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“Absolutely huge” 400-year-old black coral stuns scientists in New Zealand

A giant black coral estimated to be 300–400 years old has been discovered deep in Fiordland, New Zealand, astonishing researchers with its enormous size—about 4 meters tall and 4.5 meters wide. Scientists say it may be one of the largest black corals ever recorded in New Zealand

Admin Recifes 15/07/2026 2

A turquoise tint for the Black Sea caused by phytoplankton

The Black Sea sits at the boundary between Europe and Asia and connects to the Mediterranean Sea via a chain of waterways. Its surface often appears dark, but each spring and summer it transforms into a striking expanse of swirling turquoise. The OCI (Ocean Color Instrument) on N

Admin Recifes 15/07/2026 2

What are supermassive black holes? Everything you need to know about these mysterious obje

Nearly every massive galaxy observed hosts a supermassive black hole at its center. NASA's James Webb Space Telescope has discovered that some of these supermassive black holes may even be too big for the galaxy they're found in, challenging astronomers' understanding of these ob

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Einstein Probe may have caught a black hole tearing apart a white dwarf for the first time

Astronomers may have witnessed one of the rarest and most dramatic cosmic events ever seen: a long-sought intermediate-mass black hole ripping apart a dense white dwarf star and devouring it. The Einstein Probe space telescope caught the explosion in its earliest moments, reveali

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A single origin story for the Milky Way's most mysterious stars

Lurking at the heart of the Milky Way, Sagittarius A* (Sgr A*) is a supermassive black hole four million times the mass of the sun, surrounded by a puzzling collection of young, massive stars whose orbits have long defied explanation. Astronomers have proposed various competing t

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Off-center stellar death points to wandering supermassive black hole stripped of its own g

Astronomers have uncovered new details about the black hole that ripped apart a star in a tidal disruption event named AT2024tvd. Findings suggest it is a wandering supermassive black hole—the kind that is not located at the center of a visible galaxy. The paper outlining this re

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Reanalysis suggests 'Phoebe' is a variable star, not a primordial black hole

A new study debunks a recent claim that astronomers may have detected a lunar-mass primordial black hole. In a reanalysis of observations from the Dark Energy Camera (DECam), researchers found that the star nicknamed "Phoebe" was simply doing something ordinary that many stars do

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The solar gravitational lens could map white dwarfs and black holes

It feels like every few months we get to report on another academic paper singing the praises of the Solar Gravitational Lens (SGL). Partly, this is due to Dr. Slava Turyshev's astounding productivity in pumping out academic articles, but partly because such a groundbreaking miss

Admin Recifes 15/07/2026 2

Country diary: There’s no blackbird song like the one on my street | Josie George

Stoke-on-Trent, Staffordshire: With summer’s great silence coming, we must enjoy the birdsong while we can – as I have done with my local conifer croonerI have two summer earworms right now. The first is O Sole Mio, the jingle of our local ice-cream van, the second is a particula

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Cultural frameworks may contribute to racial differences in parole decisions

Parole candidates may be evaluated more favorably when they discuss their crimes using cultural frames more common among White Americans than among Black, Hispanic and East Asian Americans, according to a study.

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A cataclysmic collision in space provides new clues on astronomy's biggest stalemate

Second only to black holes, neutron stars—incredibly dense star remnants—are the densest objects in the universe. When neutron stars collide, they create ripples in the fabric of space and time that we can detect on Earth.

Admin Recifes 15/07/2026 2

Black locust deploys peptides to steer root bacteria into nitrogen fixation

Plants need nitrogen to grow. Many legumes meet this need through a symbiotic relationship: They harbor bacteria that fix atmospheric nitrogen and make it available to the plant. Until now, it was largely unclear how a perennial plant regulates this symbiosis without destroying i

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