 99% of Our Supernova Data

By Mark Thompson - May 14, 2026 10:48 AM UTC | Stars
Every time an astronomer points a telescope at a distant supernova, they're trying to measure how far away it is. But the light from these stellar explosions arrives tangled up with interference from dust, the age of the host galaxy and the chemical make up of the original star . Unpicking it all has always been a painstaking business. Now a team of researchers has used artificial intelligence to cut through the noise in a single step, potentially making cosmological measurements four times more precise. In a universe full of unanswered questions, that's a very significant leap forward.
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Forget Searching for Individual Biosignatures. Instead, Find Their Patterns

By Evan Gough - May 13, 2026 08:06 PM UTC | Astrobiology
The search for life elsewhere focuses on biosignatures. These are chemicals in atmospheres that can only be attributed to life. But despite the prowess of the JWST, finding slam-dunk proof of life on other worlds is a confounding exercise. New research suggests that rather than focus on individual chemicals, we should look for statistical patterns.
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